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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5033. Отображено 198.
10-11-2009 дата публикации

СПОСОБЫ ПОЛУЧЕНИЯ НЕОЧИЩЕННОГО ПРОДУКТА

Номер: RU2372381C2

Изобретение относится к способу получения неочищенного сырья. При контактировании неочищенного сырья с одним или несколькими катализаторами получают суммарный продукт, который включает неочищенный продукт. Неочищенное сырье имеет содержание остатка, по меньшей мере, 0,2 грамма остатка на 1 грамм неочищенного сырья. Неочищенный продукт представляет собой жидкую смесь при 25°С и 0,101 МПа. Одно или несколько свойств этого неочищенного продукта можно изменить, по меньшей мере, на 10% относительно соответствующих свойств неочищенного сырья. В некоторых вариантах изобретения в результате контактирования неочищенного сырья с одним или несколькими катализаторами получают газ. Данные способы позволяют получать неочищенное сырье с улучшенными характеристиками. Изобретение также относится к неочищенному продукту или смеси и способу получения транспортного топлива. 5 н. и 17 з.п. ф-лы, 4 табл., 12 ил.

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03-08-2022 дата публикации

Катализатор для получения водорода и двухатомной газообразной серы в процессе разложения сероводорода

Номер: RU2777440C2

Изобретение относится к области химии, а именно к способам разложения (утилизации) сероводорода с целью получения водорода и элементной серы. Описан способ низкотемпературного разложения сероводорода для получения водорода и газообразной двухатомной серы в присутствии катализатора на основе переходных металлов или их сплавов, сульфидных систем переходных металлов, массивных и нанесенных на различные носители, выбранных из: (Fe,Ni,Cr,Ti)/SiO2,(Cu,Мо)/Сибунит, (Fe,Ni,Cr,P)/Al2O3, CuZnSx, сплав Cu+Sn, (Fe,Ni,Zn,B)/Сибунит, (Со,Мо,S,Cd)/Сибунит. Для стабилизации активного компонента в катализатор вводят легирующие добавки некаталитических металлов и/или неметаллов. Процесс разложения сероводорода проводят при температуре ниже 100°С. 7 пр.

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14-05-2020 дата публикации

Номер: RU2018136795A3
Автор:
Принадлежит:

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05-11-2018 дата публикации

Номер: RU2017115226A3
Автор:
Принадлежит:

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24-11-2023 дата публикации

Способ получения фотокатализатора на основе высокопористого наноструктурированного монолитного оксида алюминия, инкрустированного неагломерированными квантовыми точками, и способ синтеза квантовых точек Zn0,5Cd0,5S

Номер: RU2808200C1

Изобретение относится к химической промышленности, медицине, охране окружающей среды и может быть использовано при изготовлении фотокатализаторов для разложения токсичных органических веществ, загрязняющих воду и воздух. Сначала при 130°С готовят смесь прекурсоров Zn и Cd из их ацетатов в присутствии олеиновой кислоты в органическом растворителе. Отдельно при 135°С готовят раствор серы в органическом растворителе в инертной атмосфере. При приготовлении указанных растворов в качестве органического растворителя используют дибензиловый эфир. Затем к смеси прекурсоров Zn и Cd в инертной атмосфере при 280°С последовательно добавляют олеиламин и полученный раствор серы, перемешивают при 260°С, охлаждают, добавляют этанол для образования осадка, который переосаждают и диспергируют в циклогексане. После этого к дисперсии добавляют раствор NiCl2 в этаноле, продувают аргоном и освещают кварцевой лампой при перемешивании. Полученные квантовые точки Zn0,5Cd0,5S, допированные 10 мас.% никеля, осаждают ...

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28-01-2021 дата публикации

КАТАЛИТИЧЕСКИ АКТИВНЫЕ ВЕЩЕСТВА

Номер: RU2741805C1
Принадлежит: ИЛЛЮМИНА, ИНК. (US)

Изобретение может быть использовано при секвенировании генома. Предложено каталитически активное вещество, содержащее минеральную частицу сульфида меди(I) и молекулу, функционализированную алкином, непосредственно связанную с поверхностью минеральной частицы сульфида меди(I). Способ получения триазола включает проведение реакции молекулы, функционализированной алкином, с молекулой, функционализированной азидом, в присутствии минерала на основе сульфида меди(I). Предложены также смесь для прививки праймера к поверхности проточной ячейки и способ прививки праймера к поверхности проточной ячейки. Изобретение позволяет упростить получение триазола за счет исключения координации соединений меди со стабилизирующим лигандом и восстановления Cu2+, исключения применения дополнительных реактивов. 4 н. и 11 з.п. ф-лы, 6 ил., 1 табл., 3 пр.

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27-01-2008 дата публикации

СПОСОБЫ ПОЛУЧЕНИЯ НЕОЧИЩЕННОГО ПРОДУКТА И ВОДОРОДСОДЕРЖАЩЕГО ГАЗА

Номер: RU2006126086A
Принадлежит:

... 1. Способ получения газообразного водорода, в котором неочищенное сырье контактирует с одним или несколькими углеводородами в присутствии неорганического солевого катализатора и водой, причем число атомов углерода в углеводороде находится в диапазоне от 1 до 6, неочищенное сырье имеет содержание остатка, по меньшей мере, 0,2 г остатка на 1 г неочищенного сырья, и для неорганического солевого катализатора наблюдается точка перегиба при выделении газа в температурном диапазоне между 50 и 500°С, что определяется по методу Временного анализа продуктов (ВАП), и получают газообразный водород. 2. Способ по п.1, в котором углеводород, имеющий один или несколько атомов углерода в диапазоне от 1 до 6, включает в себя метан, этан, пропан, бутан, нафту или их смеси. 3. Способ по п.1 или 2, в котором вода представляет собой водяной пар. 4. Способ получения газового потока, в котором неочищенное сырье контактирует с неорганическим солевым катализатором в присутствии водяного пара, в котором неочищенное ...

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10-02-2008 дата публикации

СПОСОБ ПОЛУЧЕНИЯ НЕОЧИЩЕННОГО ПРОДУКТА

Номер: RU2006126085A
Принадлежит:

... 1. Способ получения неочищенного продукта, в котором вводят в контакт неочищенное сырье с источником водорода в присутствии неорганического солевого катализатора, чтобы получить суммарный продукт, который включает неочищенный продукт, при этом неочищенный продукт представляет собой жидкую смесь при 25°С и 0,101 МПа, неочищенное сырье имеет содержание остатка, по меньшей мере, 0,2 г остатка на 1 г неочищенного сырья; неорганический солевой катализатор содержит одну или несколько солей щелочных металлов, одну или несколько солей щелочно-земельных металлов или их смеси, в котором одна из солей щелочного металла представляет собой карбонат щелочного металла, где щелочной металл имеет атомный номер, по меньшей мере, 11; и регулируют условия контактирования: температуру, давление, скорость потока неочищенного сырья, потока суммарного продукта, время пребывания, скорость потока источника водорода или их сочетаний, чтобы получить суммарный продукт, который имеет содержание остатка, по большей мере ...

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10-02-2008 дата публикации

СПОСОБ ПОЛУЧЕНИЯ НЕОЧИЩЕННОГО ПРОДУКТА

Номер: RU2006126091A
Принадлежит:

... 1. Способ получения неочищенного продукта, образующегося в процессе нефтедобычи, вводят в контакт неочищенное сырье с источником водорода в присутствии неорганического солевого катализатора с получением суммарного продукта, который включает в себя неочищенный продукт, который представляет собой жидкую смесь при 25°С и 0,101 МПа, причем неочищенное сырье имеет содержание остатка, по меньшей мере, 0,2 г остатка на 1 г неочищенного сырья; неорганический солевой катализатор содержит, по меньшей мере, две неорганические соли металла, неорганический солевой катализатор содержит на 1 г неорганического солевого катализатора от 0 до 0,1 г композиций, которые образуют стекла при температурах, по меньшей мере 350°С, и для неорганического солевого катализатора наблюдается точка перегиба при выделении газа в диапазоне температур, который определяется по методу Временного анализа продуктов (ВАП), где точка перегиба при выделении газа находится в диапазоне температур между а) температурой дифференциальной ...

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14-11-1974 дата публикации

Номер: DE0001543731B2
Принадлежит: LEONARD, JACKSON D., NEW YORK (V.ST.A.)

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29-11-2007 дата публикации

Verfahren zur Herstellung von Chlor durch Gasphasenoxidation

Номер: DE102006024546A1
Принадлежит:

Die Erfindung betrifft ein Verfahren zur Herstellung von Chlor durch katalytische Gasphasenoxidation von Chlorwasserstoff mit Sauerstoff, worin der Katalysator mindestens eine Trägersubstanz und mindestens ein Katalysator-Metallsulfid umfasst, sowie neue Katalysatoren, die mindestens eine Trägersubstanz und mindestens ein Katalysator-Metallsulfid umfassen.

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04-07-2012 дата публикации

Water-gas shift catalyst

Номер: GB0201208988D0
Автор:
Принадлежит:

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31-12-2002 дата публикации

Production of formaldehyde using carbon oxides hydrogen and H 2 S

Номер: GB0002347929B
Принадлежит: UNIV LEHIGH, * LEHIGH UNIVERSITY

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12-12-2012 дата публикации

A water-gas shift catalyst

Номер: GB0002491698A
Принадлежит:

A catalyst precursor for preparing a catalyst suitable for use in a sour water-gas shift process comprises 5 to 30% by weight of a catalytically active metal oxide selected from tungsten oxide and molybdenum oxide; 1 to 10% by weight of a promoter metal oxide selected from cobalt oxide and nickel oxide; and 1 to 15% by weight of an oxide of an alkali metal selected from sodium, potassium and caesium; supported on a titania catalyst support. The precursor can be sulphided with hydrogen sulphide. The catalyst can be used in a water-gas shift process comprising contacting synthesis gas comprising hydrogen, steam, carbon monoxide and carbon dioxide including one or more sulphur compounds, and wherein the steam to carbon monoxide molar ratio in the synthesis gas is in the range 0.5 to 1.8:1.

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15-07-1966 дата публикации

Method of preparation of mercaptans.

Номер: OA0000000609A
Принадлежит:

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15-06-1980 дата публикации

VERFAHREN ZUR HERSTELLUNG VON 1,4-DICYANOBUTEN DURCH DIMERISIERUNG VON ACRYLNITRIL

Номер: ATA851877A
Автор:
Принадлежит:

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15-05-2011 дата публикации

SYNTHESIS OF PRECIOUS METAL SULFIDE CATALYSTS IN A SULFIDE-ION-FREE AQUEOUS ENVIRONMENT

Номер: AT0000507001T
Принадлежит:

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15-12-1995 дата публикации

PRODUCTION OF A HYDRAULIC TREATMENT CATALYST.

Номер: AT0000130358T
Принадлежит:

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06-12-1990 дата публикации

MIXED BASIC METAL SULFIDE CATALYST

Номер: AU0005594390A
Автор: NAME NOT GIVEN
Принадлежит:

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30-01-2001 дата публикации

Metal catalysts complexed with sulfone or sulfoxide compounds

Номер: AU0005922300A
Принадлежит:

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12-02-2009 дата публикации

Systems and methods of producing a crude product

Номер: AU2004309348B2
Принадлежит:

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09-12-2004 дата публикации

Catalyst for oxygen reduction

Номер: AU2004243570A1
Принадлежит:

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12-02-2009 дата публикации

Porous bodies and methods

Номер: AU2008284107A1
Принадлежит:

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23-10-1986 дата публикации

CATALYSTS FOR PHOTO-ASSISTED OXIDATION-REDUCTION REACTIONS

Номер: AU0000556121B2
Принадлежит:

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29-04-2021 дата публикации

Development of solar driven photocatalyst and its application in degradation of organic pollutants

Номер: AU2021100320A4
Принадлежит:

Development of solar driven photocatalyst and its application in degradation of organic pollutants Abstract In this project, core-shell CdS@SnO2 particles have been prepared by Successive Ion Layer Adsorption and Reaction (SILAR) method. CdS is a well known low band gap semiconductor (of band gap ~ 2.4eV) and can thus harvest visible light of wavelength up to 520nm of the solar radiation. In our present work, we have implemented SILAR method with slight modification to coat thin CdS layer over fine SnO 2 particles to obtain core-shell CdS@SnO 2 particles. The SILAR method, which is usually used for the deposition of binary semiconducting thin films, has some advantage over other preparative methods, for example, this is a facile, less expensive and less time consuming technique, and it provides the provision to control the thickness of the film by adjusting the number of cycle of coating. In the present synthetic approach, fine SnO 2 powder has been prepared by hydrothermal method initially ...

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28-02-1989 дата публикации

PROCEDE DE FABRICATION DE METHYLMERCAPTAN A PARTIR DES OXYDES DE CARBONE

Номер: CA0001250596A1
Принадлежит:

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23-07-2013 дата публикации

SYSTEMS AND METHODS OF PRODUCING A CRUDE PRODUCT

Номер: CA0002549405C

... ²²²Contact of a crude feed with one or more catalysts produces a total product ²that includes a crude product. The crude feed has a residue content of at ²least 0.2 grams of residue per gram of crude feed. The crude product is a ²liquid mixture at 25 ~C and 0.101 MPa. One or more properties of the crude ²product may be changed by at least 10 % relative to the respective properties ²of the crude feed. In some embodiments, gas is produced during contact with ²one or more catalysts and the crude feed.² ...

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09-01-1996 дата публикации

CATALYTIC REMOVAL OF SULPHUR-CONTAINING COMPOUNDS FROM FLUID STREAMS BY DECOMPOSITION

Номер: CA0001337905C
Принадлежит: BUDRA RES LTD, BUDRA RESEARCH LTD.

This invention provides a catalyst and method for removing sulphur compounds from a fluid stream and decomposing such compounds to produce sulphur. Sour natural gas can be sweetened effectivey by this invention, and sulfur can be prepared thereby. The invention employs a catalyst containing an alkali metal sulfide and sulfides(s) or selenide(s) of metal(s) showing polyvalent and/or amphoteric character, e.g. Zn, etc. The catalyst is generally impregnated on a microporous type support (e.g., alumina) and is capable of providing reactive oxygen. Its activity is sustained by exposure to small amounts of oxygen either while decomposing the sulphur compound, or thereafter.

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20-10-1981 дата публикации

PROCESS FOR PREPARING THIOPHENOLS

Номер: CA0001111072A1
Принадлежит:

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15-07-2014 дата публикации

VANADIUM-FREE CATALYST FOR SELECTIVE CATALYTIC REDUCTION AND METHOD OF PRODUCTION THEREOF

Номер: CA0002666550C
Принадлежит: UMICORE AG & CO. KG, UMICORE AG & CO KG

Selective catalytic reduction with ammonia or a compound which can be decomposed to give ammonia is a known process for removing nitrogen oxides from the exhaust gas of predominantly lean-burn internal combustion engines. Most of the vanadium-containing SCR catalysts used for this purpose to date are notable for a good conversion profile. However, the volatility of vanadium oxide at relatively high exhaust gas temperatures can lead to the emission of toxic vanadium compounds. Zeolite-based SCR catalysts, which are used especially in batchwise SCR systems, are a very costly solution to the problem. A process is presented, with which a homogeneous cerium-zirconium mixed oxide is activated for the SCR reaction by introducing sulfur and/or transition metal in a defined manner. The use of this process provides a highly active, ageing-stable SCR catalyst which constitutes a vanadium-free, inexpensive and high-performance alternative to the SCR catalysts to date and is suitable especially for ...

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12-03-2013 дата публикации

HYDROMETALLURGICAL PROCESS FOR PRODUCTION OF SUPPORTED CATALYSTS

Номер: CA0002486354C
Принадлежит: SULZER METCO (CANADA) INC.

... ²²²A process for the production of a supported catalyst. The process comprises ²heating a slurry that comprises a catalyst support and at least one active ²catalytic ingredient precursor. Gas is introduced to the slurry at a ²sufficient pressure to reduce the at least one active catalytic ingredient ²precursor and deposit at least one active catalytic ingredient onto a surface ²of the catalyst support to form the supported catalyst. The supported catalyst ²has a large active catalytic surface area.² ...

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14-11-1992 дата публикации

CATALYST AND PROCESS FOR REMOVAL OF SULPHUR COMPOUNDS AND OXIDES FROM FLUID STREAMS

Номер: CA0002087265A1
Принадлежит:

... 2087265 9220621 PCTABS00017 The invention comprises a regeneratable catalyst that is capable of providing a reactive oxygen to partially oxidize sulphur-containing compounds to produce sulphur. It includes a method for removing sulphur compounds including both sulphur oxides and hydrogen sulphide from a fluid stream and decomposing such compounds to produce sulphur. Sour natural gas can be sweetened effectively by this invention, and sulphur can be prepared thereby. The catalyst is preferably formed by impregnating alkali metal sulfide and sulfide(s) or selenide(s) of metal(s) showing polyvalent and/or amphoteric character, e.g. Zn, etc. on a microporous type support (e.g., alumina). Its activity is sustained by exposure to a source of oxygen, such as air, oxygen sulphur dioxide or nitrogen peroxide and the like. A method is also described by which sulphur dioxide may be absorbed from flue gas and converted to sulphur, while higher oxides of nitrogen and carbon dioxide are being absorbed ...

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08-07-1999 дата публикации

PRODUCTION OF FORMALDEHYDE USING CARBON OXIDES, HYDROGEN AND H2S

Номер: CA0002316810A1
Принадлежит:

A method wherein a gas stream containing hydrogen, a carbon oxide and hydrogen sulfide is first passed in contact with a catalyst comprising a porous alumina supported sulfided metal selected from the group consisting of molybdenum (Mo), chromium (Cr), tungsten (W), manganese (Mn), nickel (Ni), iron (Fe), zinc (Zn), cobalt (Co), copper (Cu), tin (Sn), vanadium (Va) and mixtures thereof, optionally promoted by an alkali metal sulfide, to convert said hydrogen, carbon oxide and hydrogen sulfide to methyl mercaptans, (primarily methanethiol (CH3SH)), and the gas stream containing the methyl mercaptans are passed in contact with a catalyst comprising a supported metal oxide or a bulk metal oxide in the presence of an oxidizing agent and for a time sufficient to convert at least a portion of the methyl mercaptan to formaldehyde (CH2O), and sulfur dioxide (SO2).

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15-12-1976 дата публикации

Номер: CH0000582620A5
Автор:
Принадлежит: SIEMENS AG

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28-04-1978 дата публикации

Номер: CH0000598189A5
Принадлежит: BAYER AG

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29-12-1967 дата публикации

Номер: CH0001336363A4
Автор:
Принадлежит:

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24-04-2000 дата публикации

METHOD AND CATALYST FOR DIRECT OXIDATION OF HYDROGEN SULFIDE TO SULFUR, CONTAINED IN GAS

Номер: EA0199900783A1
Автор:
Принадлежит:

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30-12-2009 дата публикации

СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРА ПЕРЕХОДНОГО МЕТАЛЛА И ПРИМЕНЕНИЕ КАТАЛИЗАТОРА В СПОСОБЕ ПОЛУЧЕНИЯ НЕОЧИЩЕННОГО ПРОДУКТА

Номер: EA0000012632B1

Изобретение относится к способу получения катализатора, представляющего собой сульфид переходного металла. Данный катализатор применяют для получения неочищенного продукта из неочищенного сырья. Неочищенное сырье имеет содержание остатка по меньшей мере 0,2 г остатка на 1 г неочищенного сырья. Неочищенный продукт представляет собой жидкую смесь при 25°С и 0,101 МПа. Одну или несколько характеристик этого неочищенного продукта можно изменять по меньшей мере на 10% относительно соответствующих характеристик неочищенного сырья.

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28-09-2018 дата публикации

MODERNIZED REACTOR OF A BOILING LAYER WITH SLIGHT POLLUTION OF SEDIMENT

Номер: EA0201890416A2
Автор:
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27-10-2006 дата публикации

СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРА, КАТАЛИЗАТОР, СПОСОБ ПОЛУЧЕНИЯ НЕОЧИЩЕННОГО ПРОДУКТА И НЕОЧИЩЕННЫЙ ПРОДУКТ

Номер: EA200601185A1
Принадлежит:

При контакте неочищенного сырья с одним или несколькими катализаторами получают суммарный продукт, который включает в себя неочищенный продукт. Неочищенное сырье имеет содержание остатка по меньшей мере 0,2 г на 1 г неочищенного сырья. Неочищенный продукт представляет собой жидкую смесь при 25°С и 0,101 МПа. Одну или несколько характеристик этого неочищенного продукта можно изменять по меньшей мере на 10% относительно соответствующих характеристик неочищенного сырья. В некоторых вариантах осуществления изобретения получают газ в результате контактирования неочищенного сырья с одним или несколькими катализаторами.

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27-10-2006 дата публикации

СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРА, КАТАЛИЗАТОР, СПОСОБ ПОЛУЧЕНИЯ НЕОЧИЩЕННОГО ПРОДУКТА И НЕОЧИЩЕННЫЙ ПРОДУКТ

Номер: EA0200601183A1
Принадлежит:

При контакте неочищенного сырья с одним или несколькими катализаторами получают суммарный продукт, который включает в себя неочищенный продукт. Неочищенное сырье имеет содержание меньшей мере 0,2 г остатка на 1 г неочищенного сырья. Неочищенный продукт представляет собой жидкую смесь при 25°С и 0,101 МПа. Одну или несколько характеристик этого неочищенного продукта можно изменять по меньшей мере на 10% относительно соответствующих характеристик неочищенного сырья. В некоторых вариантах осуществления изобретения получают газ в результате контактирования неочищенного сырья с одним или несколькими катализаторами.

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29-08-2008 дата публикации

НЕОЧИЩЕННЫЙ ПРОДУКТ ПРОЦЕССОВ НЕФТЕДОБЫЧИ И СПОСОБ ЕГО ПЕРЕРАБОТКИ

Номер: EA0000010396B1

При контакте неочищенного сырья с одним или несколькими катализаторами получают суммарный продукт, который включает в себя неочищенный продукт. Неочищенное сырье имеет содержание остатка по меньшей мере 0,2 г остатка на 1 г неочищенного сырья. Неочищенный продукт представляет собой жидкую смесь при 25°С и 0,101 МПа. Одну или несколько характеристик этого неочищенного продукта можно изменять по меньшей мере на 10% относительно соответствующих характеристик неочищенного сырья. В некоторых вариантах осуществления изобретения получают газ в результате контактирования неочищенного сырья с одним или несколькими катализаторами.

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26-10-2007 дата публикации

СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРА, КАТАЛИЗАТОР, СПОСОБ ПОЛУЧЕНИЯ НЕОЧИЩЕННОГО ПРОДУКТА И НЕОЧИЩЕННЫЙ ПРОДУКТ

Номер: EA0000009091B1

При контакте неочищенного сырья с одним или несколькими катализаторами получают суммарный продукт, который включает в себя неочищенный продукт. Неочищенное сырье имеет содержание остатка по меньшей мере 0,2 г остатка на 1 г неочищенного сырья. Неочищенный продукт представляет собой жидкую смесь при 25°С и 0,101 МПа. Одну или несколько характеристик этого неочищенного продукта можно изменять по меньшей мере на 10% относительно соответствующих характеристик неочищенного сырья. В некоторых вариантах осуществления изобретения получают газ в результате контактирования неочищенного сырья с одним или несколькими катализаторами.

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23-11-2018 дата публикации

Preparation of chalcogenide semiconductor CdX compounded H-TiO2 based nanotube array

Номер: CN0108855246A
Автор: LIU SHIKAI, ZHOU SHUHUI
Принадлежит:

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01-08-2017 дата публикации

Improved air purification system and method for removing formaldehyde

Номер: CN0106999847A
Автор: ZHANG YILING
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11-12-1981 дата публикации

METHOD OF PREPARATION OF CARBONYL SULPHIDE

Номер: FR0002349538B1
Автор:
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15-12-1978 дата публикации

NOUVEAUX CHALCOGENURES ET LEUR PROCEDE DE PREPARATION

Номер: FR0002391155A
Автор:
Принадлежит:

L'invention concerne des chalcogénures dont le diamètre des particules est inférieur à 0,1 micron et dont les cristallites ont des dimensions d'environ 50 Angström x 100 Angström ou moins. Ces chalcogénures répondent à la formule MXy dans laquelle M est le ruthénium, le rhodium, l'iridium Ou l'osmium, X est un chalcogénure choisi entre le soufre, le sélénium, le tellure et leurs mélanges et y est un nombre allant d'environ 0,1 à environ 3, ou bien M est le technétium, le rhénium ou le manganèse et y est un nombre d'environ 1,5 à environ 4. Les chalcogénures de l'invention ont la propriété de catalyser des réactions d'hydrodésulfuration, d'hydrogénation et d'hydrodénitration.

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12-03-1958 дата публикации

Process for obtaining sulphur starting from gas containing of the hydrogen sulphide

Номер: FR0001153511A
Автор:
Принадлежит:

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06-05-1966 дата публикации

Process for the purification of gases contaminated by mercury

Номер: FR0001450243A
Автор:
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08-02-1985 дата публикации

Finely divided sulphur tolerant chalcogenide catalysts - prepd. without an aq. solvent from the metal chloride and a metal sulphide

Номер: FR0002391155B1
Автор:
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02-07-1999 дата публикации

CATALYTIC PROCESS TO OXIDIZE DIRECTLY OUT OF SULPHUR, At low temperature, the H2S CONTAINED IN WEAK CONCENTRATION IN a GAS AND CATALYST FOR SA IMPLEMENTED

Номер: FR0002773085A1
Принадлежит:

L'H2S du gaz à traiter est oxydé en soufre au contact d'un catalyseur d'oxydation renfermant au moins un oxysulfure d'un métal choisi parmi Ni, Fe, Co, Cu, Cr, Mo et W, associé à un support en carbure de silicium, en opérant à des températures inférieures au point de rosée du soufre formé et plus particulièrement comprises entre 30°C et 70°C. Application à l'élimination de l'H2S contenu dans des gaz d'origines diverses avec récupération de cet H2S essentiellement sous la forme de soufre.

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27-12-1974 дата публикации

ELECTRODES HAVING CATALYTIC ACTIVITY

Номер: FR0002232093A1
Автор:
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17-10-2017 дата публикации

HYDROGEN GENERATION CATALYST AND MANUFACTURING METHOD THEREOF

Номер: KR101785868B1

Disclosed are a hydrogen generation catalyst and a manufacturing method thereof. According to an embodiment of the present invention, a hydrogen generation catalyst comprises a conductive fabric in which a metal film is covered on the surface of polymer textile, and a transition metal-chalcogen compound thin film formed on the conductive fabric, thereby having excellent catalytic properties such as low initiation potential, small Tafel slope, high current exchange density, high stability, etc. through a bond with the transition metal-chalcogen compound and the conductive fabric. COPYRIGHT KIPO 2017 (AA) Start (BB) End (S110) Step of fabricating a conductive fabric by coating a polymer film with a metal film (S120) Step of forming a thin film of a transition metal chalcogenide compound using a chalcogenide compound precursor and a transition metal precursor on the conductive fabric ...

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06-04-2018 дата публикации

CATALYST, MANUFACTURING METHOD OF CATALYST, AND MANUFACTURING METHOD OF 2,5-DIMETHYLFURAN USING CATALYST

Номер: KR101846783B1

The present invention relates to a catalyst, a manufacturing method of the catalyst, and a manufacturing method of 2,5-dimethylfuran using the catalyst, wherein the catalyst of the present invention contains sulfonated graphene oxide, a metal organic framework (MOF) compound disposed on the surface of the sulfonated graphene oxide and containing a first metal, and a second metal supported on the metal organic framework compound. According to the present invention catalysts containing various functional sites can be provided. COPYRIGHT KIPO 2018 ...

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18-09-2017 дата публикации

METHOD FOR PRODUCING AEROGEL BLANKET, AND AEROGEL BLANKET PRODUCED THEREBY

Номер: KR1020170104914A
Принадлежит:

The present invention relates to a method for producing an aerogel blanket ensuring excellent hydrophobicity at a high temperature, and an aerogel blanket produced thereby. According to the present invention, the production method involves the use of a precursor obtained by mixing silica sol and hydrophobic aerogel powder together, thereby enabling production of superhydrophobic aerogel blankets in which hydrophobization is achieved even in an internal structure. The aerogel blanket produced by the production method of the present invention also ensures high hydrophobicity since a surface and the internal structure are all hydrophobized, while retaining hydrophobicity upon high temperature application. COPYRIGHT KIPO 2017 (AA) 550°C 1 hour heat-treatment (BB) Example 1 (CC) Example 2 ...

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01-08-2012 дата публикации

Precipitated film and fabricating method thereof

Номер: TW0201231296A
Принадлежит:

A precipitated film and the fabricating method thereof are disclosed. The precipitated film includes a supporting layer and a functional layer. The supporting layer is composed of columnar crystals and the functional layer is formed on the supporting layer and composed of granular crystals. The precipitated film is fabricated by a precipitating reaction that infusing a second aqueous solution on a first aqueous solution which was phase changed into solid-state.

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02-09-2010 дата публикации

PROCESS FOR THE PREPARATION OF HYBRID ZEOLITE OR ZEOLITE-LIKE MATERIALS

Номер: WO2010097224A2
Принадлежит:

A process for the preparation of hybrid zeolite or zeolite-like materials comprising the steps of : - providing a solution or suspension or solid material containing nanoparticles comprising at least one metal, - providing a synthesis gel or a synthesis gel precursor of a zeolite or zeolite-like material, - mixing the synthesis gel or the synthesis gel precursor of the zeolite or zeolite-like material with the solution or suspension or solid material containing nanoparticles comprising at least one metal, to form a mixture, - converting the mixture under zeolite or zeolite-like synthesis conditions to hybrid zeolite or zeolite-material encapsulating nanoparticles comprising at least one metal.

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03-11-2011 дата публикации

PHOTOCATALYST FILTER UNIT AND AIR PURIFYING DEVICE

Номер: WO2011135686A1
Автор: TOKUOKA, Fumio, OTA, Kanji
Принадлежит:

Disclosed is a photocatalyst filter unit that does not crack and does not generate dust from the constituent material in the photocatalyst filter when the photocatalyst filter is subjected to shock. A cushion material (32) is attached to the periphery of the side surface (6S) of the photocatalyst filter (6), but not to the front surface (6A) or the rear surface (6B) of the plate-shaped photocatalyst filter (6). A frame member (31) houses the photocatalyst filter (6) such that the front surface (6A) and the rear surface (6B) of the photocatalyst filter (6) are exposed and the frame member (31) can be in contact with the cushion material (32) attached to the photocatalyst filter (6).

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06-04-2021 дата публикации

Method for preparing silicon and/or germanium nanowires

Номер: US0010968107B2

The invention relates to a method for preparing a material made of silicon and/or germanium nanowires, comprising the steps of: i) placing a source of silicon and/or a source of germanium in contact with a catalyst comprising a binary metal sulfide or a multinary metal sulfide, said metal(s) being selected from among Sn, In, Bi, Sb, Ga, Ti, Cu, and Zn, by means of which silicon and/or germanium nanowires are obtained, ii) optionally recovering the silicon and/or germanium nanowires obtained in step (i); the catalyst and, optionally, the source of silicon and/or the source of germanium being heated before, during and/or after being placed in contact under temperature and pressure conditions that allow the growth of the silicon and/or germanium nanowires.

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21-07-1981 дата публикации

Method of hydrorefining asphaltenic hydrocarbon feedstocks

Номер: US0004279736A1
Автор: Gleim; William K. T.
Принадлежит:

A method of hydrorefining an asphaltenic charge stock is described which comprises effecting said reaction utilizing a titanium sulfide catalyst in a hydrogen sulfide-containing H2 atmosphere. The catalyst may be employed in slurry form or composited with a high surface area coke support. Preferably chloride is also present in the catalyst. The hydrogen sulfide suitably is present in the gas phase in an amount of from about 10 to about 25 mol. percent based on the moles of H2 present.

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23-09-1986 дата публикации

Indenes by catalytic dehydrocyclization

Номер: US0004613711A1
Принадлежит: The Standard Oil Company

Disclosed is the dehydrocyclization of certain alkylaromatics to indene or a substituted indene by contacting certain alkylaromatics in admixture with H2 O with a sulfided metal oxide catalyst.

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30-04-1985 дата публикации

Supported, self-promoted molybdenum and tungsten sulfide catalysts formed from bis(tetrathiometallate) precursors, and their preparation

Номер: US0004514517A
Автор:
Принадлежит:

Hydrocarbon feeds are upgraded by contacting a feed, at an elevated temperature and in the presence of hydrogen, with a supported, self-promoted catalyst formed by compositing a porous, refractory inorganic oxide, support with one or more complex salts selected from the group consisting of (NR4)2[M(WS4)2], (NR4)x [M(MoS4)2] and mixtures thereof wherein R is one or more alkyl groups, aryl groups or mixture thereof, wherein promoter metal M is covalently bound in the anion and is Ni, Co or Fe and wherein x is 2 if M is Ni and x is 3 if M is Co or Fe and heating said composite in a non-oxidizing atmosphere in the presence of sulfur and hydrogen and a hydrocarbon to form said supported catalyst.

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17-12-2020 дата публикации

METHOD FOR MANUFACTURING PHOTOCATALYTIC FILTER HAVING POROUS NANOFIBER HETEROSTRUCTURE

Номер: US20200391193A1
Принадлежит:

A method for preparing a porous nano-fiber heterostructure photocatalytic filter screen includes: preparing a noble metal nanostructure with tunable spectra and a heterostructure composite photocatalyst of a photocatalytic material; and preparing a large area and multilayer porous nano-fiber filter screen structure, while utilizing a scattering enhancement effect of metal nanoparticles in an porous optical fiber to realize repeated conduction of sunlight in the optical fiber and finally interact with the composite photocatalyst on a surface to improve photocatalytic efficiency. Preparation of the heterostructure composite photocatalyst with a wide spectral response of and tunable visible to infrared band spectra is realized, at the same time, with reference to high adsorbability, high light transmission of nanometer fiber and unique optical characteristics of metal nanoparticles, an air purification filter screen with a high sunlight utilization rate and a high catalytic degradation capability ...

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21-09-1943 дата публикации

Hydrogenating catalyst

Номер: US2330098A
Автор:
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29-08-2023 дата публикации

Doped carbonaceous materials for photocatalytic removal of pollutants under visible light, making methods and applications of same

Номер: US0011738330B2

A method of synthesizing a doped carbonaceous material includes mixing a carbon precursor material with at least one dopant to form a homogeneous/heterogeneous mixture; and subjecting the mixture to pyrolysis in an inert atmosphere to obtain the doped carbonaceous material. A method of purifying water includes providing an amount of the doped carbonaceous material in the water as a photocatalyst; and illuminating the water containing the doped carbonaceous material with visible light such that under visible light illumination, the doped carbonaceous material generates excitons (electron-hole pairs) and has high electron affinity, which react with oxygen and water adsorbed on its surface forming reactive oxygen species (ROS), such as hydroxyl radicals and superoxide radicals, singlet oxygen, hydrogen peroxide, that, in turn, decompose pollutants and micropollutants.

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30-06-2017 дата публикации

НАНОКАТАЛИЗАТОР И СПОСОБ ДЛЯ УДАЛЕНИЯ СОЕДИНЕНИЙ СЕРЫ ИЗ УГЛЕВОДОРОДОВ

Номер: RU2624004C2

Изобретение относится к наноструктурированной каталитической системе для удаления меркаптанов и/или сероводорода из углеводородных газовых смесей, содержащей:(а) одно каталитическое вещество, причем это каталитическое вещество является металлом в элементной форме или оксидом металла, или сульфидом металла, который выбирают из группы, состоящей из Na, V, Mn, Mo, Cd, W,(b) наноструктурированную подложку, причем материал для подложки выбирают из группы, состоящей из однослойных углеродных нанотрубок, двухслойных углеродных нанотрубок, многослойных углеродных нанотрубок, нанопористого углерода, углеродных нановолокон или их смесей, в которой одно каталитическое вещество нанесено на наноструктурированную подложку в количестве от 0,05% (масса/масса) до 9% (масса/масса) относительно суммарной массы каталитической системы, причем эта каталитическая система не содержит второго или любого другого каталитического вещества. Изобретение также относится к способу удаления меркаптанов и сероводорода из ...

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24-06-2019 дата публикации

ДЕГИДРИРОВАНИЕ АЛКАНОВ ДО АЛКЕНОВ

Номер: RU2692254C2
Принадлежит: ХАЛЬДОР ТОПСЁЭ А/С (DK)

Предложен способ дегидрирования алканов или алкилбензолов до соответствующих алкенов и водорода (Н2), включающий приведение в контакт алкана или алкилбензола с катализатором на основе сульфида металла (MeS), в котором дегидрирование проводят в одном или нескольких реакторах дегидрирования в присутствии сероводорода (H2S) без образования H2S в качестве продукта реакции, водяной пар (H2O) составляет менее 10% (объемного расхода) от используемого газа-носителя для алканов или алкилбензолов, молярное соотношение сероводорода к алканам или алкилбензолам находится между 0,01 и 0,2, молярное соотношение сероводорода (H2S) к водороду (Н2) находится между 0,01 и 0,2, и либо бензол, толуол или комбинации их обоих, либо метан, этан или комбинации их обоих используют в качестве газа-носителя. Технический результат - обеспечение высокой устойчивости катализатора. 6 з.п. ф-лы, 5 ил., 3 табл., 7 пр.

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30-10-2017 дата публикации

КОМПОНЕНТЫ КАТАЛИЗАТОРА ДЛЯ ПОЛИМЕРИЗАЦИИ ОЛЕФИНОВ И ПОЛУЧЕННЫЕ ИЗ НИХ КАТАЛИЗАТОРЫ

Номер: RU2634425C2

Изобретение относится к способу получения твердого компонента катализатора и к компоненту катализатора для полимеризации олефинов, содержащих Mg, Zn, Ti и элементы галогена и, по меньшей мере, электронодонорное соединение. Настоящее изобретение также относится к катализаторам, полученным из указанных компонентов, и к их применению в процессах (со)полимеризации олефинов. Способ получения твердого компонента катализатора для (со)полимеризации олефинов СН= CHR, где R представляет собой углеводородный радикал с 1-12 атомами углерода, в некоторых случаях в смеси с этиленом, содержащего Ti, Mg, Zn, Cl и электронодонорное соединение, в котором атомы Zn образуются из одного или нескольких соединений Zn, не имеющих Zn-углеродные связи, более 50% атомов титана находятся в валентности +4 и количество Zn составляет от 0,2 до 3,5% вес. от полного веса указанного твердого компонента катализатора, и количество Ti составляет от 1,1 до 2,5% вес., где способ включает взаимодействие титанового соединения ...

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12-10-2021 дата публикации

Катализатор для фотокаталитического получения водорода, способ его приготовления и способ фотокаталитического получения водорода

Номер: RU2757277C1

Изобретение относится к области фотокатализа, а именно к катализаторам и способам их приготовления, и может найти применение в процессах фотокаталитического выделения водорода из водных растворов Na2S/Na2SO3под действием видимого излучения при комнатной температуре. Описан катализатор для процесса фотокаталитического получения водорода из водного раствора Na2S/Na2SO3под действием видимого излучения, содержащий твёрдый раствор сульфидов кадмия и марганца с добавлением оксида или гидроксида марганца следующего состава: β-Mn3O4-MnOOH-Cd1-xMnxS, где x = 0,02 – 0,04, и способ его приготовления гидротермальной обработкой предварительно осажденного твердого раствора сульфида марганца и кадмия раствором сульфида натрия через промежуточную стадию образования гидроксидов. Также описан способ получения водорода из водного раствора Na2S/Na2SO3под действием видимого излучения с использованием заявленного катализатора. Технический результат – сохранение высокой активности катализатора, приготовленного ...

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27-10-2016 дата публикации

КОМПОНЕНТЫ КАТАЛИЗАТОРА ДЛЯ ПОЛИМЕРИЗАЦИИ ОЛЕФИНОВ И ПОЛУЧЕННЫЕ ИЗ НИХ КАТАЛИЗАТОРЫ

Номер: RU2015112653A
Принадлежит:

... 1. Твердый компонент катализатора для (со)полимеризации олефинов CH= CHR, отличающийся тем, что R представляет собой углеводородный радикал с 1-12 атомами углерода, в некоторых случаях в смеси с этиленом, содержащий Ti, Mg, Zn, Cl и электронодонорное соединение, характеризуемое тем, что более 50% атомов титана находятся в валентности +4, и тем, что количество Zn составляет от 0,1 до 4 % вес. от полного веса указанного твердого компонента катализатора.2. Твердый компонент катализатора по п.1, отличающийся тем, что количество Zn составляет от 0,2 до 3,5 % вес. от полного веса твердого компонента катализатора.3. Твердый компонент катализатора по п.1, отличающийся тем, что молярное отношение Zn/Mg составляет от 0,001 до 0,05.4. Твердый компонент катализатора по п.1, отличающийся тем, что количество Ti составляет от 1,1 до 2,5 % вес.5. Твердый компонент катализатора по п.1, отличающийся тем, что электронодонорное соединение выбирается из сложных эфиров, простых эфиров, аминов, силанов и кетонов ...

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26-11-2024 дата публикации

Катализатор и способ приготовления катализатора гидроочистки тяжелых нефтяных фракций с повышенной гидрообессеривающей и гидродеазотирующей активностью

Номер: RU2830826C1

Изобретение относится к области нефтепереработки, касающейся гидроочистки тяжелых нефтяных фракций с повышенным содержанием азотсодержащих органических соединений. Описаны катализатор и способ приготовления катализатора, который включает в свой состав соединения молибдена, никеля, фосфора и носитель. Катализатор готовят пропиткой носителя по влагоемкости водным раствором, одновременно содержащим смесь комплексных соединений [Ni(Н2О)2]2[Mo4O11(С6Н5О7)2], Ni2[H2P2Mo5O23] и H4[Mo4(C6H5O7)2O11] и диэтиленгликоль в количестве 10-20 об.%, пропитку проводят при температуре 60°С в течение 15-30 мин при периодическом перемешивании с последующей сушкой и сульфидированием, при этом используют носитель, который содержит, мас.%: в пересчете на оксиды неметаллов SiO2 – 2 и B2O3 – 10; натрий – 0,03; γ- и χ-Al2O3 – остальное. После пропитки и сушки катализатор содержит, мас.%: [Ni(Н2О)2]2[Mo4O11(С6Н5О7)2] – 1,5-7,0; Ni2[H2P2Mo5O23] – 22,5-30,0; H4[Mo4(C6H5O7)2O11] – 3,2-6,8; носитель – остальное. Формирующиеся ...

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14-01-2025 дата публикации

Трехкомпонентный фотокатализатор для разложения органических загрязнителей под действием видимого света и способ его получения

Номер: RU2833051C1

Изобретение относится к химической технологии получения катализаторов, а именно трехкомпонентного фотокатализатора на основе нитрида углерода, сульфида цинка индия и углеродных точек. Трехкомпонентный фотокатализатор для разложения органических загрязнителей под действием видимого света представляет собой водную суспензию порошка, состоящего из связанных между собой фаз графитоподобного нитрида углерода g-C3N4 и сульфида цинка индия ZnIn2S4 с включениями углеродных точек, при концентрации сульфида цинка индия в фотокатализаторе 60-92% масс. и массовом соотношении графитоподобного нитрида углерода g-C3N4 и углеродных точек (5-50):1 соответственно. Способ получения предлагаемого катализатора включает следующие этапы: сначала получают водную дисперсию графитоподобного нитрида углерода g-C3N4 и углеродных точек, взятых в массовом соотношении от 5:1 до 50:1, путем ультразвукового перемешивания, затем в полученную дисперсию добавляют источники цинка, индия и серы в количестве, обеспечивающем ...

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09-03-1966 дата публикации

A process for preparing dimethyl furan

Номер: GB0001021708A
Автор:
Принадлежит:

Dimethyl furan (probably the 2,5-isomer) is made by heating a mixture of mesityl oxide with O2 or SO2 at 300-700 DEG C. in the presence as catalyst of vanadium oxide or a compound of the formula Ma(ZXb) wherein M is Co or Bi, Z is Cr, Mo, W or P, X is O or S, a is zero or one and b is 2, 3 or 4, with the provision that when Z is P, X is O and when a is zero, Z is Cr, Mo or W. Specified catalysts are bismuth molybdate, cobalt molybdate, bismuth phosphate, cobalt phosphate, cobalt molybdate, chromium oxide, molybdenum oxide, tungstic oxide and molybden disulphide. The catalyst may be impreganted in an inert support. The O2 or SO2 may be used in admixture with inert gases. The source of oxygen may be an oxygen-liberating compound such as a peroxide which is placed in the reaction zone. The SO2 may be used in the form of its hydrate. The examples relate to the use of a variety of catalysts.

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14-04-1976 дата публикации

PROCESS FOR THE PREPARATION OF ALIPHATICALLY UNSATURATED AROMATI AMINO COMPOUNDS

Номер: GB0001431640A
Автор:
Принадлежит:

... 1431640 Aliphatically unsaturated aromatic amino compounds BAYER AG 17 Dec 1974 [18 Dec 1973 28 May 1974] 54408/74 Heading C2C [Also in Division C1] Aromatic amines wherein the amino group is aromatically bonded and which contain aliphatic C-C multiple bonds are obtained by hydrogenation of aromatic nitro compounds wherein the nitro group is aromatically bonded and which contain aliphatic C-C multiple bonds in the presence of metal sulphides of the formula wherein M is a metal of Group VIII of the Periodic Table or rhenium, and x is 1 to 4, as catalyst, at 20‹ to 140‹ C. and 5 to 150 bars H 2 pressure. The hydrogenation may be carried out in an inert solvent. In nitro compounds to be used as starting materials in this process there may be more than one nitro group and one or more olefinic bonds present; the olefinic bond may occur as an isolated bond in a carbon chain, in or attached to a cycloaliphatic ring, in or attached to a heterocyclic ring or attached to an aromatic ring, and may ...

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04-07-1956 дата публикации

Improvements in or relating to aromatization catalysts

Номер: GB0000751859A
Автор:
Принадлежит:

A catalyst for use in the aromatization or hydroforming of paraffinic and naphthenic hydrocarbons comprises an oxide or sulphide of chromium, vanadium or molybdenum and a support prepared from a zirconia gel or hydrogel which has been peptized by contact with a dilute acid either before or after the incorporation of the specified oxide or sulphide. The zirconia may be precipitated from a dilute solution of zirconium oxychloride or zirconyl sulphate and then peptized by treatment with a dilute solution of acetic or nitric acid. Chromium is incorporated by impregnating the peptized gel with a water soluble chromium compound, e.g. CrO3, chromium acetate or nitrate, or ammonium chromate or dichromate, or by mulling or dry mixing the gel with one of these chromium compounds or with chromium oxalate, chromium carbonate, or Cr2O3. Molybdenum or vanadium is incorporated by impregnating the gel with an ammoniacal or aqueous solution of ammonium molybdate or vanadate or by mulling with MoO3. Alternatively ...

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11-08-1965 дата публикации

Process for reducing the concentration of mercury in hydrogen contaminated therewith

Номер: GB0001000957A
Автор:
Принадлежит:

Hydrogen contaminated with mercury is purified by contact at a temperature below the boiling point of Hg with particulate Al2O3 having metallic Ag supported thereon. The hydrogen, which may be obtained from electrolysis at a mercury cathode, may contain 20,000 -35,000 micrograms Hg per cubic litre and may contain water vapour. Process may take place at 0-50 DEG C. and the space velocity of the gas may be 0.0016 to 16 per second. Metallic Ag may constitute 1-15 wt. per cent of combined Ag and Al2O3. A continuous process may be arranged using two reactors in parallel. When the H2 from the first reactor is found to contain more than 25 m g. Hg per c.l., the gas flow is transferred to the second reactor. The first reactor is reactivated by heating 1-6 hrs. at 200-600 DEG C. whilst passing a stream of dry nitrogen countercurrent to the direction of hydrogen flow. The absorbent may be reactivated up to 7 times.

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21-01-1946 дата публикации

Application of metal sulfide catalysts

Номер: GB0000574800A
Автор:
Принадлежит:

In catalytic gas reactions employing a metal sulphide catalyst at a temperature above 400 DEG F. and superatmospheric pressure, the conditions are first adjusted to give a relatively low conversion and are then intensified to bring the conversion during a period of 24-150 hours to a maximum, which is then maintained for at least 500 hours. The invention may be applied to the conversion of phenols to aromatic hydrocarbons, the dehydrogenation of naphthenes to aromatics, the desulphurisation of hydrocarbon fractions, and the hydrogenation of olefin polymers.

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30-03-2011 дата публикации

Method of coating material surfaces with nanoparticles

Номер: GB0201102589D0
Автор:
Принадлежит:

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12-02-1987 дата публикации

ATTRITION-RESISTANT SULFIDES IN SYNGAS CONVERSIONS

Номер: AU0006074986A
Принадлежит:

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07-07-2005 дата публикации

SYSTEMS AND METHODS OF PRODUCING A CRUDE PRODUCT

Номер: CA0002551092A1
Принадлежит:

Contact of a crude feed with one or more catalysts produces a total product that includes a crude product. The crude feed has a residue content of at least 0.2 grams of residue per gram of crude feed. The crude product is a liquid mixture at 25 ~C and 0.101 MPa. One or more properties of the crude product may be changed by at least 10 % relative to the respective properties of the crude feed. In some embodiments, gas is produced during contact with one or more catalysts and the crude feed.

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04-10-2012 дата публикации

Dispersed metal sulfide-based catalysts

Номер: US20120252660A1
Принадлежит: Intevep SA

The invention provides a catalyst composition, which includes an emulsion of an aqueous phase in an oil phase, wherein the aqueous phase comprises an aqueous solution containing a group 6 metal and a group 8, 9 or 10 metal. The metals can be provided in two separate emulsions, and these emulsions are well suited for treating hydrocarbon feedstocks.

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25-10-2012 дата публикации

In situ radio frequency catalytic upgrading

Номер: US20120267095A1
Принадлежит: ConocoPhillips Co, HARRIS CORP

The present invention relates to a method and system for enhancing in situ upgrading of hydrocarbon by implementing an array of radio frequency antennas that can uniformly heat the hydrocarbons within a producer well pipe, so that the optimal temperatures for different hydroprocessing reactions can be achieved.

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20-12-2012 дата публикации

Hydrothermal hydrocatalytic treatment of biomass

Номер: US20120317873A1
Принадлежит: Shell Oil Co

A method of hydrothermal hydrocatalytic treating biomass is provided. Lignocellulosic biomass is treated with a digestive solvent to form a pretreated biomass containing soluble carbohydrates. The pretreated biomass is contacted, with hydrogen at a temperature in the range of 150° C. to less than 300° C. in the presence of a pH buffering agent and a supported hydrogenolysis catalyst containing (a) sulfur, (b) Mo or W, and (c) Co, Ni or mixture thereof, incorporated into a suitable support, to form a plurality of oxygenated hydrocarbons.

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21-03-2013 дата публикации

AMORPHOUS TRANSITION METAL SULPHIDE FILMS OR SOLIDS AS EFFICIENT ELECTROCATALYSTS FOR HYDROGEN PRODUCTION FROM WATER OR AQUEOUS SOLUTIONS

Номер: US20130068613A1

The present invention relates to amorphous transition metal sulphides as electrocatalysts for hydrogen production from water or aqueous solutions and use thereof in electrodes and electrolysers. 1. Use of amorphous transition metal sulphide films or solids as electrocatalysts for the reduction of proton to form H.2. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein the transition metal sulphide is of formula MS claim 1 , where M is the transition metal and x is in the range 1.5 to 3.5.3. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein the transition metal is selected from the group comprising Mo claim 1 , W claim 1 , Fe claim 1 , Cr claim 1 , Cu claim 1 , Ni.4. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein the transition metal sulphide is MoS claim 1 , MoS claim 1 , WSor WS.5. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein the amorphous transition metal sulphide films or solids are further doped with at least one metal selected from the group comprising Ni claim 1 , Co claim 1 , Mn claim 1 , Cu claim 1 , Fe.6. The use of amorphous transition metal sulphide films or solids of claim 5 , wherein the amorphous transition metal sulphide films or solids are further doped with Ni.7. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein His originated from water or aqueous solutions.8. An electrode for use in the production of hydrogen gas from water or aqueous solutions comprising an electrode substrate claim 1 , wherein the amorphous transition metal sulphide films or solids of are deposited on said electrode substrate.9. The electrode of claim 8 , wherein the amorphous transition metal sulphide films or solids are selected from the group comprising amorphous MoSfilm or solid claim 8 , amorphous MoSfilm or solid claim 8 , amorphous WSfilm or solid claim 8 , and amorphous WSfilm or solid.10. The ...

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04-04-2013 дата публикации

PHOTOCATALYST COMPOSITION OF MATTER

Номер: US20130082009A1
Принадлежит: TROJAN TECHNOLOGIES

There is described a photocatalyst composition of matter comprising a support material. A surface of the support material configured to comprise: (i) a first catalytic material for catalyzing the conversion of HO to Hand O, and (ii) a second catalytic material catalyzing reaction of hydrogen with a target compound. The photocatalyst composition of matter can be used to treat an aqueous fluid containing a target chemical compound, for example, by a process comprising the steps of: (i) contacting the aqueous fluid with the above-mentioned photocatalyst composition of matter; (ii) contacting the aqueous fluid with radiation during Step (i); (iii) catalyzing the conversion of water in the aqueous fluid to Hand Owith the first catalytic material; and (iv) catalyzing reaction of the target chemical compound in the aqueous fluid with hydrogen from Step (iii) in the presence of the second catalytic material to produce a modified chemical compound. 1. A photocatalyst composition of matter comprising a support material , a surface of the support material configured to comprise: (i) a first catalytic material for catalyzing the conversion of HO to Hand O , and (ii) a second catalytic material catalyzing reaction of hydrogen with a target compound.2. The photocatalyst composition of matter defined in claim 1 , wherein the second catalytic material catalyzes reaction of hydrogen with a target organic compound.37-. (canceled)8. The photocatalyst composition of matter defined in claim 1 , wherein the support material comprises a particulate support material.9. (canceled)10. The photocatalyst composition of matter defined in claim 1 , wherein the support material comprises a transition metal oxide having a band gap in the range of from about 1.23 to about 6.7 eV.1112-. (canceled)13. The photocatalyst composition of matter defined in claim 1 , wherein the support material comprises a non-photocatalytically active material.1418-. (canceled)19. The photocatalyst composition of matter ...

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04-07-2013 дата публикации

PHOTOCATALYST POWDER AND PRODUCTION METHOD THEREOF

Номер: US20130172175A1
Автор: KIM Jee Yong, PARK Rae Eun
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Disclosed herein are photocatalyst powder and a production method thereof, and by having photocatalyst particles corn binded without reduction of a specific surface area, the reduction of the specific surface area is nearly none while the pores are developed, as well as the absorption rate with respect to light is superior, the method of producing photocatalyst powder includes forming initial photocatalyst powder by molding nanoparticles of photocatalyst substance into a certain shape through extrusion, and splitting the initial photocatalyst powder into a plurality of photocatalyst powder by injecting the initial photocatalyst powder into a predetermined splitting solution, the initial photocatalyst powder being split into the plurality of photocatalyst powder by the predetermined spliting solution. 1. A method of producing photocatalyst powder , comprising:forming an initial photocatalyst powder by molding nanoparticles of photocatalyst substance into a certain shape through extrusion; andsplitting the initial photocatalyst powder into a plurality of photocatalyst powder by injecting the initial photocatalyst powder into a predetermined splitting solution, the initial photocatalyst powder being split into the plurality of photocatalyst powder by the predetermined splitting solution.2. The method of claim 1 , further comprising:calcining the split photocatalyst powder at a predetermined temperature and at a predetermined pressure; andsintering the calcinated photocatalyst powder at a predetermined temperature and at a predetermined pressure.3. The method of claim 1 , wherein:the predetermined splitting solution is at least one selected from the group comprising amorphous solution, colloidal solution, distilled water and solution having visible ray inducing substance being at least one selected from the group comprising K, Mn and Na.4. The method of claim 1 , wherein:the predetermined splitting solution comprises amorphous solution having same substance as the ...

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04-07-2013 дата публикации

PROCESS FOR THE HYDROCONVERSION OF A LOW QUALITY HYDROCARBONACEOUS FEEDSTOCK

Номер: US20130172638A1
Принадлежит: TOTAL RAFFINAGE MARKETING

The invention concerns a process for upgrading lower quality carbonaceous feedstock using a slurry catalyst composition. The use of particular organometallic compounds as precursors for the dispersed active catalyst allows for reduced coke formation. 2. Process according to , wherein each of Cor Cis a C5-C8 monocyclic polyene ligand comprising from 0 to 5 substituents R , each substituent R being the same of different , R being defined as in .3. Process according to , wherein each of Cand Cis a cyclopentadienyl ligand comprising from 0 to 5 substituents R , each substituent R being the same or different , R being defined as in .5. Process according to claim 1 , wherein -L is selected from Hydride (-L=—H) claim 1 , Halide (-L=—F claim 1 , —Cl claim 1 , —Br claim 1 , —I) claim 1 , cyanide (-L=—CN) claim 1 , Alkoxide (-L=—OR) claim 1 , Thiolate (-L=—SR) claim 1 , Amide (-L=—NR) claim 1 , Phosphide (-L=—PR) claim 1 , Alkyl (-L=—CHR or other) claim 1 , Alkenyl (-L=—CHCHR) claim 1 , Alkynyl (-L=—CCR) claim 1 , Acyl (-L=—COR) claim 1 , Isocyanide (-L=—CNR) claim 1 , Nitrosyl (-L=—NO) claim 1 , Diazenide (-L=—NNR) claim 1 , Imide (-L=═NR) claim 1 , L=-ERor -EX(with E=Si claim 1 , Ge claim 1 , Sn) claim 1 , -L=—PR claim 1 , —PX claim 1 , —AsR claim 1 , —SbR claim 1 , amines claim 1 , L=ER(with E=O claim 1 , S claim 1 , Se claim 1 , Te) claim 1 , where X is an halogen atom claim 1 , R is a C1-C8 claim 1 , preferably a C1-C6 claim 1 , linear or branched claim 1 , alkyl claim 1 , alkenyl Group or a C3-C8 alicyclic or aromatic group.6. Process according to claim 1 , wherein M is selected from Group IIA claim 1 , IIB claim 1 , IIIB claim 1 , IVB claim 1 , VB claim 1 , VIIB claim 1 , VIIB or VIII of the periodic table of the elements.7. Process according to claim 1 , wherein M is selected from Fe claim 1 , V or Mo.8. Process according to claim 1 , wherein said precursor composition furthermore comprises at least one surfactant and/or a least one promoter.9. Process according to ...

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29-08-2013 дата публикации

Semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, and preparation and use thereof

Номер: US20130224105A1

Disclosed are a semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, and preparation and use thereof. The semiconductor photocatalyst has the atomic composition ratio of M˜N-Ax; wherein M˜N are IIB group elements to VIA group elements, or IIIA group elements to VA group elements, A being one element or more than two elements selected from the group consisting of cobalt, nickel, iron, copper, chromium, palladium, platinum, ruthenium, rhodium, iridium and silver; and 0.02%≦x≦1.0%. The method of in-situ preparation of the highly effective semiconductor photocatalyst and catalytically reforming biomass derivatives for hydrogen generation by driving photoreaction with visible light via quantum dots is simple, fast, highly effective, inexpensive and practical. The in situ reaction can occur in sunlight without the need of harsh conditions such as calcination.

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19-09-2013 дата публикации

Photochemical Processes and Compositions for Methane Reforming Using Transition Metal Chalcogenide Photocatalysts

Номер: US20130239469A1

The present invention provides a transition metal chalcogenide photocatalyst, a reactor using the transition metal chalcogenide photocatalyst, and methods of making and using a transition metal chalcogenide photocatalyst for reforming CHwith CO. 1. A photocatalyst for reforming methane with COcomprising:{'sub': 4', '2, 'a transition metal chalcogenide photocatalyst chemically stable in an environment comprising CHand CO, wherein the transition metal chalcogenide photocatalyst comprises Ti, V, Cr, Mn, Fe, Co, Ni, Zr, Nb, Mo, Tc, Ru, Rh, Pt, Hf, Ta, W, Re, Os, Ir, Pt or combinations thereof.'}2. The photocatalyst of claim 1 , wherein the transition metal chalcogenide photocatalyst comprises TiS claim 1 , VS claim 1 , CrS claim 1 , MnS claim 1 , FeS claim 1 , CoS claim 1 , NiS claim 1 , ZrS claim 1 , NbS claim 1 , MoS claim 1 , TcS claim 1 , RuS claim 1 , RhS claim 1 , PtS claim 1 , HfS claim 1 , TaS claim 1 , WS claim 1 , ReS claim 1 , OsS claim 1 , IrS claim 1 , PtSor combinations thereof.3. The photocatalyst of claim 1 , wherein the transition metal chalcogenide photocatalyst comprises CoSand MoS; CoSand WS; NiSand MoS; or NiSand WS.4. The photocatalyst of claim 1 , wherein the transition metal chalcogenide photocatalyst is supported on a conductive inert support optionally consisting of carbon having a surface area exceeding about 120 g/m.5. A gas reforming electrode for reforming CHwith COcomprising:a conductive web; and{'sub': 4', '2, 'a transition metal chalcogenide photocatalyst applied on at least one face of the conductive web and is chemically stable in an environment comprising CHand CO.'}6. The gas reforming electrode of claim 5 , wherein said conductive web is a carbon cloth.7. The gas reforming electrode of claim 5 , wherein said catalyst is mixed with an optionally perfluorinated hydrophobic binder.8. The gas reforming electrode of claim 5 , wherein the transition metal chalcogenide photocatalyst comprises Ti claim 5 , V claim 5 , Cr claim 5 , Mn claim ...

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21-11-2013 дата публикации

Method for reducing carbon dioxide

Номер: US20130306488A1
Принадлежит: Panasonic Corp

A method for reducing carbon dioxide with use of a device for reducing carbon dioxide includes steps of (a) preparing the device. The device includes a vessel, a cathode electrode and an anode electrode. An electrolytic solution is stored in the vessel, the cathode electrode contains a copper rubeanate metal organic framework, the copper rubeanate metal organic framework is in contact with the electrolytic solution, the anode electrode is in contact with the electrolytic solution, and the electrolytic solution contains carbon dioxide. The method further includes step of (b) applying a voltage difference between the cathode electrode and the anode electrode so as to reduce the carbon dioxide.

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26-12-2013 дата публикации

Capture mass composed of elemental sulphur deposited on a porous support for capturing heavy metals

Номер: US20130341564A1
Принадлежит: IFP Energies Nouvelles IFPEN

The present invention concerns the elimination of heavy metals, in particular mercury and possibly arsenic and lead, present in a dry or moist gaseous effluent ( 1 ) by means of a capture mass ( 2 ) comprising a porous support at least part of which is of low mesoporosity and an active phase based on sulphur. The invention is advantageously applicable to the treatment of gas of industrial origin, synthesis gas or natural gas.

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02-01-2014 дата публикации

Metal nanoparticle deposited inorganic nanostructure hybrids, uses thereof and processes for their preparation

Номер: US20140005040A1

This invention relates to a hybrid component comprising at least one nanoparticle of inorganic layered compound (in the form of fullerene-like structure or nanotube), and at least one metal nanoparticle, uses thereof as a catalyst, (e.g. photocatalysis) and processes for its preparation.

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06-03-2014 дата публикации

Hydroconversion Multi-Metallic Catalyst and Method For Making Thereof

Номер: US20140066293A1
Принадлежит: Chevron USA Inc

The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The self-supported MMS catalyst contains Ni:W in a mole ratio of 1:3 to 4:1, on a transition metal basis. The self supported MMS catalyst is characterized as having an HYD reaction rate constant of at least 15% higher than that of a catalyst comprising nickel sulfide alone or a catalyst comprising tungsten sulfide alone, when compared on same metal molar basis in hydrotreating of benzene as a feedstock at identical process conditions.

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06-03-2014 дата публикации

Hydroconversion Multi-Metallic Catalysts and Method for Making Thereof

Номер: US20140066294A1
Принадлежит: Chevron U.S.A. INC.

The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The self-supported MMS catalyst consists essentially of molybdenum sulfide and tungsten sulfide, wherein the catalyst contains at least 0.1 mol % of Mo and at least 0.1 mol % of W, on a transition metal basis. 1. A self-supported mixed metal sulfide (MMS) catalyst consisting essentially of molybdenum sulfide and tungsten sulfide , wherein the catalyst contains at least 0.1 mol % of Mo and at least 0.1 mol % of W , on a transition metal basis.2. The self-supported MMS catalyst of claim 1 , wherein the catalyst is characterized as having an HDS reaction rate constant of at least 10% higher than that of a catalyst comprising molybdenum sulfide alone or a catalyst comprising tungsten sulfide alone claim 1 , when compared on same metal molar basis in hydrotreating a Heavy Coker Gas Oil as a feedstock under process conditions as indicated in Table E.3. The self-supported MMS catalyst of claim 2 , wherein the HDS reaction rate constant is at least 15% higher than that of a catalyst comprising molybdenum sulfide alone or a catalyst comprising tungsten sulfide alone claim 2 , when compared on the same metal molar basis in hydrotreating of a Heavy Coker Gas Oil as a feedstock under process conditions as indicated in Table E.4. The self-supported MMS catalyst of claim 1 , wherein the catalyst is characterized as having a hydrogenolysis (HYL) reaction rate constant of at least 10% higher than a catalyst comprising molybdenum sulfide alone or a catalyst comprising tungsten sulfide catalyst alone claim 1 , when compared on same metal molar basis in hydrotreating a diphenylether under process conditions as indicated in Table C.5. The self-supported MMS catalyst of claim 4 , wherein the HYL reaction rate constant is at least 15% higher than that of a catalyst comprising molybdenum sulfide alone or a catalyst comprising ...

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06-03-2014 дата публикации

Hydroconversion Multi-Metallic Catalysts and Method for Making Thereof

Номер: US20140066295A1
Принадлежит: Chevron U.S.A. INC.

A self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock is disclosed. The self-supported MMS catalyst is characterized by an HDN reaction rate constant of at least 100 g feed hrg catalystassuming first order kinetics, and an HDS reaction rate constant of at least 550 g feed hrg catalystassuming first order kinetics in hydrotreating of a Heavy Coker Gas Oil as a feedstock with properties indicated in Table A and at given process conditions as indicated in Table E. In one embodiment, the catalyst is characterized as having a multi-phased structure comprising five phases: a molybdenum sulfide phase, a tungsten sulfide phase, a molybdenum tungsten sulfide phase, an active nickel phase, and a nickel sulfide phase. 1. A self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum sulfide , nickel sulfide , and tungsten sulfide , wherein the catalyst is characterized as having an HDN reaction rate constant of at least 100 g feed hrg catalyst assuming first order kinetics , and an HDS reaction rate constant of at least 550 g feed hrg catalyst assuming first order kinetics in hydrotreating of a Heavy Coker Gas Oil as a feedstock with properties indicated in Table A and under process conditions as indicated in Table E.2. The self-supported MMS catalyst of claim 1 , wherein the catalyst is characterized as having an HDN reaction rate constant of at least 4 hrassuming first order kinetics claim 1 , and an HDS reaction rate constant of at least 5 hr claim 1 , assuming first order kinetics in hydrotreating of a Heavy Vacuum Gas Oil as a feedstock with properties indicated in Table B and under process conditions as indicated in Table F.3. The self-supported MMS catalyst of claim 1 , wherein the catalyst is characterized as having an HYD reaction rate constant and an HYL reaction rate constant of at least 10% higher than the rate constants of a catalyst comprising nickel sulfide and molybdenum sulfide claim 1 , or a catalyst comprising ...

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06-03-2014 дата публикации

Hydroconversion Multi-Metallic Catalysts and Method for Making Thereof

Номер: US20140066296A1
Принадлежит: Chevron U.S.A. INC.

The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The MMS catalyst has molar ratios of metal components Ni:Mo:W in a region defined by five points ABCDE of a ternary phase diagram, and wherein the five points ABCDE are defined as: A (Ni=0.72, Mo=0.00, W=0.25), B (Ni=0.25, Mo=0.00, W=0.75), C (Ni=0.25, Mo=0.25, W=0.50), D (Ni=0.60, Mo=0.25, W=0.15), E (Ni=0.72, Mo=0.13, W=0.15). 1. A self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum sulfide , nickel sulfide , and tungsten sulfide , and wherein the catalyst is characterized as having molar ratios of metal components Ni:Mo:W in a region defined by five points ABCDE of a ternary phase diagram , and wherein the five points ABCDE are defined as: A (Ni=0.72 , Mo=0.00 , W=0.25) , B (Ni=0.25 , Mo=0.00 , W=0.75) , C (Ni=0.25 , Mo=0.25 , W=0.50) , D (Ni=0.60 , Mo=0.25 , W=0.15) , E (Ni=0.72 , Mo=0.13 , W=0.15).2. The self-supported MMS catalyst of claim 1 , wherein the catalyst is characterized as having a molar ratio of metal components Ni:Mo:W in a range of:0.33≦Ni/(W+Mo)≦2.57;0.00≦Mo/(Ni+W)≦0.33; and0.18≦W/(Ni+Mo)≦3.00.3. The self-supported MMS catalyst of claim 1 , wherein the catalyst is characterized as having molar ratios of metal components Ni:Mo:W in a region defined by six points ABCDEF of a ternary phase diagram claim 1 , and wherein the six points ABCDEF are defined as: A (Ni=0.67 claim 1 ,Mo=0.00 claim 1 ,W=0.33) claim 1 , B (Ni=0.67 claim 1 , Mo=0.10 claim 1 , W=0.23) claim 1 , C (Ni=0.60 claim 1 , Mo=0.15 claim 1 , W=0.25) claim 1 , D (Ni=0.52 claim 1 , Mo=0.15 claim 1 , W=0.33) claim 1 , E (Ni=0.52 claim 1 , Mo=0.06 claim 1 , W=0.42) claim 1 , F (Ni=0.58 claim 1 , Mo=0.0 claim 1 , W=0.42).4. The self-supported MMS catalyst of claim 1 , wherein the catalyst is characterized as having a molar ratio of metal components Ni:Mo:W in a range of:1.08<=Ni/(Mo+W)<=2.030<=Mo/(Ni+W)<=0.18; ...

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06-03-2014 дата публикации

Hydroconversion Multi-Metallic Catalysts and Method for Making Thereof

Номер: US20140066297A1
Принадлежит: Chevron U.S.A. INC.

The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The MMS catalyst is characterized as having a multi-phased structure comprising five phases: a molybdenum sulfide phase, a tungsten sulfide phase, a molybdenum tungsten sulfide phase, an active nickel phase, and a nickel sulfide phase. 1. A self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum sulfide , nickel sulfide , and tungsten sulfide , wherein the catalyst is characterized as having a multi-phased structure comprising five phases: a molybdenum sulfide phase , a tungsten sulfide phase , a molybdenum tungsten sulfide phase , an active nickel phase , and a nickel sulfide phase.2. The self-supported MMS catalyst of claim 1 , wherein the molybdenum tungsten sulfide phase comprising at least a layer claim 1 , wherein the at least a layer contains at least one of: a) molybdenum sulfide and tungsten sulfide; b) tungsten isomorphously substituted into molybdenum sulfide as individual atoms or as tungsten sulfide domains; c) molybdenum isomorphously substituted into tungsten sulfide as individual atoms or as molybdenum sulfide domains; and d) mixtures thereof.3. The self-supported MMS catalyst of claim 2 , wherein the molybdenum sulfide and tungsten sulfide phase comprises 1 to 6 layers.4. The self-supported MMS catalyst of claim 2 , wherein the at least a layer comprises tungsten isomorphously substituted into molybdenum sulfide as individual atoms forming an intralayer atomic mixture.5. The self-supported MMS catalyst of claim 2 , wherein the at least a layer comprises tungsten isomorphously substituted into molybdenum sulfide as tungsten domains.6. The self-supported MMS catalyst of claim 2 , wherein the at least a layer comprises molybdenum isomorphously substituted into tungsten sulfide as individual atoms forming an intralayer atomic mixture.7. The self-supported MMS catalyst of claim 2 ...

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06-03-2014 дата публикации

Hydroconversion Multi-Metallic Catalysts and Method for Making Thereof

Номер: US20140066298A1
Принадлежит: Chevron U.S.A. INC.

The invention relates to a method for preparing a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock. The method comprises mixing a sufficient amount of a nickel (Ni) metal precursor, a sufficient amount of a molybdenum (Mo) metal precursor, and a sufficient amount of a tungsten (W) metal precursor to produce a catalyst precursor having a molar ratio Ni:Mo:W in relative proportions defined by a region of a ternary phase diagram showing transition metal elemental composition in terms of nickel, molybdenum, and tungsten mol-%, wherein the region is defined by five points ABCDE and wherein the five points are: A (Ni=0.72, Mo=0.00, W=0.28), B (Ni=0.55, Mo=0.00, W=0.45), C (Ni=0.48, Mo=0.14, W=0.38), D (Ni=0.48, Mo=0.20, W=0.33), E (Ni=0.62, Mo=0.14, W=0.24); and sulfiding the catalyst precursor under conditions sufficient to convert the catalyst precursor into a sulfide catalyst. 1. A process for making a self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum sulfide , nickel sulfide , and tungsten sulfide , the process comprising:mixing a sufficient amount of a nickel (Ni) metal precursor, a sufficient amount of a molybdenum (Mo) metal precursor, and a sufficient amount of a tungsten (W) metal precursor to produce a catalyst precursor having a molar ratio of metal components Ni:Mo:W in relative proportions defined by a region of a ternary phase diagram showing transition metal elemental composition in terms of nickel, molybdenum, and tungsten mol-%, wherein the region is defined by five points ABCDE and wherein the five points are: A (Ni=0.72, Mo=0.00, W=0.28), B (Ni=0.55, Mo=0.00, W=0.45), C (Ni=0.48, Mo=0.14, W=0.38), D (Ni=0.48, Mo=0.20, W=0.33), E (Ni=0.62, Mo=0.14, W=0.24); andsulfiding the catalyst precursor under conditions sufficient to convert the catalyst precursor into a sulfide catalyst.2. The process of claim 1 , wherein the amounts of a Ni metal precursor claim 1 , a Mo metal precursor claim 1 , and ...

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02-01-2020 дата публикации

POORLY CRYSTALLINE TRANSITION METAL TUNGSTATE

Номер: US20200001281A1
Принадлежит:

A hydroprocessing catalyst has been developed. The catalyst is a poorly crystalline transition metal tungstate material or a metal sulfide decomposition product thereof. The hydroprocessing using the crystalline ammonia transition metal tungstate material may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking. 2. The poorly crystalline transition metal tungstate material of wherein the poorly crystalline transition metal tungstate material is present in a mixture with at least one binder and wherein the mixture comprises up to 25 wt-% binder.3. The poorly crystalline transition metal tungstate material of wherein the binder is selected from the group consisting of silicas claim 2 , aluminas claim 2 , and silica-aluminas.4. The poorly crystalline transition metal tungstate material of wherein M is nickel or zinc.5. The poorly crystalline transition metal tungstate material of wherein M is nickel.7. The method of further comprising removing at least some of the NH claim 6 , HO or combination thereof to form an intermediate before reacting the mixture at a temperature from about 90° C. to about 350° C. in an autogenous environment.8. The method of wherein the reacting is conducted from about 30 minutes to 14 days.9. The method of wherein the recovering is by filtration or centrifugation.10. The method of further comprising adding a binder to the poorly crystalline transition metal tungstate material.11. The method of wherein the binder is selected from the group consisting of aluminas claim 10 , silicas claim 10 , and alumina-silicas.12. The method of further comprising decomposing the poorly crystalline transition metal tungstate material by sulfidation to form metal sulfides.14. The process of wherein the conversion process is hydroprocessing.15. The process of wherein the conversion process is selected from the group consisting of ...

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07-01-2021 дата публикации

NANOLOG AND NANOPARTICLES AND METHOD OF FORMATION

Номер: US20210002144A1
Принадлежит:

A nanostructure is provided that in one embodiment includes a cluster of cylindrical bodies. Each of the cylindrical bodies in the cluster are substantially aligned with one another so that their lengths are substantially parallel. The composition of the cylindrical bodies include tungsten (W) and sulfur (S), and each of the cylindrical bodies has a geometry with at least one dimension that is in the nanoscale. Each cluster of cylindrical bodies may have a width dimension ranging from 0.2 microns to 5.0 microns, and a length greater than 5.0 microns. In some embodiments, the cylindrical bodies are composed of tungsten disulfide (WS). In another embodiment the nanolog is a particle comprised of external concentric disulfide layers which encloses internal disulfide folds and regions of oxide. Proportions between disulfide and oxide can be tailored by thermal treatment and/or extent of initial synthesis reaction. 1. A nanostructure comprising:a cluster of substantially cylindrical bodies, the substantially cylindrical bodies in said cluster are directly in contact with one another along their lengths and are substantially aligned with one another so that their lengths are substantially parallel, the composition of the cylindrical bodies comprising tungsten (W) and sulfur (S), and each of the cylindrical bodies has a geometry with at least one dimension that is in the nanoscale.2. The nanostructure of claim 1 , wherein each cluster of cylindrical bodies has a width dimension ranging from 0.2 microns to 5.0 microns claim 1 , and a length greater than 5.0 microns.3. The nanostructure of claim 1 , wherein each cylindrical body has a hollow core across its entire length.4. The nanostructure of claim 3 , wherein an oxide layer between the tungsten and sulfur containing body and the hollow core.5. The nanostructure of claim 1 , wherein the cylindrical body has a solid core in at least one portion of the cylindrical body along its length.6. A method of forming a nanostructure ...

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07-01-2021 дата публикации

Hydrogenation reaction catalyst and preparation method therefor

Номер: US20210002403A1
Принадлежит: Hanwha Solutions Corp

Provided are a hydrogenation reaction catalyst and a preparation method therefor, and more particularly, to a hydrogenation reaction catalyst including sulfur as a promoter, thereby selectively hydrogenating an olefin by changing a relative hydrogenation rate of the olefin and an aromatic group during a hydrogenation reaction of an unsaturated hydrocarbon compound containing an aromatic group, and a preparation method therefor.

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17-01-2019 дата публикации

Doped carbonaceous materials for photocatalytic removal of pollutants under visible light, making methods and applications of same

Номер: US20190015818A1
Принадлежит: University of Arkansas

A method of synthesizing a doped carbonaceous material includes mixing a carbon precursor material with at least one dopant to form a homogeneous/heterogeneous mixture; and subjecting the mixture to pyrolysis in an inert atmosphere to obtain the doped carbonaceous material. A method of purifying water includes providing an amount of the doped carbonaceous material in the water as a photocatalyst; and illuminating the water containing the doped carbonaceous material with visible light such that under visible light illumination, the doped carbonaceous material generates excitons (electron-hole pairs) and has high electron affinity, which react with oxygen and water adsorbed on its surface forming reactive oxygen species (ROS), such as hydroxyl radicals and superoxide radicals, singlet oxygen, hydrogen peroxide, that, in turn, decompose pollutants and micropollutants.

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16-01-2020 дата публикации

OXYGEN REDUCTION CATALYST, ELECTRODE, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL

Номер: US20200020966A1
Принадлежит: SHOWA DENKO K.K.

Provided are an oxygen reduction catalyst having a high electrode potential under a fuel cell operating environment, an electrode containing the oxygen reduction catalyst, a membrane electrode assembly in which a cathode is the electrode, and a fuel cell including the membrane electrode assembly. The oxygen reduction catalyst used here contains cobalt, sulfur, and oxygen as elements, has a CoScubic structure in powder X-ray diffractometry, and having an S—Co/S—O peak area ratio of 6 to 15 in an S2p spectrum in X-ray photoelectron spectroscopic analysis. 1. An oxygen reduction catalyst comprising cobalt , sulfur , and oxygen as elements , having a CoScubic structure in powder X-ray diffractometry ,and having an S—Co/S—O peak area ratio of 6 to 15 in an S2p spectrum in X-ray photoelectron spectroscopic analysis.2. An electrode comprising a catalyst layer containing the oxygen reduction catalyst according to .3. A membrane electrode assembly comprising a cathode claim 2 , an anode claim 2 , and a polymer electrolyte membrane interposed between the cathode and the anode claim 2 , wherein the cathode is the electrode according to .4. A fuel cell comprising the membrane electrode assembly according to . The present invention relates to an oxygen reduction catalyst, an electrode including a catalyst layer containing the oxygen reduction catalyst, a membrane electrode assembly including the electrode, and a fuel cell.A polymer electrolyte fuel cell (PEFC) is a fuel cell having a form in which: a solid polymer electrolyte is sandwiched between an anode and a cathode; a fuel is supplied to the anode; and oxygen or air is supplied to the cathode, whereby oxygen is reduced at the cathode to produce electricity. As the fuel, hydrogen gas or methanol and the like is mainly used. To enhance a reaction rate in the PEFC and to enhance the energy conversion efficiency of the PEFC, a layer containing a catalyst has been conventionally provided on the surface of a cathode or the ...

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28-01-2021 дата публикации

MULTICOMPONENT PLASMONIC PHOTOCATALYSTS CONSISTING OF A PLASMONIC ANTENNA AND A REACTIVE CATALYTIC SURFACE: THE ANTENNA-REACTOR EFFECT

Номер: US20210023541A1
Принадлежит: William Marsh Rice University

A multicomponent photocatalyst includes a reactive component optically, electronically, or thermally coupled to a plasmonic material. A method of performing a catalytic reaction includes loading a multicomponent photocatalyst including a reactive component optically, electronically, or thermally coupled to a plasmonic material into a reaction chamber; introducing molecular reactants into the reaction chamber; and illuminating the reaction chamber with a light source. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. (canceled)22. A multicomponent photocatalyst comprising:a reactive component optically, electronically, or thermally coupled to a plasmonic material, wherein the reactive component is alloyed at the surface of the plasmonic material.23. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material is selected from gold (Au) claim 22 , silver (Ag) claim 22 , copper (Cu) claim 22 , aluminum (Al) claim 22 , alloys thereof claim 22 , TiN claim 22 , or doped semiconductors.24. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material is a 2-dimensional material.25. The multicomponent photocatalyst of claim 22 , wherein a molar ratio of the plasmonic material to the reactive component may be between 1000:1 to 10:1.26. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material has a plasmon resonance at a wavelength between 180 nm and 10 microns.27. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material has a plasmon resonance at a wavelength between about 380 nm-760 nm of the electromagnetic spectrum.28. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material has at least one dimension with a size between about 1 nm and 300 nm.29. The ...

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02-02-2017 дата публикации

Phosphonic acid catalyst in dehydrative cyclization of 5 and 6 carbon polyols with improved color and product accountability

Номер: US20170029434A1
Принадлежит: Archer Daniels Midland Co

A process for preparing cyclic dehydration products from sugar alcohols is described. The process involve using a mixed-acid catalyst reaction mixture containing a reducing acid, having a pKa of about 1.0-1.5, and at least a strong Brønsted acid or a Lewis acid, having a pKa≦0, or both acids in a solution to dehydrate and ring close said sugar alcohol. Synergistically, the mixed-acid catalysis can produce greater amounts of the desired product at similar levels of compositional accountability than either of the component acid catalysts acting alone.

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31-01-2019 дата публикации

NANOLOG AND NANOPARTICLES AND METHOD OF FORMATION

Номер: US20190031525A1
Принадлежит:

A nanostructure is provided that in one embodiment includes a cluster of cylindrical bodies. Each of the cylindrical bodies in the cluster are substantially aligned with one another so that their lengths are substantially parallel. The composition of the cylindrical bodies include tungsten (W) and sulfur (S), and each of the cylindrical bodies has a geometry with at least one dimension that is in the nanoscale. Each cluster of cylindrical bodies may have a width dimension ranging from 0.2 microns to 5.0 microns, and a length greater than 5.0 microns. In some embodiments, the cylindrical bodies are composed of tungsten disulfide (WS2). In another embodiment the nanolog is a particle comprised of external concentric disulfide layers which encloses internal disulfide folds and regions of oxide. Proportions between disulfide and oxide can be tailored by thermal treatment and/or extent of initial synthesis reaction. 1. A nanostructure comprising:a cluster of substantially cylindrical bodies that are substantially aligned with one another so that their lengths are substantially parallel, the composition of the cylindrical bodies comprising tungsten (W) and sulfur (S), and each of the cylindrical bodies has a geometry with at least one dimension that is in the nanoscale, wherein each cluster of cylindrical bodies has a width dimension ranging from 0.2 microns to 5.0 microns, and a length greater than 5.0 microns.2. The nanostructure of claim 1 , wherein each of the cylindrical bodies include externally concentric crystalline regions comprised of said tungsten (W) and said sulfur (S) and crystalline core regions comprised of an oxide containing material claim 1 , wherein folds of said tungsten (W) and said sulfur (S) are present between said externally concentric crystalline regions and said crystalline core regions comprised of said oxide containing material.3. The nanostructure of claim 1 , wherein the cylindrical bodies are composed of tungsten disulfide (WS).4. The ...

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08-02-2018 дата публикации

METHOD FOR PREPARING BIOMASS GRAPHENE BY USING CELLULOSE AS RAW MATERIAL

Номер: US20180037460A1
Принадлежит:

A method for preparing biomass graphene by using cellulose as a raw material includes preparing a catalyst solution, carrying out ionic coordination and high-temperature deoxidization on cellulose and a catalyst so as to obtain a precursor, carrying out thermal treatment and pre-carbonization, and carrying out acid treatment and drying to obtain the graphene. The graphene is uniform in morphology with a single-layer or multi-layer two-dimensional layered structure having a dimension of 0.5 μm to 2 μm, and an electric conductivity of 25000 S/m to 45000 S/m. The graphene can be applied to electrode materials of super capacitors and lithium ion batteries, and can also be added to resin and rubber as an additive so as to improve physical properties of the resin and the rubber. 110.-. (canceled)11. A method for preparing biomass graphene using cellulose as a raw material , comprising:preparing a catalyst solution, wherein a catalyst is added to distilled water to form a first mixture, the first mixture is stirred for 10 to 30 min to form a catalyst solution, in which the ratio of catalyst to solvent is within 2:100 to 35:100;preparation a precursor, wherein a biomass cellulose is added to the catalyst solution to form a second mixture, the second mixture is stirred for 1 to 4 hours then deoxidized at a high temperature and dried to obtain a precursor, in which the mass ratio of cellulose to solvent is within 3:100 to 40:100;heat-treating the precursor including a pre-carbonization step and a secondary carbonization step, wherein the pre-carbonization step includes heating the precursor to within 220 to 650° C. at 10 to 20° C./min for 1 to 6 hours in an atmosphere including at least one of nitrogen gas, argon gas, and hydrogen gas to obtain a pre-carbonized precursor, and the secondary carbonization step includes heating the pre-carbonized precursor to within 900 to 1650° C. at 5 to 16° C./min for 4 to 15 hours to obtain a heat-treated product; andobtaining graphene, ...

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19-02-2015 дата публикации

On-Line Sulfiding Apparatus and Process

Номер: US20150051066A1
Принадлежит:

An apparatus and process for passivating catalysts wherein an inert gas is used to administer a precise, measurable amount of passivating agent to a catalyst in a substantially safer manner than conventional means. The inventive apparatus at least includes a first container comprising at least one inert gas, a second container comprising at least one passivating agent, and a reactor comprising at least one catalyst, the first container, second container, and reactor being fluidly connected by a plurality of conduits. The inventive process at least includes pressurizing a first container with an inert gas, filling a second container with passivating agent, providing a reactor containing a passivatable catalyst, mixing the inert with the passivating agent, forming a mixture of passivating agent and inert gas, and introducing the mixture of passivating agent and inert gas into the reactor. 1. An apparatus for passivating catalysts , consisting essentially of:a. a first container comprising at least one inert gas,b. a second container comprising at least one passivating agent, andc. a reactor comprising at least one catalyst,wherein the first container, second container, and reactor are fluidly connected by a plurality of conduits.2. The apparatus according to wherein the catalyst is a hydrogenation metal catalyst.3. The apparatus according to wherein the hydrogenation metal catalyst is selected from a group consisting of Pt claim 2 , Re claim 2 , Co claim 2 , Mo claim 2 , Pd claim 2 , Ni claim 2 , Fe claim 2 , Ir and mixtures thereof.4. The apparatus according to wherein the passivating agent is a sulfiding agent.5. The apparatus according to wherein the sulfiding agent is selected from the group consisting of carbon disulfide claim 4 , n-butyl mercaptan claim 4 , ethyl mercaptan claim 4 , di-tertiary nonyl polysulfide claim 4 , dimethyl disulfide claim 4 , dimethyl sulfide claim 4 , dimethyl sulfoxide claim 4 , hydrogen sulfide claim 4 , and mixtures thereof.6. The ...

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14-02-2019 дата публикации

METHOD FOR PREPARING SILICON AND/OR GERMANIUM NANOWIRES

Номер: US20190047870A1
Принадлежит: COMMISSARIAT A L'ENERGIE ATOMIQUE

The invention relates to a method for preparing a material made of silicon and/or germanium nanowires, comprising the steps of: 1. Method for preparing a material made of silicon and/or germanium nanowires , that comprises the steps of:i) placing a silicon source and/or a germanium source in contact with a catalyst comprising a binary metal sulfide or a multinary metal sulfide, said metal(s) being selected from Sn, In, Bi, Sb, Ga, Ti, Cu, and Zn, by means of which the silicon and/or germanium nanowires are obtained,ii) optionally recovering the silicon and/or germanium nanowires obtained in step (i);the catalyst, and optionally the silicon source and/or the germanium source, being heated before, during, and/or after the placing in contact under temperature and pressure conditions allowing the growth of silicon and/or germanium nanowires.2. Method according to claim 1 , wherein the metal is tin.3. Method according to claim 2 , wherein the heating is done claim 2 , for example under atmospheric pressure claim 2 , at a temperature of between 200° C. and 500° C. claim 2 , in particular between 230° C. and 500° C. claim 2 , more specifically between 250° C. and 500° C. claim 2 , more specifically still between 300° C. and 450° C. claim 2 , in particular between 300° C. and 400° C.4. Method according to claim 1 , wherein the silicon source is selected from silanes claim 1 , in particular SiH; SiCl; and organosilanes.5. Method according to claim 1 , wherein the germanium source is selected from germanes claim 1 , in particular GeH4; GeCl4; and organogermanes.6. Method according to claim 1 , wherein the catalyst is in the form of nanoparticles.7. Method according to claim 1 , wherein said catalyst is present on a substrate.8. Method according to claim 1 , wherein the catalyst is present on a substrate claim 1 , said catalyst being in the form of one or more thin layers on said substrate.9. Method according to claim 1 , wherein the catalyst is present on a substrate claim 1 ...

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14-02-2019 дата публикации

LEAD SULFIDE AS ALKANE DEHYDROGENATION CATALYST

Номер: US20190047921A1
Принадлежит: Haldor Topsoe A/S

A catalyst for the dehydrogenation of alkanes to alkenes comprises lead(II) sulfide (PbS) as catalytically active material supported on a carrier. The dehydrogenation is carried out at a temperature between 500 and 650° C. and at a pressure from 0.5 bar below ambient pressure to 5 bar above ambient pressure. 1. A catalyst for the dehydrogenation of alkanes to alkenes , said catalyst comprising a catalytically active material supported on a carrier , wherein the catalytically active material is lead(II) sulfide (PbS) , and wherein the catalyst is regenerated in several steps.2. Catalyst according to claim 1 , wherein the steps for regeneration comprise (a) oxidation in dilute air claim 1 , (b) conversion into the corresponding sulfate claim 1 , and (c) conversion back to the sulfide by reduction in dilute hydrogen containing some hydrogen sulfide.3. Catalyst according to claim 2 , wherein the oxidation in step (a) is carried out at a temperature between 350 and 750° C.4. Catalyst according to claim 1 , wherein the carrier is treated with a dilute alkali compound and subsequently washed to remove acid sites.5. Catalyst according to claim 4 , wherein the dilute alkali compound is potassium carbonate or any other potassium compound.6. A process for the dehydrogenation of alkanes to the corresponding unsaturated alkenes and hydrogen (H) comprising contacting the alkane with a catalyst according to supported on a carrier claim 1 , said catalyst comprising lead(II) sulfide (PbS).7. Process according to claim 6 , wherein the dehydrogenation is carried out at a temperature between 500 and 650° C.8. Process according to claim 6 , wherein the dehydrogenation is carried out at a pressure from 0.5 bar below ambient pressure to 5 bar above ambient pressure.9. Process according to claim 8 , wherein the dehydrogenation is carried out at ambient pressure or at a pressure from 0.5 bar below ambient pressure up to ambient pressure.10. Process according to claim 6 , wherein the feed ...

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21-02-2019 дата публикации

SULFIDE-BASED ALKANE DEHYDROGENATION CATALYSTS

Номер: US20190054453A1
Принадлежит: Haldor Topsoe A/S

A catalyst for the dehydrogenation of alkanes to alkenes comprises a catalytically active material supported on a carrier, wherein the catalytically active material is a metallic sulfide (MeS) comprising Fe, Co, Ni, Cu, Mo or W or any combination of two or more metals selected from Pb, Sn, Zn, Fe, Co, Ni, Cu, Mo and W. The catalyst is regenerated in several steps. The dehydrogenation is carried out at a temperature between 450 and 650° C. and a pressure from 0.9 bar below ambient pressure to 5 bar above ambient pressure. 1. A catalyst for the dehydrogenation of alkanes to alkenes , said catalyst comprising a catalytically active material supported on a carrier , wherein the catalytically active material comprises a metallic sulfide (MeS) , which is a semiconductor , and wherein the catalyst is regenerated in several steps.2. The catalyst according to claim 1 , wherein the metal of the metallic sulfide comprises Fe claim 1 , Co claim 1 , Ni claim 1 , Cu claim 1 , Mo or W or any combination of two or more metals selected from Pb claim 1 , Sn claim 1 , Zn claim 1 , Fe claim 1 , Co claim 1 , Ni claim 1 , Cu claim 1 , Mo and W.3. The catalyst according to claim 1 , wherein the steps for regeneration comprise oxidation in dilute air claim 1 , conversion of the sulfide into the corresponding sulfate and conversion back to the sulfide by reduction in dilute hydrogen containing some hydrogen sulfide.4. The catalyst according to claim 3 , wherein the oxidation in dilute air is carried out at a temperature between 350 and 750° C.5. The catalyst according to claim 1 , wherein the carrier is treated with a dilute alkali compound and subsequently washed to remove acid sites.6. The catalyst according to claim 5 , wherein the dilute alkali compound is potassium carbonate or any other potassium compound.7. A process for the dehydrogenation of alkanes to the corresponding unsaturated alkenes and hydrogen (H) comprising contacting the alkane with a catalyst according to claim 1 , said ...

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15-05-2014 дата публикации

Hydroconversion Multi-Metallic Catalysts and Method for Making Thereof

Номер: US20140135207A1
Принадлежит: Chevron USA Inc

The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The MMS catalyst is characterized as having a BET surface area of at least 20 m 2 /g and a pore volume of at least 0.05 cm 3 /g. In one embodiment, the MMS catalyst is also characterized as having a multi-phased structure comprising five phases: a molybdenum sulfide phase, a tungsten sulfide phase, a molybdenum tungsten sulfide phase, an active nickel phase, and a nickel sulfide phase.

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04-03-2021 дата публикации

METHOD FOR PREVENTING OR REDUCING GROWTH OF A MICROORGANISM ON A SURFACE

Номер: US20210061670A1
Принадлежит: Imam Abdulrahman Bin Faisal University

Methods of synthesizing BiS—CdS particles in the form of spheres as well as properties of these BiS—CdS particles are described. Methods of photocatalytic degradation of organic pollutants employing these BiS—CdS particles and methods of preventing or reducing microbial growth on a surface by applying these BiS—CdS particles in the form of a solution or an antimicrobial product onto the surface are also specified. 17-. (canceled)8. A method for preventing or reducing growth of a microorganism on a surface , the method comprising:{'sub': 2', '3, 'applying BiS—CdS particles onto the surface;'} [{'sub': 2', '3, 'the BiS—CdS particles comprise bismuth(III) sulfide and cadmium(II) sulfide;'}, {'sub': 2', '3, 'the BiS—CdS particles are in the form of spheres; and'}, {'sub': 2', '3, 'the BiS—CdS particles are in contact with the surface for 1-24 hours.'}], 'wherein9. The method of claim 8 , wherein an atomic ratio of bismuth to cadmium in the BiS—CdS particles is in a range of 0.5:1 to 4:1 claim 8 , and an atomic ratio of sulfur to bismuth in the BiS—CdS particles is in a range of 3:2 to 8:1.10. The method of claim 8 , wherein the BiS—CdS particles have a BET surface area of 5-25 m/g claim 8 , a pore size of 10-50 nm claim 8 , and a pore volume of 0.02-0.2 cm/g.11. The method of claim 8 , wherein the BiS—CdS particles are applied onto the surface as a solution comprising a solvent and 1 μg/mL to 50 mg/mL of the BiS—CdS particles relative to a total volume of the solution.12. The method of claim 11 , wherein the solvent comprises dimethyl sulfoxide and water.13. The method of claim 8 , wherein the BiS—CdS particles are applied onto the skin of a subject as an antimicrobial cream comprising 0.01 wt %-50 wt % of the BiS—CdS particles relative to a total weight of the antimicrobial cream.14Acinetobacter baumannii, Enterobacter aerogenes, Escherchia coli, Klebsiella oxytocaKlebsiella pneumoniae.. The method of claim 8 , wherein the microorganism is at least one gram-negative ...

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03-03-2016 дата публикации

Microbial Fuel Cell for Generating Electricity, and Process for Producing Feedstock Chemicals Therefor

Номер: US20160064758A1
Принадлежит:

A method of preparing feedstock chemical for use in a microbial fuel cell comprises admixing a sodium lignosulfate solution with a catalyst to form a chemical slurry, irradiating the slurry with ultraviolet electromagnetic energy to effect photocatalytic degradation of the sodium lignosulfate lower weight molecular compounds selected from the group consisting of methanol, formic acid, acetic acid C-2 alcohols and C-4 alcohols as part of a photocatalyzed mixture, and separating said catalyst from said photocatalyzed mixture to form a feedstock concentrate. 1. A method of preparing feedstock chemical for use in a microbial fuel cell , comprising ,admixing a source mixture composing a lignin source material with a catalyst to form a chemical source slurry,irradiating said source slurry with electromagnetic energy at a wavelength selected to effect photocatalytic degradation of said lignin source material to short chain fatty acid and/or carbon chemicals as part of a photocatalyzed mixture,separating said metal oxide from said photocatalyzed mixture, andseparating from one or more residual fatty acids from the catalyzed mixture to form a concentrate, andfeeding said concentrate to said microbial fuel cell.2. The method as claimed in claim 1 , wherein the fuel cell comprises a single chamber air-cathode microbial fuel cell claim 1 , wherein said concentrate is fed into said microbial fuel cell in a substantially continuous feed process claim 1 , and operating said fuel cell to bioelectrically convert said concentrate into electricity whilst maintaining said concentrate at a temperature selected at between about 35° C. and 40° C.3. The method as claimed in claim 2 , wherein said metal oxide catalyst comprises TiOhaving an average particle size selected at from 5 nm to less than about 300 nm claim 2 , and the step of separating said metal oxide comprises physically removing said metal oxide catalyst from said photocatalyzed mixture by centrifuge.4. The method as claimed in ...

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28-02-2019 дата публикации

CRYSTALLINE TRANSITION METAL TUNGSTATE

Номер: US20190060882A1
Принадлежит:

A hydroprocessing catalyst has been developed. The catalyst is a crystalline transition metal tungstate material or metal sulfides derived therefrom, or both. The hydroprocessing using the crystalline transition metal tungstate material may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking. 2. The crystalline transition metal tungstate material of wherein the crystalline transition metal tungstate material is present in a mixture with at least one binder and wherein the mixture comprises up to 25 wt % binder.3. The crystalline transition metal tungstate material of wherein the binder is selected from the group consisting of silicas claim 2 , aluminas claim 2 , silica-aluminas claim 2 , and mixtures thereof.4. The crystalline transition metal tungstate material of wherein M is nickel or cobalt.5. The crystalline transition metal tungstate material of wherein M is nickel.6. The crystalline transition metal tungstate material of wherein the crystalline transition metal tungstate material is sulfided.8. The method of wherein the recovering is by filtration or centrifugation.9. The method of further comprising adding a binder to the recovered crystalline transition metal tungstate material.10. The method of wherein the binder is selected from the group consisting of aluminas claim 9 , silicas claim 9 , alumina-silicas claim 9 , and mixtures thereof.11. The method of further comprising sulfiding the recovered crystalline transition metal tungstate material.12. The method of wherein the reacting is conducted under atmospheric pressure or autogenous pressure.13. The method of further comprising intermittent mixing during the reacting.14. The method of wherein the temperature is varied during the reacting.16. The process of wherein the conversion process is hydroprocessing.17. The process of wherein the conversion process is selected from the group ...

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28-02-2019 дата публикации

SILICA AEROGEL BLANKET FOR ULTRA-HIGH TEMPERATURE, METHOD FOR PRODUCING SAME, AND METHOD FOR CONSTRUCTING SAME

Номер: US20190062167A1
Автор: Kim Mi Ri, Lee Je Kyun
Принадлежит: LG CHEM, LTD.

The present invention relates to a silica aerogel blanket for ultra-high temperature, a method for producing the same, and a method for constructing the same. More specifically, the present invention provides a method for producing a silica aerogel blanket, the method capable of suppressing the generation of a bad odor during construction by including a step of heat treatment after producing a hydrophobic silica aerogel blanket so as to remove a volatile organic compound (VOC), a silica aerogel blanket produced thereby, and a method for constructing a silica aerogel blanket for ultra-high temperature, the method capable of suppressing the generation of a bad odor during the construction of the silica aerogel blanket produced by the above-mentioned production method on an ultra-high temperature piping equipment, and at the same time, preventing the loss of heat insulation performance due to moisture in the air. 1. A method for producing a silica aerogel blanket , the method comprising the steps of:1) preparing a silica sol by mixing a silica precursor, alcohol, and an acidic aqueous solution;2) producing a silica gel composite by adding a basic catalyst to the silica sol, and then depositing the silica sol added with the basic catalyst in a base material for blanket;3) producing a hydrophobic silica aerogel by aging, surface modifying, and drying the silica gel composite; and4) heat treating the hydrophobic silica aerogel.2. The method of claim 1 , wherein the acidic aqueous solution of Step 1) comprises one or more kinds of acid catalysts selected from the group consisting of nitric acid claim 1 , hydrochloric acid claim 1 , acetic acid claim 1 , sulfuric acid claim 1 , and hydrofluoric acid.3. The method of claim 1 , wherein the basic catalyst of Step 2) comprises one or more selected from the group consisting of ammonium hydroxide (NHOH) claim 1 , tetramethylammonium hydroxide (TMAH) claim 1 , tetraethylammonium hydroxide (TEAH) claim 1 , tetrapropylammonium ...

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07-03-2019 дата публикации

OXYGENATE REDUCTION CATALYST AND PROCESS

Номер: US20190070593A1
Принадлежит:

The invention provides a catalyst system and method for the deoxygenation of hydrocarbons, such as bio-oil, using a sulphide-sulfate or an oxide-carbonate (LDH) system. The invention extends to a pyrolysis process of a carbonaceous bio-mass wherein a first combustion zone is carried out in one or more combustion fluidised beds in which a particulate material including chemically looping deoxygenation catalyst particles is fluidised and heated, and a second pyrolysis zone carried out in one or more pyrolysis fluidised beds in which the hot particles, including the catalyst particles, heated in the combustion zone are used for pyrolysis of the bio-mass, said combustion zone being operated at a temperature of from 250° C. to 1100° C., typically around 900° C., and the pyrolysis zone being operated at a temperature of from 250° C. to 900° C., typically 450° C. to 600° C., said catalyst particles being oxygenated in the pyrolysis zone in the presence of oxygenates in the pyrolysis oil and regenerated in the combustion zone either by calcining to drive off the carbon oxides, such as CO, or by reduction to its form which is active for deoxygenation of the pyrolysis oil. 125-. (canceled)26. A hydrocarbon deoxygenation catalyst system comprising:a chemical looping catalytically active substance adapted to be oxidized in a presence of an oxygenate in a fluid hydrocarbon product or a fluid hydrocarbon-containing product, thereby reducing an amount of the oxygenate therein, wherein the oxidized chemical looping catalytically active substance is adapted to be at least partially regeneratable by either reducing under reducing conditions, or by calcining to release at least some of a captured oxygenate in a form of a carbonate, thereby returning the chemical looping catalytically active substance to an active state, wherein the chemical looping catalytically active substance is adapted for use on a solid catalyst support at a level of between 1% and 99% by mass.27. The system of ...

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05-03-2020 дата публикации

Method for producing benzimidazole derivative

Номер: US20200071295A1
Принадлежит: Sumitomo Dainippon Pharma Co Ltd

The present invention relates to a process to prepare a benzimidazole derivative useful as a medicament, an intermediate for preparing the medicament, and a process to prepare the intermediate.

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18-03-2021 дата публикации

PLATINUM-SULFUR-BASED SHELL CATALYST, PRODUCTION AND USE THEREOF IN THE DEHYDROGENATION OF HYDROCARBONS

Номер: US20210077984A1
Принадлежит:

The invention relates to the use of a supported, platinum-containing and sulfur-containing shell catalyst for the partial or complete dehydrogenation of perhydrogenated or partially hydrogenated cyclic hydrocarbons. The present invention also relates to a method for producing a platinum-containing and sulfur-containing shell catalyst and to a platinum-containing and sulfur-containing shell catalyst. The present invention further relates to a method for the partial or complete dehydrogenation of perhydrogenated or partially hydrogenated cyclic hydrocarbons. 2. The use as claimed in claim 1 , wherein the perhydrogenated or partly hydrogenated cyclic hydrocarbon is selected from the group consisting of cyclohexane claim 1 , methylcyclohexane claim 1 , decalin claim 1 , perhydrogenated or partly hydrogenated benzyltoluene claim 1 , perhydrogenated or partly hydrogenated N-alkylated carbazole claim 1 , especially perhydrogenated or partly hydrogenated N-ethylcarbazole claim 1 , and perhydrogenated or partly hydrogenated dibenzyltoluene and isomers thereof.3. The use as claimed in or claim 1 , wherein the dehydrogenation is performed continuously in a reactor selected from a fixed bed reactor claim 1 , a flow bed reactor or a fluidized bed reactor claim 1 , and preferably in a fixed bed reactor.4. The use as claimed in claim 1 , or claim 1 , wherein the dehydrogenation is effected at a temperature in the range from 200° C. to 400° C. claim 1 , more preferably at a temperature in the range from 230° C. to 330° C. claim 1 , especially at a temperature in the range from 260° C. to 310° C. claim 1 , and preferably at a pressure in the range of 1-5 bar claim 1 , more preferably in the range of 2-4 bar claim 1 , especially at a pressure of about 3 bar.5. The use as claimed in any of to claim 1 , wherein the shell catalyst has an outer shell including 85% by weight or more claim 1 , preferably 90% by weight or more claim 1 , especially 95% by weight or more claim 1 , of the ...

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30-03-2017 дата публикации

Hydrocarbon Conversion

Номер: US20170088490A1
Принадлежит:

The invention relates to the conversion of paraffinic hydrocarbon to oligomers of greater molecular weight and/or to aromatic hydrocarbon. The invention also relates to equipment and materials useful in such conversion, and to the use of such conversion for, e.g., natural gas upgrading. Corresponding olefinic hydrocarbon is produced from the paraffinic hydrocarbon in the presence of a dehydrogenation catalyst containing a catalytically active carbonaceous component. The corresponding olefinic hydrocarbon is then converted by oligomerization and/or dehydrocyclization in the presence of at least one molecular sieve catalyst. 1. A process for producing aromatics , comprising:{'sub': n+', 'm−, '(a) providing a feed which comprises ≧1 wt. % of a first hydrocarbon and further comprises a second hydrocarbon, wherein (i) the first hydrocarbon comprises C paraffinic hydrocarbon, (ii) the second hydrocarbon comprises C hydrocarbon, (iii) n is a positive integer ≧2 and m is a positive integer ≦n−1, and (iv) the feed has a first hydrocarbon:second hydrocarbon molar ratio in the range of from 0.001 to 100;'}{'sup': '2', '(b) providing a first multi-component catalyst, the first catalyst having dehydrogenation functionality and comprising (i) ≧10 wt. % of at least one inorganic oxide component having a surface area ≧10 m/g and a pore volume ≧0.1 ml/g, (ii) ≧0.01 wt. % of at least one catalytically active carbonaceous component, and (iii) ≧0.05 wt. % of at least one element selected from Groups 5-11 of the Periodic Table;'}(c) providing a second multi-component catalyst, the second catalyst having dehydrocyclization functionality and comprising ≧10 wt. % of a molecular sieve component and ≧0.005 wt. % of a dehydrogenation component comprising at least one element selected from Groups 3 to 13 of the Periodic Table;{'sub': n+', 'm−, "(d) reacting the feed in the presence of the first catalyst under catalytic dehydrogenation conditions effective for dehydrogenating ≧10 wt. % of the C ...

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02-04-2015 дата публикации

PROCESS FOR SYNTHESIS OF ALCOHOLS

Номер: US20150094510A1
Принадлежит: Haldor Topsoe A/S

Process and catalyst for upgrading gasoline comprising durene (1,2,4,5-tetramethylbenzene) and pseudodocumene, the process comprises hydroisomerization of durene (1,2,4,5-tetramethylbenzene) and pseudocumene (1,2,4-trimethylbenzene) contained in the gasoline in presence of a catalyst comprising a sulfided base metal supported on an acidic carrier, thereby converting durene (1,2,4,5-tetramethylbenzene) to isodurene (1,2,4,5-tetramethylbenzene) and prehnitene (1,2,3,4-tetramethylbenzene) and converting pseudocumene (1,2,4-trimethylbenzene) to mesitylene (1,3,5-trimethylbenzene). 1. A process for upgrading gasoline comprising durene (1 ,2 ,4 ,5-tetramethylbenzene) and pseudodocumene (1 ,2 ,4-trimethylbenzene) , the process comprises hydroisomerization of durene and pseudocumene contained in the gasoline in presence of hydrogen and a catalyst comprising a sulfided base metal supported on an acidic carrier , thereby converting durene (1 ,2 ,4 ,5-tetramethylbenzene) to isodurene (1 ,2 ,3 ,5-tetramethylbenzene) and prehnitene (1 ,2 ,3 ,4-tetramethylbenzene) and converting pseudocumene (1 ,2 ,4-trimethylbenzene) to mesitylene (1 ,3 ,5-trimethylbenzene).2. The process of claim 1 , wherein the sulfided metal in the catalyst comprises nickel.3. The process of claim 2 , wherein the content of nickel is 0.5 to 20 wt %.4. The process of claim 1 , wherein the acidic carrier comprises a zeolite.5. The process of claim 4 , wherein the zeolite has a Si02/A1203 ratio in the range of 15 to 300.6. The process of claim 4 , wherein the zeolite comprises ZSM-5.7. The process of claim 1 , wherein the acidic carrier further comprises alumina.8. The process of claim 1 , wherein the catalyst comprises sulfided nickel supported on a mixture of ZSM-5 and alumina.9. The process of claim 8 , wherein the catalyst is composed of 1-5 wt % nickel claim 8 , 50-70 wt % ZSM-5 and 50-30 wt % alumina binder.10. The process of claim 1 , comprising the further step of separating a light fraction from the ...

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26-06-2014 дата публикации

PHOTOCATALYTIC SYSTEM FOR THE REDUCTION OF CARBON DIOXIDE

Номер: US20140174906A1
Автор: LANDRY Daniel
Принадлежит: SUNPOWER TECHNOLOGIES LLC

A system and method employing sunlight energy for the reduction of carbon dioxide into methane and water are disclosed. Methane gas may then be stored for later use as fuel. The system and method may use inorganic capping agents that cap the surface of semiconductor nanocrystals to form photocatalytic capped colloidal nanocrystals, which may be deposited on a substrate and treated to form a photoactive material. The photoactive material may be employed in the system to harvest sunlight and produce energy necessary for carbon dioxide reduction. The system may also include elements necessary to collect and transfer methane, for subsequent transformation into electrical energy. 1. A photocatalytic capped colloidal nanocrystal , comprisingfirst and second semiconductor nanocrystals, formed as a nanorod, the first semiconductor nanocrystal nanorod regions lying at the ends of the nanorod, and the second semiconductor nanocrystal nanorod region disposed between the first semiconductor nanocrystal regions;a first inorganic capping agent overlying at least a portion of the first semiconductor nanocrystal; anda second inorganic capping agent overlying at least a portion of the second semiconductor nanocrystal.2. The photocatalytic capped colloidal nanocrystal of claim 1 , wherein the first semiconductor nanocrystal is Cu and the second semiconductor nanocrystal is ZnS.3. The photocatalytic capped colloidal nanocrystal of claim 1 , wherein the second semiconductor nanocrystal region is longer than each first semiconductor nanocrystal region.2. The photocatalytic capped colloidal nanocrystal of claim 1 , wherein the second inorganic capping agent is ReO.3. The photocatalytic capped colloidal nanocrystal of claim 1 , wherein the first inorganic capping agent is WO.4. A method for reducing carbon dioxide claim 1 , comprising:introducing carbon dioxide gas and hydrogen gas into a reaction vessel;shining light onto a photoactive material within the reaction vessel, the light ...

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12-05-2022 дата публикации

TAIL GAS UTILIZATION FOR MIXED ALCOHOLS PRODUCTION

Номер: US20220144734A1
Принадлежит:

It has been discovered that mixed-alcohol production can utilize the waste tail gas stream from the pressure-swing adsorption section of an industrial hydrogen plant. Some variations provide a process for producing mixed alcohols, comprising: obtaining a tail-gas stream from a methane-to-syngas unit (e.g., a steam methane reforming reactor); compressing the tail-gas stream; separating the tail-gas stream into at least a syngas stream, a CO-rich stream, and a CH-rich stream; introducing the syngas stream into a mixed-alcohol reactor operated at effective alcohol synthesis conditions in the presence of an alcohol-synthesis catalyst, thereby generated mixed alcohols; and purifying the mixed alcohols to generate a mixed-alcohol product. Other variations provide a process for producing clean syngas, comprising: obtaining a tail-gas stream from a methane-to-syngas unit; compressing the tail-gas stream; separating the tail-gas stream into at least a syngas stream, a CO-rich stream, and a CH-rich stream; and recovering a clean syngas product. 1. A process for producing mixed alcohols , said process comprising:{'sub': 2', '2', '4, '(a) obtaining a tail-gas stream from a methane-to-syngas unit, wherein said tail-gas stream comprises CO, CO, H, and CH;'}(b) compressing said tail-gas stream;{'sub': 2', '4, '(c) separating said tail-gas stream into at least a syngas stream, a CO-rich stream, and a CH-rich stream;'}(d) introducing said syngas stream into a mixed-alcohol reactor operated at effective alcohol synthesis conditions and in the presence of an alcohol-synthesis catalyst, thereby generated mixed alcohols and a reactor off-gas; and(e) optionally purifying said mixed alcohols to generate a mixed-alcohol product.2. The process of claim 1 , wherein said tail-gas stream is an output of a first pressure-swing adsorption unit.3. The process of claim 1 , wherein said CO-rich stream is compressed and used in enhanced oil recovery.4. The process of claim 1 , wherein said CO-rich ...

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02-04-2020 дата публикации

METHODS OF DEGRADING ORGANIC POLLUTANTS AND PREVENTING OR TREATING MICROBE USING Bi2S3-CdS PARTICLES

Номер: US20200102228A1
Принадлежит: Imam Abdulrahman Bin Faisal University

Methods of synthesizing BiS—CdS particles in the form of spheres as well as properties of these BiS—CdS particles are described. Methods of photocatalytic degradation of organic pollutants employing these BiS—CdS particles and methods of preventing or reducing microbial growth on a surface by applying these BiS—CdS particles in the form of a solution or an antimicrobial product onto the surface are also specified. 1. A method for degrading an organic pollutant , the method comprising:{'sub': 2', '3, 'contacting BiS—CdS particles with an aqueous solution comprising the organic pollutant to form a mixture;'}illuminating the mixture with a light at a wavelength in a range of 200-700 nm for 0.1-6 hours thereby degrading the organic pollutant; [{'sub': 2', '3, 'the BiS—CdS particles comprise bismuth(III) sulfide and cadmium(II) sulfide;'}, {'sub': 2', '3, 'the BiS—CdS particles are in the form of spheres; and'}, 'the organic pollutant is present in the aqueous solution at a concentration of 1-1,000 mg/L relative to a total volume of the aqueous solution., 'wherein2. The method of claim 1 , wherein an atomic ratio of bismuth to cadmium in the BiS—CdS particles is in a range of 0.5:1 to 4:1 claim 1 , and an atomic ratio of sulfur to bismuth in the BiS—CdS particles is in a range of 3:2 to 8:1.3. The method of claim 1 , wherein the BiS—CdS particles are in the form of spheres with an average diameter of 0.3-5 μm.4. The method of claim 1 , wherein the BiS—CdS particles have a BET surface area of 5-25 m/g claim 1 , a pore size of 10-50 nm claim 1 , and a pore volume of 0.02-0.2 cm/g.5. The method of claim 1 , wherein an amount of the BiS—CdS particles in the mixture is in a range of 0.1-10 g/L relative to a total volume of the mixture.6. The method of claim 1 , wherein at least 30% by mole of the organic pollutant is degraded within 2 hours of illuminating.7. The method of claim 1 , wherein the organic pollutant comprises methyl orange claim 1 , methyl green claim 1 , or both ...

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30-04-2015 дата публикации

Plasma-assisted nanofabrication of two-dimensional metal chalcogenide layers

Номер: US20150118487A1
Принадлежит: COLORADO SCHOOL OF MINES

The invention describes two methods for manufacturing metal dichalcogenide materials. The invention also includes a coated dichalcogenide substrate.

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03-05-2018 дата публикации

NANOSTRUCTURED PHOTOCATALYSTS AND DOPED WIDE-BANDGAP SEMICONDUCTORS

Номер: US20180117577A1
Принадлежит:

Photocatalysts for reduction of carbon dioxide and water are provided that can be tuned to produce certain reaction products, including hydrogen, alcohol, aldehyde, and/or hydrocarbon products. These photocatalysts can form artificial photosystems and can be incorporated into devices that reduce carbon dioxide and water for production of various fuels. Doped wide-bandgap semiconductor nanotubes are provided along with synthesis methods. A variety of optical, electronic and magnetic dopants (substitutional and interstitial, energetically shallow and deep) are incorporated into hollow nanotubes, ranging from a few dopants to heavily-doped semiconductors. The resulting wide-bandgap nanotubes, with desired electronic (p- or n-doped), optical (ultraviolet bandgap to infrared absorption in co-doped nanotubes), and magnetic (from paramagnetic to ferromagnetic) properties, can be used in photovoltaics, display technologies, photocatalysis, and spintronic applications. 1. A composition comprising uniformly doped wide-bandgap semiconductor nanotubes.2. The composition of claim 1 , wherein the uniformly doped wide-bandgap semiconductor nanotubes lack secondary phase diffraction peaks when subjected to energy dispersive x-ray spectroscopy.3. The composition of claim 1 , wherein the dopant is anionic.4. The composition of claim 1 , wherein the dopant is cationic.5. The composition of claim 1 , wherein the nanotubes are mono-doped.6. The composition of claim 1 , wherein the nanotubes are co-doped.7. The composition of claim 1 , wherein the nanotubes comprise titanium dioxide.8. The composition of claim 1 , wherein the nanotubes comprise tungsten oxide.9. The composition of claim 1 , wherein the nanotubes are n-type doped wide-bandgap semiconductor nanotubes.10. The composition of claim 1 , wherein the nanotubes are p-type doped wide-bandgap semiconductor nanotubes.11. The composition of claim 1 , wherein the nanotubes are doped with one of copper claim 1 , copper-nitrogen claim 1 ...

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31-07-2014 дата публикации

Artificial Photosynthetic System Using Photocatalyst

Номер: US20140209478A1
Автор: Daniel Landry
Принадлежит: SUNPOWER TECHNOLOGIES LLC

A photosynthetic system for splitting water to produce hydrogen and using the produced hydrogen for the reduction of carbon dioxide into methane is disclosed. The disclosed photosynthetic system employs photoactive materials that include photocatalytic capped colloidal nanocrystals within their composition, in order to harvest sunlight and obtain the energy necessary for water splitting and subsequent carbon dioxide reduction processes. The photosynthetic system may also include elements necessary to transfer water produced in the carbon dioxide reduction process, for subsequent use in water splitting process. The systems may also include elements necessary to store oxygen and collect and transfer methane, for subsequent transformation of methane into energy.

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02-05-2019 дата публикации

Preparation method of a visible-light-driven cc@sns2/sno2 composite catalyst, and application thereof

Номер: US20190126243A1
Автор: Dongyun Chen, Jianmei Lu
Принадлежит: SUZHOU UNIVERSITY

The present invention disclosed preparation method of a visible-light-driven CC@SnS 2 /SnO 2 composite catalyst, and application thereof, comprising the following steps: preparing CC@SnS 2 composite material in a solvent by using SnCl 4 .5H 2 O and C 2 H 5 NS as raw materials and carbon fiber cloth as a supporting material; calcining said CC@SnS 2 composite material to obtain the visible-light-driven CC@SnS 2 /SnO 2 composite catalyst. The present invention overcomes defects of the traditional methods of treating chromium-containing wastewater, including chemical precipitation, adsorption, ion exchange resin and electrolysis, and the photocatalytic technology can make full use of solar light source or artificial light source without adding adsorbent or reducing agent. In this case, the use of semiconductor photocatalyst to convert hexavalent chromium in chromium wastewater into less toxic and easily precipitated trivalent chromium greatly reduces the cost and energy consumption.

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31-07-2014 дата публикации

Photocatalyst for the Reduction of Carbon Dioxide

Номер: US20140213427A1
Автор: LANDRY Daniel
Принадлежит: SUNPOWER TECHNOLOGIES LLC

The present disclosure relates to a method and composition for forming photocatalytic capped colloidal nanocrystals which may include semiconductor nanocrystals and inorganic capping agents as photocatalysts. Photocatalytic capped colloidal nanocrystals may be deposited on a substrate and treated to form a photoactive material which may be employed in a plurality of photocatalytic energy conversion applications such as the photocatalytic reduction of carbon dioxide. Different semiconductor materials, shapes and sizes may be combined when forming photocatalytic capped colloidal nanocrystals, allowing band gaps to be tuned and expand the range of wavelengths of sunlight usable by the photoactive material. The disclosed photocatalytic capped colloidal nanocrystals, within the photoactive material, may also exhibit a higher efficiency of solar energy conversion process, derived from a higher surface area of the semiconductor nanocrystals within photocatalytic capped colloidal nanocrystals available for the absorption of sunlight and enhancement of charge carrier dynamics. 1. A photocatalytic material comprising:a colloidal semiconductor nanocrystal; anda photocatalytic capping agent that binds to a surface of the semicondutor nanocrystal, wherein the photocatalytic capping agent is an inorganic capping agent.2. The photocatalytic material of claim 1 , wherein the photocatalytic material is submerged in hydrogen for a carbon dioxide reduction process.3. The photocatalytic material of claim 1 , wherein the semiconductor nanocrystal comprises one or more of Ag claim 1 , Au claim 1 , Ru claim 1 , Rh claim 1 , Pt claim 1 , Pd claim 1 , Os claim 1 , Ir claim 1 , Ni claim 1 , Cu claim 1 , CdS claim 1 , Pt-tipped claim 1 , TiO claim 1 , Mn/ZnO claim 1 , ZnO claim 1 , CdSe claim 1 , SiO claim 1 , ZrO claim 1 , SnO claim 1 , WO claim 1 , MoO claim 1 , CeO claim 1 , ZnS claim 1 , WS claim 1 , MoS claim 1 , SiC claim 1 , GaP claim 1 , and Cu—Au.4. The photocatalytic material of ...

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26-05-2016 дата публикации

High surface area graphene-supported metal chalcogenide assembly

Номер: US20160145504A1

Disclosed here is a method for hydrocarbon conversion, comprising contacting at least one graphene-supported assembly with at least one hydrocarbon feedstock, wherein the graphene-supported assembly comprises (i) a three-dimensional network of graphene sheets crosslinked by covalent carbon bonds and (ii) at least one metal chalcogenide compound disposed on the graphene sheets, wherein the chalcogen of the metal chalcogenide compound is selected from S, Se and Te, and wherein the metal chalcogenide compound accounts for at least 20 wt. % of the graphene-supported assembly.

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10-06-2021 дата публикации

Visible light catalyst, preparation and application thereof

Номер: US20210170383A1
Автор: Beidou Xi, Jun Cui, Xiaosong HE

A visible light catalyst, its preparation method, a visible light catalyst activated persulfate system and its use. The visible light catalyst includes a carbon material, a transition metal compound and a coating material. The carbon material is conductive carbon material, and the transition metal compound is selected from one or more of transition metal oxides, transition metal sulfides, and acid or salt compounds containing a transition metal. The visible light catalyst has high visible light photocatalytic activity and performance of degrading organic pollutants and activating persulfate which can result in synergistically degrading degradation-resistant organic pollutants.

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15-09-2022 дата публикации

Catalyst Compositions Including Metal Chalcogenides, Processes for Forming the Catalyst Compositions, and Uses Thereof

Номер: US20220288576A1
Принадлежит:

Aspects of the present disclosure generally relate to catalyst compositions including metal chalcogenides, processes for producing such catalyst compositions, processes for enhancing catalytic active sites in such catalyst compositions, and uses of such catalyst compositions in, e.g., processes for producing conversion products. In an aspect, a process for forming a catalyst composition is provided. The process includes introducing an electrolyte material and an amphiphile material to a metal chalcogenide to form the catalyst composition. In another aspect, a catalyst composition is provided. The catalyst composition includes a metal chalcogenide, an electrolyte material, and an amphiphile material. Devices for hydrogen evolution reaction are also provided. 1. A process for forming a catalyst composition , comprising introducing an electrolyte material and an amphiphile material to a metal chalcogenide to form the catalyst composition.2. The process of claim 1 , further comprising introducing a voltage to the to the catalyst composition.3. The process of claim 1 , wherein a first amount of hydrogen atoms absorbed on the metal chalcogenide before introducing the electrolyte material and the amphiphile material is less than a second amount of hydrogen atoms absorbed on the metal chalcogenide after introducing the electrolyte material and the amphiphile material.4. The process of claim 1 , wherein the metal chalcogenide comprises a density of chalcogen atom vacancies from about 6% to about 30% claim 1 , as determined by x-ray photoelectron spectroscopy.5. The process of claim 1 , wherein:the electrolyte material comprises an acid; andthe amphiphile material comprises an anionic compound.6. The process of claim 5 , wherein the acid has a pKa of about 3 or less as determined by potentiometric titration.8. The process of claim 7 , wherein:M is selected from the group consisting of Mo, W, Nb, Ni, Fe, V, Cr, Mn, and combinations thereof; andE is selected from the group ...

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11-06-2015 дата публикации

METAL SULPHIDE-BASED COMPOSITE PHOTOCATALYST FOR PRODUCING HYDROGEN

Номер: US20150158017A1
Принадлежит:

The invention concerns a composition comprising a mixture of zinc sulphide (ZnS) and molybdenum sulphide (MoS), in which the Mo/Zn molar ratio is in the range 0.01 to 1.9. The invention also pertains to a process for its preparation as well as to its application in photocatalysis and more particularly to its application in photocatalysis for the production of dihydrogen from water (HO) and/or hydrogen sulphide (HS) and/or any other source of protons in the presence of a source emitting in the ultraviolet and/or visible spectrum. 1. A composition comprising a mixture of zinc sulphide and molybdenum sulphide , in which the Mo/Zn molar ratio is in the range 0.01 to 1.9.2. The composition according to claim 1 , in which the Mo/Zn molar ratio is in the range 0.5 to 1.5.3. The composition according to claim 1 , in which the mixture of zinc sulphide and molybdenum sulphide is in the form of nanoparticles less than 1 μm in size.4. The composition according to claim 1 , further comprising at least one metal from group VIII and/or group D3 in its metallic or sulphide form.5. The composition according to claim 4 , in which the metal from group VIII and/or group D3 is selected from platinum claim 4 , palladium claim 4 , gold claim 4 , nickel claim 4 , cobalt claim 4 , ruthenium or rhodium.6. The composition according to claim 4 , in which the quantity of metal from group VIII and/or group D3 is in the range 0.01% to 5% by weight of metal on the composition.7. A process for the preparation of the composition according to claim 1 , comprising the following steps:a) precipitating a molybdenum precursor in the presence of a sulphur-containing compound and zinc sulphide in a solvent comprising a polyol at a temperature in the range 150° C. to 250° C., in order to obtain a solution containing a composition comprising a mixture of a precipitate of zinc sulphide and a precipitate of molybdenum sulphide;b) separating the composition obtained in step a) from the solution, then optionally ...

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01-06-2017 дата публикации

NANOCATALYST COMPOSITION, METHOD FOR MAKING NANOCATALYST COMPOSITION AND HYDROCONVERSION PROCESS USING SAME

Номер: US20170152446A1
Принадлежит: Intevep, S.A.

A method for making a nanocatalyst includes the steps of forming a mixture of a catalyst precursor, and a crude oil media, wherein the catalyst precursor is insoluble in the oil media, then heating the mixture in the presence of a stability agent, thereby liberating the catalyst particles from the precursor while the stabilizing agent prevents growth of the catalyst particle so that nanocatalyst particles form and are maintained in the oil media. The resulting catalyst composition as well as a hydroconversion process using the catalyst are also disclosed. 1. A method for making a nanocatalyst , comprising the steps of:forming a mixture of an oil-insoluble catalyst precursor salt, and a crude oil media; andheating the mixture in the presence of a stabilizing agent whereby catalyst particles are liberated from the precursor salt and whereby the stabilizing agent prevents growth of the catalyst particle so as to form nanocatalyst particles in the oil media.2. The process of claim 1 , wherein the heating step comprises heating the mixture from ambient conditions to a temperature of between about 100° C. and about 350° C.3. The process of claim 1 , wherein the heating step comprises heating the mixture at a rate of between 0.5 and 2° C. per minute.4. The process of claim 1 , wherein the heating step is carried out at a pressure of between 300 and 600 psig.5. The process of claim 1 , wherein the heating step is carried out for a period of time of between 6 and 24 hours.6. The process of claim 1 , wherein the heating step forms a dispersion of the nanocatalyst particles in the crude oil media claim 1 , and further comprising the step of allowing the dispersion to cool to ambient conditions.7. The process of claim 1 , wherein the formed nanocatalyst particles are selected from the group consisting of metals of groups VIB claim 1 , VIIIB claim 1 , IB claim 1 , IIB and IIA of the periodic table of elements claim 1 , and combinations thereof.8. The process of claim 7 , wherein ...

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08-06-2017 дата публикации

Photochemical Processes and Compositions for Methane Reforming Using Transition Metal Chalcogenide Photocatalysts

Номер: US20170158502A1
Принадлежит: University of Texas System

The present invention provides a transition metal chalcogenide photocatalyst, a reactor using the transition metal chalcogenide photocatalyst, and methods of making and using a transition metal chalcogenide photocatalyst for reforming CH 4 with CO 2 .

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24-06-2021 дата публикации

OXIDATIVE DEHYDROGENATION OF ALKANES TO ALKENES USING SULFUR AS AN OXIDANT

Номер: US20210188741A1
Принадлежит:

The present disclosure provides a method for the oxidative dehydrogenation of an alkane, e.g., ethane, propane, etc. In embodiments, a method for oxidative dehydrogenation of an alkane comprises exposing a gas comprising an alkane having 2 or more carbons to elemental sulfur vapor at an elevated reaction temperature and for a period of time to convert the alkane to one or more products via oxidative dehydrogenation, the one or more products comprising a primary alkene. 1. A method for oxidative dehydrogenation of an alkane , the method comprising exposing a gas comprising an alkane having 2 or more carbons to elemental sulfur vapor at an elevated reaction temperature and for a period of time to convert the alkane to one or more products via oxidative dehydrogenation , the one or more products comprising a primary alkene.2. The method of claim 1 , wherein the exposure and conversion occur in the absence of a catalyst.3. The method of claim 2 , wherein the exposure and conversion occur in the absence of Oand in the absence of an oxygen-containing compound in the gas.4. The method of claim 1 , wherein the exposure and conversion occur in the presence of a catalyst.5. The method of claim 4 , wherein the catalyst is formed by exposing a precatalyst to Sand HS at an elevated temperature and for an activation time.6. The method of claim 5 , further comprising forming the catalyst from the precatalyst claim 5 , in situ claim 5 , prior to exposure to the gas comprising the alkane.7. The method of claim 5 , wherein the elevated temperature in is the range of from 600° C. to 1000° C. and the activation time is in the range of from 1 to 10 hours.8. The method of claim 4 , wherein the exposure and conversion occur in the absence of Oand in the absence of an oxygen-containing compound in the gas.9. The method of claim 5 , wherein the precatalyst is a supported transition metal oxide.10. The method of claim 9 , wherein the supported transition metal oxide is vanadium oxide on a ...

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01-07-2021 дата публикации

KITS COMPRISING CONTAINERS WITH AT LEAST ONE SOLID CATALYTICALLY ACTIVE COMPOUND, AND THEIR USES IN SOLID STATE REACTION

Номер: US20210197181A1

Subject matter of the present invention are kits comprising containers with at least one solid catalytically active compound, their uses in processes for simulating and predicting the transformation of a compound that is preferably a solid active pharmaceutical ingredient (API), preferably an API in combination with an excipient, in a shortened time span, into the respective degradation product(s). 1. Kit comprising the following components:Container comprising a catalyst that is 3-15% (w/w) sulfuric acid or chlorosulfonic acid absorbed on silica gel 60 (70-230 mesh), preferably 3-10% (w/w) sulfuric acid or chlorosulfonic acid absorbed on silica gel, more preferably about 5% (w/w) sulfuric acid or chlorosulfonic acid on silica gel, and/orContainer comprising a catalyst that is 3-15% (w/w) KOH or NaOH absorbed on silica gel or alox, preferably 3-10% (w/w) KOH or NaOH absorbed on silica gel or alox, more preferably about 5% (w/w) KOH or NaOH on silica gel or alox, and{'sub': 4', '4', '4, 'Container comprising a catalyst that is 3-15% (w/w) KMnOabsorbed on silica gel or alox, preferably 3-10% (w/w) KMnOabsorbed on silica gel or alox, more preferably about 5% (w/w) KMnOon silica gel or alox, and'}Optionally a container comprising a neutral catalyst that is pure silica gel 60 (70-230 mesh) or that is pure alox.2. Kit according to comprising the following components:Container comprising a catalyst that is 3-15% (w/w) sulfuric acid or chlorosulfonic acid absorbed on silica gel 60 (70-230 mesh), preferably 3-10% (w/w) sulfuric acid or chlorosulfonic acid absorbed on silica gel, more preferably about 5% (w/w) sulfuric acid or chlorosulfonic acid on silica gel, andContainer comprising a catalyst that is 3-15% (w/w) KOH or NaOH absorbed on silica gel or alox, preferably 3-10% (w/w) KOH or NaOH absorbed on silica gel or alox, more preferably about 5% (w/w) KOH or NaOH on silica gel or alox, and{'sub': 4', '4', '4, 'Container comprising a catalyst that is 3-15% (w/w) ...

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18-09-2014 дата публикации

Method for Increasing Efficiency of Semiconductor Photocatalysts

Номер: US20140262806A1
Автор: Travis Jennings
Принадлежит: SUNPOWER TECHNOLOGIES LLC

A method and composition for producing a photoactive material including photocatalytic capped colloidal nanocrystals (PCCN) and plasmonic nanoparticles are disclosed. The PCCN may include a semiconductor nanocrystal synthesis and an exchange of organic capping agents with inorganic capping agents. Additionally, the PCCN may be deposited between the plasmonic nanoparticles, and may act as photocatalysts for redox reactions. The photoactive material may be used in a plurality of photocatalytic energy conversion applications, such as water splitting and CO 2 reduction. By combining different semiconductor materials for PCCN and plasmonic nanoparticles, and by changing their shapes and sizes, band gaps may be tuned to expand the range of wavelengths of sunlight usable by the photoactive material. Higher light harvesting and energy conversion efficiency may be achieved.

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28-05-2020 дата публикации

A method using photocatalytic electrode coupled with microbial fuel cell to promote treatment of coking wastewater

Номер: US20200165148A1
Автор: Jing Shi, Jing Zhou, Lifen Liu
Принадлежит: Dalian University of Technology

A method of promoting the treatment of coking wastewater using photocatalytic electrode coupled with microbial fuel cellin the technical field of coking wastewater treatment, energy-saving and resource utilization. La-ZnIn2S4/RGO/BiVO4 and silica sol were fixed and coated on stainless steel mesh to form conductive catalytic composite membrane electrode. HSO3−was added to coking wastewater. Graphite Carbon rods are inserted into the anodic chamber with microorganisms and connected the cathode with wires to form circuit loops. Halogen tungsten lamp was applied as light source to act on the catalytic electrode, forming a coupled system with photocatalytic electrode and microbial fuel cell for treating coking wastewater. The effects of La-ZnIn2S4/RGO/BiVO4 catalysts with different RGO contents on the catalytic degradation of coking wastewater were realized, and the effects of NaHSO3 and Na2SO4 solutions at the same concentration on the degradation of coking wastewater were also realized.

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30-06-2016 дата публикации

PHOTOCATALYTIC DEGRADATION OF PHARMACEUTICAL DRUGS AND DYES USING VISIBLE ACTIVE BIOX PHOTOCATALYST

Номер: US20160185615A1
Принадлежит:

Provided is a visible active photocatalyst of formula BiOX wherein X=P or S and process of preparation and use thereof. Use of the catalyst is demonstrated in the photocatalytic degradation of pharmaceutical drug pollutants and pollutant dyes using solar radiation or artificial radiation. 1. A visible active photocatalyst active in the visible and UV regions of the electromagnetic spectrum , of formula BiOX wherein X=P or S , said catalyst active for degradation of an organic compound.2. The visible active photocatalyst according to claim 1 , wherein the photocatalyst is selected from the group consisting of BiOS and BiOP.3. The visible active photocatalyst according to in porous particle form.4. The visible active photocatalyst according to claim 3 , wherein the photocatalyst is BiOS particles having a size in the range of from 80 nm to 240 nm claim 3 , and a surface area in the range of 100 to 110.2 m/g.5. The visible active photocatalyst according to claim 3 , wherein a BiOS photocatalyst has an average pore size of 3.95 nm and an average pore volume of 0.109 cm/g.6. A process for the preparation of visible active photocatalyst active in the visible and UV regions of the electromagnetic spectrum claim 3 , of formula BiOX wherein X=P or S claim 3 , said process comprising steps of:(a) adding bismuth (III) oxide to ethanol to form a mixture;(b) stirring the mixture of step (a) and adding concentrated sulfuric acid or phosphoric acid at 40° C. to form a reaction mixture;(c) sonicating the reaction mixture of step (b) for 1 hr; and(d) calcining the sonicated product of (c) at 500° C. for 12 hrs. to produce the photocatalyst.7. The process of wherein the product of step (c) is washed with ethanol or deionized water or alternately with ethanol and with deionized water and vacuum dried before calcination.8. A process of degrading at least one organic pollutant comprising: exposing the pollutant in liquid medium claim 6 , the pollutant in a concentration range of 1-1000 ...

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28-06-2018 дата публикации

Process for removing oxygenates from hydrocarbon streams

Номер: US20180179454A1
Автор: Jan Dierickx
Принадлежит: Fluor Technologies Corp

A system for removing oxygenates from a hydrocarbon stream includes a caustic wash unit comprising a plurality of caustic wash loops, and a hydrogenation reactor. The hydrogenation reactor is configured to receive a first gaseous stream from a first caustic wash loop of the plurality of caustic wash loops and pass a second gaseous stream from the hydrogenation reactor to a second caustic wash loop of the plurality of caustic wash loops, wherein the hydrogenation reactor comprises a sulfided catalyst.

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13-06-2019 дата публикации

ANTI-CONTAMINATION CONTACT LENS PACKAGE AND METHOD FOR MANUFACTURING THE SAME

Номер: US20190177063A1
Принадлежит:

An anti-contamination contact lens package includes a substrate and a photocatalyst film layer formed on the substrate. A method for manufacturing the anti-contamination contact lens package is also disclosed. 1. An anti-contamination contact lens package , comprising:a substrate; anda photocatalyst film layer being formed on the substrate.2. The anti-contamination contact lens package of claim 1 , wherein the substrate includes an inner surface claim 1 , an outer surface claim 1 , and a top surface claim 1 , the top surface connects the inner surface and the outer surface claim 1 , the inner surface is lower than the top surface; wherein the photocatalyst film layer is formed on the inner surface claim 1 , the outer surface claim 1 , and the top surface.3. The anti-contamination contact lens package of claim 1 , wherein the substrate is a material selected from a group consisting of polypropylene claim 1 , polyethylene claim 1 , polycarbonate claim 1 , polystyrene claim 1 , and a combination thereof.4. The anti-contamination contact lens package of claim 1 , wherein material of the photocatalyst film layer can be selected from a group consisting of titanium dioxide claim 1 , zinc oxide claim 1 , cadmium sulfide claim 1 , tungsten trioxide claim 1 , iron trioxide claim 1 , lead sulphide claim 1 , stannic dioxide claim 1 , zinc sulfide claim 1 , strontium titanate claim 1 , silicon dioxide claim 1 , and a combination thereof.5. The anti-contamination contact lens package of claim 1 , wherein a thickness of the photocatalyst film layer is in a range from 0.003 micrometers to 86 micrometers.6. A method for manufacturing an anti-contamination contact lens package claim 1 , comprising:providing a substrate; andforming a photocatalyst film layer on the substrate.7. The method of claim 6 , wherein the substrate is made by injection molding.8. The method of claim 6 , wherein the substrate includes an inner surface claim 6 , an outer surface claim 6 , and a top surface claim ...

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18-09-2014 дата публикации

CATALYSTS FOR HYDROCARBON REFORMING

Номер: US20140272642A1
Автор: Budge John R.
Принадлежит: LG Fuel Cell Systems, Inc.

In some examples, a method for treating a reforming catalyst, the method comprising heating a catalyst metal used for reforming hydrocarbon in a reducing gas mixture environment. The reducing gas mixture comprises hydrogen and at least one sulfur-containing compound. The at least one sulfur-containing compound includes one or more of hydrogen sulfide, carbonyl sulfide, carbonyl disulfide and organic sulfur-containing compounds such as thiophenes, thiophanes, sulfides (RSH), disulfides (RSR′), tri-sulfides (RSR′) and mercaptans (RSR′). 1. A method for treating a reforming catalyst , the method comprising heating a catalyst metal used for reforming hydrocarbon in a reducing gas mixture environment , wherein the reducing gas mixture comprises hydrogen and at least one sulfur-containing compound , wherein the at least one sulfur-containing compound includes one or more of hydrogen sulfide , carbonyl sulfide , carbonyl disulfide and organic sulfur-containing compounds such as thiophenes , thiophanes , sulfides (RSH) , disulfides (RSR′) , tri-sulfides (RSR′) and mercaptans (RSR′).2. The method of claim 1 , wherein the catalyst metal is treated with a dose of sulfur during treatment such that catalyst performance is stabilized without substantially negatively impacting activity of the catalyst metal.3. The method of claim 1 , wherein the heating the catalyst metal comprises heating the catalyst metal to a temperature between approximately 350 to 1 claim 1 ,200 degrees Celsius.4. The method of claim 1 , further comprising reforming hydrocarbons via a reformer with the catalyst metal to produce hydrogen.5. The method of claim 4 , wherein reforming hydrocarbons comprises steam reforming.6. The method of claim 4 , further comprising supplying the hydrogen to the fuel side of a solid oxide fuel cell stack.7. The method of claim 4 , wherein the at least one sulfur compound is periodically added to a feed stream of the reformer while reforming the hydrocarbons.8. The method of ...

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04-06-2020 дата публикации

METHODS OF PRODUCING 1,3-BUTADIENE FROM ETHYLENE AND SULFUR

Номер: US20200172451A1
Принадлежит:

Methods, catalysts, and systems for the production of 1,3-butadiene from a reaction mixture including ethylene and gaseous sulfur are described. 1. A method of producing 1 ,3-butadiene (CH) from ethylene (CH) and elemental sulfur gas (S(g)) , the method comprising:{'sub': 2', '4, '(a) obtaining a reaction mixture comprising CHand S(g); and'}{'sub': 4', '6, '(b) contacting the reaction mixture with a catalyst under conditions sufficient to produce a product stream comprising CH.'}2. The method of claim 1 , wherein the reaction temperature in step (b) is at least 200° C.3. The method of claim 1 , wherein the reaction pressure in step (b) is 0.1 MPa to 5.0 MPa.4. The method of claim 1 , wherein step (b) uses a gas hourly space velocity (GHSV) of 500 to 100 claim 1 ,000 h claim 1 , 1000 to 50 claim 1 ,000 hor 8 claim 1 ,000 hto 15 claim 1 ,000 h.5. The method of claim 1 , wherein the reaction mixture comprises a CH:S(g) molar ratio of 1:1 to 20:1.62. The method of claim 1 , wherein the product stream further comprises hydrogen sulfide gas HS(g) or carbon disulfide gas (C(g)) claim 1 , or both.7. The method of claim 1 , wherein the reaction mixture comprises methane or other gaseous hydrocarbons.8. The method of claim 1 , wherein the catalyst comprises a member selected from the group consisting of a metal claim 1 , a metal sulfide claim 1 , a metal oxysulfide claim 1 , a metal oxide claim 1 , a lanthanide claim 1 , or a lanthanide oxide claim 1 , or any combination thereof.9. The method of claim 8 , wherein the metal claim 8 , the metal sulfide claim 8 , the metal oxysulfide claim 8 , or the metal oxide comprises a metal from Columns 2-12 of the Periodic Table claim 8 , or any combination thereof.10. The method of claim 8 , wherein the lanthanide or the lanthanide oxide comprises a member selected from the group consisting of lanthanum (La) claim 8 , cerium (Ce) claim 8 , praseodymium (Pr) claim 8 , neodymium (Nd) claim 8 , samarium (Sm) claim 8 , europium (Eu) claim 8 ...

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05-07-2018 дата публикации

Template-Assisted Synthesis of 2D Nanosheets Using Nanoparticle Templates

Номер: US20180186653A1
Принадлежит: Nanoco 2D Materials Ltd

A template-assisted method for the synthesis of 2D nanosheets comprises growing a 2D material on the surface of a nanoparticle substrate that acts as a template for nanosheet growth. The 2D nanosheets may then be released from the template surface, e.g. via chemical intercalation and exfoliation, purified, and the templates may be reused.

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20-06-2019 дата публикации

A Short Channel Ordered Mesoporous Carbon Loaded Indium Cobalt Sulfide and Indium Nickel Sulfide Ternary Composite Photocatalyst, the Preparation Method Thereof and the Use Thereof

Номер: US20190184380A1
Принадлежит:

A short channel ordered mesoporous carbon loaded indium cobalt sulfide and indium nickel sulfide ternary composite photocatalyst, and a preparation method and application thereof. The short channel ordered mesoporous carbon loaded indium cobalt sulfide and indium nickel sulfide ternary composite photocatalyst is prepared by mixing pretreated short channel mesoporous carbon with cobalt salt, nickel salt, indium salt and reducing agent with a hydrothermal reaction. The short channel ordered mesoporous carbon is obtained by calcining a short channel ordered mesoporous silica and a carbon source under the protection of nitrogen, wherein the short channel ordered mesoporous silica is prepared by carrying out reactions of sol-gel-hydrothermal-calcination sequentially using a mixture of a surfactant, a hydrochloric acid solution, ammonium fluoride and tetraethyl orthosilicate. The photocatalyst has strong adsorption and visible light catalytic activity on VOCs, and can effectively adsorb and decompose the enriched VOCs in situ on the surface of the catalyst. 1. A preparation method of a short channel ordered mesoporous carbon loaded indium cobalt sulfide and indium nickel sulfide ternary composite photocatalyst , wherein the preparation method comprises the following steps:S1. adding 0.1-10 g surfactant to 10-120 mL water and concentrated hydrochloric acid solution with a volume ratio of 1-20:1 and stirring at 30-90° C. for 0.5-24 h to obtain a mixed solution A;S2. adding 0.01-0.1 g ammonium fluoride to the mixed solution A obtained in step S1, stirring for 0.5-60 min, then adding 5-50 mL mixed solution of alkane and tetraethyl orthosilicate with a volume ratio of 1-10:1 and stirring at 30-90° C. for 2-72 h to obtain a mixed solution B;S3. loading the mixed solution B obtained in step S2 into a 25-200 mL polytetrafluoroethylene (PTFE) vessel to conduct a hydrothermal reaction at 60-250° C. for 2-72 h; after cooling in the PTFE vessel, collecting the lower layer sediment ...

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20-06-2019 дата публикации

Highly active quaternary metallic materials using short-chain alkyl quaternary ammonium compounds

Номер: US20190185344A1
Автор: Wei Pan, Zara Osman
Принадлежит: UOP LLC

A highly active quaternary mixed transition metal oxide material has been developed. The material may be sulfided to generate metal sulfides which are used as a catalyst in a conversion process such as hydroprocessing. The hydroprocessing may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

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20-06-2019 дата публикации

OXIDATION CATALYST COMPRISING SULFUR COMPOUND

Номер: US20190186314A1
Принадлежит:

A diesel oxidation catalyst article is provided, which includes a substrate carrier having a plurality of channels adapted for gas flow and a catalyst composition positioned to contact an exhaust gas passing through each channel. The catalyst composition includes a platinum (Pt) component and a sulfur (S)-containing component impregnated onto a refractory metal oxide support and is effective to abate hydrocarbon and carbon monoxide, as well as oxidize NO to NOin the exhaust gas. Methods of making and using the catalyst article are also provided, as well as emission treatment systems comprising the catalyst article. 1. A catalyst article for abatement of exhaust gas emissions from an engine comprising:a substrate carrier having a plurality of channels adapted for gas flow and a catalyst composition positioned to contact an exhaust gas passing through each channel,wherein the catalyst composition comprises a platinum (Pt) component and a sulfur (S)-containing component impregnated onto a refractory metal oxide support; and{'sub': '2', 'wherein the catalyst composition is effective to abate hydrocarbon and carbon monoxide, and to oxidize NO to NOin the exhaust gas.'}2. The catalyst article of claim 1 , wherein the Pt component and the sulfur-containing component are present in a Pt:S molar ratio in a range of about 1:1 to about 1:5 claim 1 , and wherein the sulfur-containing component is calculated as sulfur dioxide (SO).3. The catalyst article of claim 1 , wherein the catalyst composition is substantially free of palladium.4. The catalyst article of claim 1 , wherein the catalyst composition further comprises a zeolite.5. The catalyst article of claim 1 , wherein the sulfur-containing component claim 1 , measured as sulfur dioxide (SO) claim 1 , is present in an amount in the range of about 2 g/ftto about 250 g/ftand the Pt component is present in an amount in the range of about 10 g/ftto about 200 g/ft.6. The catalyst article of claim 1 , wherein the sulfur- ...

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25-09-2014 дата публикации

Method of increasing the thickness of colloidal nanosheets and materials consisting of said nanosheets

Номер: US20140287237A1
Автор: Benoît MAHLER
Принадлежит: NEXDOT

A process of growth in the thickness of at least one facet of a colloidal inorganic sheet. By sheet is meant a structure having at least one dimension, the thickness, of nanometric size and lateral dimensions great compared to the thickness, typically more than 5 times the thickness. By homostructured is meant a material of homogeneous composition in the thickness and by heterostructured is meant a material of heterogeneous composition in the thickness. The process allows the deposition of at least one monolayer of atoms on at least one inorganic colloidal sheet, this monolayer being constituted of atoms of the type of those contained or not in the sheet. Homostructured and heterostructured materials resulting from such process as well as the applications of the materials are also described.

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30-07-2015 дата публикации

PROCESS FOR PREPARING HYDROCRACKING CATALYST

Номер: US20150209772A1
Принадлежит: SHELL OIL COMPANY

Process for preparing a sulphided hydrocracking catalyst comprising the steps of (a) treating an amorphous silica alumina carrier with one or more Group VIB metal components, one or more Group VIII metal components and a C-Cpolyhydric compound, (b) drying the treated catalyst carrier at a temperature of at most 200° C. to form an impregnated carrier, and (c) sulphiding the impregnated carrier to obtain a sulphided catalyst. 1. The process for preparing a sulphided hydrocracking catalyst comprising the steps of{'sub': 3', '12, '(a) treating an amorphous silica alumina carrier with one or more Group VIB metal components, one or more Group VIII metal components and a C-Cpolyhydric compound,'}(b) drying the treated catalyst carrier at a temperature of at most 200° C. to form an impregnated carrier, and(c) sulphiding the impregnated carrier to obtain a sulphided catalyst.2. The process according to claim 1 , wherein the C-Cpolyhydric compound is present in the sulphided catalyst in an amount of 3-30 wt %.3. The process according to or claim 1 , wherein the carrier further comprises a zeolite.4. The process according to claim 3 , wherein the carrier comprises an amount of 1 to 10 wt % of zeolite claim 3 , based on total weight of the carrier.5. The process according to claim 1 , wherein the C-Cpolyhydric compound is a sugar claim 1 , a sugar alcohol and/or a sugar acid.6. The process according to claim 5 , wherein the C-Cpolyhydric compound is sucrose and/or gluconic acid.7. A process for hydrocracking a hydrocarbon stream comprising contacting the hydrocarbon stream in the presence of hydrogen with catalyst prepared by a process according to .8. The process according to claim 7 , in which the catalyst is part of a stack of multiple catalyst beds wherein the other catalyst(s) in the stack is (are) alumina-based catalysts.9. The process according to claim 8 , wherein the catalyst prepared by a process is the bottom bed catalyst.10. The process according to claim 9 , ...

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18-06-2020 дата публикации

AMMONIA-FREE SYNTHESIS FOR AL OR SI BASED MULTIMETALLIC MATERIALS

Номер: US20200188889A1
Автор: Osman Zara, Pan Wei
Принадлежит:

A highly active quaternary mixed transition metal oxide material has been developed. The material may be sulfided to generate metal sulfides which are used as a catalyst in a conversion process such as hydroprocessing. The hydroprocessing may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking. 2. The mixed transition metal oxide material of wherein the mixed transition metal oxide material is present in a mixture with at least one binder and wherein the mixture comprises up to 80 wt % binder.3. The mixed transition metal oxide material of wherein the binder is selected from silicas claim 2 , aluminas claim 2 , silica-aluminas claim 2 , titanias claim 2 , zirconias claim 2 , natural clays claim 2 , synthetic clays claim 2 , and mixtures thereof.4. The mixed transition metal oxide material of wherein Mis Zr claim 1 , Mn claim 1 , Cu claim 1 , Zn claim 1 , or any mixture thereof.5. The mixed transition metal oxide material of wherein Mis Fe claim 1 , Co claim 1 , Ni claim 1 , or any mixture thereof.6. The mixed transition metal oxide material of wherein Mis Cr claim 1 , Mo claim 1 , or W.7. The mixed transition metal oxide material of wherein Mis Cr claim 1 , Mo claim 1 , or W and is different from M.8. The mixed transition metal oxide material of wherein the novel mixed transition metal oxide material is sulfided.10. The method of further comprising adding a binder to the reaction mixture or to the recovered mixed transition metal oxide material.11. The method of wherein the binder is selected from aluminas claim 10 , silicas claim 10 , alumina-silicas claim 10 , titanias claim 10 , zirconias claim 10 , natural clays claim 10 , synthetic clays claim 10 , and mixtures thereof.12. The method of further comprising sulfiding at least a portion of the recovered mixed transition metal oxide material.13. The method of wherein the reacting is ...

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04-08-2016 дата публикации

DESULFURIZATION PROCESS AND DESULFURIZER

Номер: US20160222308A1
Принадлежит:

A desulfurization process includes desulfurizing a hydrocarbon fuel using a desulfurizing agent including a support, nickel sulfide on the support, and zinc oxide. The desulfurizing agent is heated to 250° C. or more. 1. A desulfurization process comprising:desulfurizing a hydrocarbon fuel using a desulfurizing agent including a support, nickel sulfide on the support, and zinc oxide, whereinthe desulfurizing agent is heated to 250° C. or more.2. The desulfurization process according to claim 1 , wherein the support is alumina.3. The desulfurization process according to claim 1 , wherein the nickel sulfide is prepared through sulfurization of nickel oxide held on the support.4. The desulfurization process according to claim 1 , wherein the desulfurizing agent is heated to 250° C. or more and 450° C. or less.5. A desulfurizer comprising:a desulfurizing agent to remove a sulfur compound from a hydrocarbon fuel, the desulfurizing agent including a support, nickel sulfide on the support, and zinc oxide, whereinthe desulfurizing agent has been heated to 250° C. or more.6. The desulfurizer according to claim 5 , further comprising:a reactor and first and second catalyst layers in the reactor, the first and second catalyst layers containing a predetermined size of the nickel sulfide catalyst particles and a predetermined size of the zinc oxide particles, respectively, and arranged in this order from upstream in the direction of flow of the hydrocarbon fuel.7. The desulfurizer according to claim 5 , further comprising:a reactor mix-loaded with a predetermined size of the nickel sulfide catalyst particles and a predetermined size of the zinc oxide particles. 1. Technical FieldThe present disclosure relates to a desulfurization process and a desulfurizer.2. Description of the Related ArtOffering high power-generation and overall efficiency, fuel cell cogeneration systems (hereinafter simply referred to as “fuel cell systems”) have been receiving attention as generators for ...

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12-08-2021 дата публикации

Systems, methods and materials for hydrogen sulfide conversion

Номер: US20210245095A1
Принадлежит: Ohio State Innovation Foundation

Systems and methods use bimetallic alloy particles for converting hydrogen sulfide (H 2 S) to hydrogen (H 2 ) and sulfur (S), typically during multiple operations. In a first operation, metal alloy composite particles can be converted to a composite metal sulfide. In a second operation, composite metal sulfide from the first operation can be regenerated back to the metal alloy composite particle using an inert gas stream. Pure, or substantially pure, sulfur can also be generated during the second operation.

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02-07-2020 дата публикации

Synthesis of furan acids from xylonic acid

Номер: US20200207731A1
Автор: Thomas David
Принадлежит:

According to an example aspect of the present invention, there is provided a synthesis method for producing furoic acid from a monoacid containing five carbons in the presence of pressure, heat, solvent and catalyst. 1. A method for producing furoic acid and/or an ester thereof comprising mixing in a pressurized reaction vessel a monoacid comprising five carbon atoms or an ester thereof , an alcohol solvent , and a catalyst comprising a precious metal catalyst or a zeolite catalyst at a reaction temperature between 150 and 250° C. for a pre-determined reaction time to form a solution comprising the furoic acid and/or the ester thereof.2. The method according to claim 1 , wherein the reaction time is between 2 to 36 hours.3. The method according to claim 1 , wherein the method comprises:charging the monoacid and/or ester thereof to the pressurized reaction vessel together with the alcohol solvent and the catalyst to form a reaction mixture,pressurising the reaction vessel with hydrogen, air or inert gas to a pressure between 5 to 15 bars,heating the reaction mixture to temperature between 150 and 230° C. in said pressurized reaction vessel,maintaining the temperature in the pressurized reaction vessel for 0.5 to 36 hours,recovering the furoic acid and/or ester thereof from the reaction mixture.4. The method according to claim 1 , wherein the monoacid is xylonic acid.5. The method according to claim 1 , wherein the reaction temperature is between 150 to 165° C.6. The method according to claim 1 , wherein the solvent is selected from the group consisting of methanol claim 1 , ethanol claim 1 , butanol claim 1 , and pentanol.7. The method according to claim 1 , wherein the catalyst comprises methyltrioxorhenium or sulphonic acid ethyl sulphide silica.8. The method according to claim 1 , wherein the pressure inside the reaction vessel is adjusted between 5 to 10 bars.9. The method according to claim 1 , wherein the solvent comprises butanol.10. The method according to ...

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11-08-2016 дата публикации

Gas Phase Production of Alkyl Alkanoate

Номер: US20160229788A1
Принадлежит:

Alkyl alkanoates, e.g., methyl propionate, are made by a gas phase process comprising the step of contacting under carbonylation conditions an alkene (e.g., ethylene), carbon monoxide, an alkanol (e.g., methanol), and a solid sulfide-based metal catalyst (e.g., iron sulfide). The alkyl alkanoate can be converted in a second step to an alkyl ester of an aliphatic carboxylic acid, e.g., methyl methacrylate, through condensation with an aldehyde, e.g., formaldehyde. 1. A process comprising the step of contacting under carbonylation conditions an alkene gas , carbon monoxide gas , an alkanol gas and a solid sulfide-based metal catalyst to produce an alkyl alkanoate.2. A two-step process comprising:A. Contacting under carbonylation conditions an alkene gas, carbon monoxide gas, an alkanol gas, and a solid, sulfide-based metal catalyst to produce an alkyl alkanoate; andB. Contacting under condensation conditions the alkyl alkanoate of Step A with an aldehyde to produce an alkyl ester of an aliphatic carboxylic acid.3. The process of in which the solid claim 1 , sulfide-based metal catalyst comprises a Group VIII metal.4. The process of in which the solid claim 3 , sulfide-based metal catalyst comprises at least one of iron claim 3 , cobalt claim 3 , rhodium and nickel.5. The process of in which the alkene gas is of the formula CHin which n is from 2 to 12.6. The process of in which the carbonylation conditions are halogen-free.7. The process of in which the alkene gas is ethylene gas.8. The process of in which the alkanol comprises 1-30 carbon atoms.9. The process of in which the alkanol is methanol.10. The process of in which the carbonylation conditions include a temperature from 200° C. to 400° C. and a pressure from 0.1 MPa to 10 MPa.11. The process of conducted in a trickle-bed reactor.12. The process of in which the condensation conditions include a temperature from 200° C. to 400° C. and a pressure from 0.1 MPa to 10 MPa.13. A process comprising the step of ...

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10-08-2017 дата публикации

PHOTOCATALYST POWDER AND HYDROGEN PRODUCING SYSTEM

Номер: US20170225153A1
Принадлежит:

A photocatalyst powder is provided. The photocatalyst powder includes a plurality of nano crystallite aggregates formed by a plurality of nano crystallites. Each of the nano crystallites exhibits a single crystal structure. The nano crystallites have different compositions, different crystal phases, and different lattice constants from each other. An example of the nano crystallites is represented as the formula of ZnOSwith different x values in each of the nano crystallites. In addition, a hydrogen producing system is also provided. 1. A photocatalyst powder , comprising a plurality of nano crystallite aggregates formed by a plurality of nano crystallites , wherein each of the nano crystallites exhibits a single crystal structure , and the nano crystallites have different compositions , different crystal phases , and different lattice constants from each other.2. The photocatalyst powder according to claim 1 , wherein the nano crystallites have different bandgaps from each other.3. The photocatalyst powder according to claim 1 , wherein the photocatalyst powder is a three-dimensional multiple quantum well (MQW)-type nano crystallite aggregate powder.4. The photocatalyst powder according to claim 1 , wherein each of the nano crystallites comprises a zinc oxysulfide solid solution type semiconductor.5. The photocatalyst powder according to claim 4 , wherein the nano crystallites are represented by the group consisting of formula (1):{'br': None, 'sub': 1-x', 'x, 'ZnOS\u2003\u2003(1),'}in formula (1), O≦x≦1, and x is different in each of the nano crystallites.6. The photocatalyst powder according to claim 1 , wherein a size of the photocatalyst powder is 100 nm to 200 nm claim 1 , and a size of each of the nano crystallites is 2 nm to 25 nm.7. The photocatalyst powder according to claim 1 , wherein the photocatalyst powder is formed in a temperature range of 50° C. to 150° C.8. The photocatalyst powder according to claim 1 , wherein the photocatalyst powder is formed ...

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30-10-2014 дата публикации

PROCESS FOR THE PREPARATION OF A CATALYST BASED ON TUNGSTEN FOR USE IN HYDROTREATMENT OR IN HYDROCRACKING

Номер: US20140323779A1
Принадлежит: IFP ENERGIES NOUVELLES

The invention concerns a process for the preparation of a catalyst based on tungsten intended for hydrotreatment or hydrocracking processes. 1. A process for the preparation of a catalyst comprising at least one support , optionally at least one metal from group VIII of the periodic classification of the elements and at least tungsten , said process being characterized in that the tungsten is introduced onto the support , in an organic solvent A , in the form of at least one mononuclear precursor compound based on W , in its monomeric or dimeric form , having at least one W═O or W—OR bond or at least one W═S or W—SR bond where [R═CHwhere x≧1 and (x−1)≦y≦(2x+1) or R═Si(OR′)or R═Si(R′)where R′═CH where x′≧1 and (x′−1)≦y′≦(2x′+1)].2. The process as claimed in claim 1 , in which the metal from group VIII is selected from cobalt claim 1 , iron or nickel.3. The process as claimed in claim 2 , in which the metal from group VIII is nickel.4. The process as claimed in claim 1 , in which the tungsten precursor is a mononuclear precursor based on tungsten W claim 1 , used in its monomeric or dimeric form claim 1 , with formula{'br': None, 'sub': n', 'n′', 'a', 'b', 'e', 'd', 'e', 'f', 'g, 'W(═O)(═S)(OR)(SR′)(L1)(L2)(L3)(L4)(L5),'}{'sub': x', 'y', '3', '3', 'x′', 'y′, 'where R═CHwhere x≧1 and (x−1)≦y≦(2x+1) or R═Si(OR″)or R═Si(R″)where R″═C′H′ where [x″≧1 and (x″−1)≦y″≦(2x″+1)],'}{'sub': x′', 'y′', '3', '3', 'x′″', 'y′″, 'where R′═CH where x′≧1 and (x′−1)≦y′≦(2x′+1) or R′═Si(OR′″)or R′═Si(R′″)where R′″═CH where [x′″≧1 and (x′″-1)≦y′″≦(2x′″+1)],'}where 0≦n+n′≦2 and 0≦n≦2 and 0≦n′≦2,where, if n=n′=0, then (a≠0 or b≠0) and [(a+b+c+d+e+f+g=6 and 0≦a≦6, 0≦b≦6, 0≦c≦6, 0≦d≦6, 0≦e≦6, 0≦f≦6, 0≦g≦6, or (a+b+c+d+e+f+g=5 and 0≦a≦5, ≦b≦5, ≦c≦5, ≦d≦5, ≦e≦5, ≦f≦5, ≦g≦5), or (a+b+c+d+e+f+g=4 and 0≦a≦4, ≦b≦4, ≦c≦4, ≦d≦4, ≦e≦4, ≦f≦4, ≦g≦4)],where, if [(n=1 and n′=0) or (n′=1 and n=0)], then [(a+b+c+d+e+f+g=4 and 0≦a≦4, ≦b≦4, ≦c≦4, ≦d≦4, ≦e≦4, ≦f≦4, ≦g≦4)] or [(a+b+c+d+e+f+g=3 and 0≦a≦3, 0≦b≦3, 0 ...

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16-07-2020 дата публикации

Template-Assisted Synthesis of 2D Nanosheets Using Nanoparticle Templates

Номер: US20200223712A1
Принадлежит: Nanoco 2D Materials Ltd

A template-assisted method for the synthesis of 2D nanosheets comprises growing a 2D material on the surface of a nanoparticle substrate that acts as a template for nanosheet growth. The 2D nanosheets may then be released from the template surface, e.g. via chemical intercalation and exfoliation, purified, and the templates may be reused.

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17-08-2017 дата публикации

METHOD OF INCREASING THE THICKNESS OF COLLOIDAL NANOSHEETS AND MATERIALS CONSISTING OF SAID NANOSHEETS

Номер: US20170236959A1
Автор: Mahler Benoit
Принадлежит:

A process of growth in the thickness of at least one facet of a colloidal inorganic sheet. By sheet is meant a structure having at least one dimension, the thickness, of nanometric size and lateral dimensions great compared to the thickness, typically more than 5 times the thickness. By homostructured is meant a material of homogeneous composition in the thickness and by heterostructured is meant a material of heterogeneous composition in the thickness. The process allows the deposition of at least one monolayer of atoms on at least one inorganic colloidal sheet, this monolayer being constituted of atoms of the type of those contained or not in the sheet. Homostructured and heterostructured materials resulting from such process as well as the applications of the materials are also described. 1. An inorganic colloidal nanoparticle comprising an initial inorganic nanosheet partially or totally covered with at least one layer of inorganic material.2. The inorganic colloidal nanoparticle according to claim 1 , wherein the initial inorganic nanosheet is partially or totally covered on at least one of its largest faces with the at least one layer of inorganic material.3. The inorganic colloidal nanoparticle according to claim 1 , wherein the initial inorganic nanosheet is extended in the thickness with the at least one layer of inorganic material.4. The inorganic colloidal nanoparticle according to claim 1 , wherein the inorganic colloidal nanoparticle is a nanosheet.5. The inorganic colloidal nanoparticle according to claim 1 , wherein at least one part of the inorganic colloidal nanoparticle has a thickness greater than the thickness of the initial nanosheet.6. The inorganic colloidal nanoparticle according to claim 1 , wherein the inorganic colloidal nanoparticle has a thickness of 0.5 nm to 10 mm7. The inorganic colloidal nanoparticle according to claim 1 , wherein at least one lateral dimension of the inorganic colloidal nanoparticle is at least 1.5 times its ...

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01-08-2019 дата публикации

CATALYST FOR PURIFICATION OF EXHAUST GAS FROM INTERNAL COMBUSTION ENGINE AND METHOD FOR PURIFICATION OF EXHAUST GAS USING THE CATALYST

Номер: US20190232258A1
Принадлежит: UMICORE SHOKUBAI JAPAN CO., LTD.

A catalyst for purification of exhaust gas containing a phosphorus compound includes: a lower catalyst layer containing at least one of noble metal provided on a refractory three-dimensional structure; and an upper catalyst layer at an inflow side of exhaust gas and an upper catalyst layer at an outflow side of exhaust gas provided on a surface of the lower catalyst layer. The upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side have different concentrations of noble metal. The catalyst has an intermediate zone with a length of 3 to 23% of the overall length of the refractory three-dimensional structure provided between the upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side. The intermediate zone starts from a position 10 to 38% from an end face of the catalyst at the inflow side of exhaust gas. 1. A catalyst for purification of exhaust gas containing a phosphorus compound comprising: a lower catalyst layer containing at least one of noble metal provided on a refractory three-dimensional structure; and an upper catalyst layer at an inflow side of exhaust gas and an upper catalyst layer at an outflow side of exhaust gas provided on a surface of the lower catalyst layer , wherein;the upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side having different concentrations of noble metal,an intermediate zone with a length of 3 to 23% of the overall length of the refractory three-dimensional structure provided between the upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side, andthe intermediate zone starting from a position 10 to 38% from an end face of the catalyst at the inflow side of exhaust gas.2. The catalyst according to claim 1 , wherein the intermediate zone has one layer less than the upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side.3. The catalyst according to claim 1 , wherein the ...

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10-09-2015 дата публикации

METHODS AND COMPOSITIONS FOR DESULFURIZATION OF COMPOSITIONS

Номер: US20150252272A1
Принадлежит:

Methods and compositions useful for reducing the amount of sulfur in a composition comprising sulfur, including methods and compositions comprising the use of an oxidation agent and a oxidation catalyst, wherein the oxidation catalyst can have the formula MMMO. 1. A method of reducing the amount of sulfur in a composition comprising sulphur , the method comprising the steps of:a. providing a composition comprising sulfur; and{'sup': 1', '3', '2', '1', '2', '3, 'sub': 1-x', 'x', '3, 'b. contacting the composition comprising sulfur with an oxidation agent and an oxidation catalyst, wherein the oxidation catalyst has the formula MMMO, wherein Mis a rare-earth element, wherein Mis a transition metal, wherein Mis Ca or Sr, and wherein x is from 0.01 to 0.80, thereby reducing the amount of sulfur in the composition comprising sulfur.'}2. The method of claim 1 , wherein the composition comprising sulfur comprises petroleum.3. The method of claim 1 , wherein the composition comprising sulfur is petroleum.4. The method of claim 1 , wherein the oxidation agent comprises HO claim 1 , NO claim 1 , NO claim 1 , NO claim 1 , acetic acid claim 1 , tert-butyl hydrogen phosphate (TBHP) claim 1 , formic acid claim 1 , sulfuric acid claim 1 , nitric acid claim 1 , O claim 1 , air claim 1 , or ozone claim 1 , or a combination thereof.5. The method of claim 1 , wherein the oxidation agent comprises HO.6. The method of claim 1 , wherein the rare-earth element comprises La claim 1 , Pr claim 1 , Gd claim 1 , Sm claim 1 , Nd claim 1 , or Ce.7. The method of claim 1 , wherein the rare-earth element is La.8. The method of claim 1 , wherein the transition metal comprises Fe claim 1 , Mn claim 1 , Ni claim 1 , Co claim 1 , Mo claim 1 , or Cu.9. The method of claim 1 , wherein the transition metal is Fe.10. The method of claim 1 , wherein Mis Sr.11. The method of claim 1 , wherein x is from 0.10 to 0.50.12. The method of claim 1 , wherein x is from 0.10 to 0.30.13. The method of claim 1 , ...

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01-08-2019 дата публикации

Method of forming a semiconductor device using layered etching and repairing of damaged portions

Номер: US20190237328A1

A method of fabricating a semiconductor device includes plasma etching a portion of a plurality of metal dichalcogenide films comprising a compound of a metal and a chalcogen disposed on a substrate by applying a plasma to the plurality of metal dichalcogenide films. After plasma etching, a chalcogen is applied to remaining portions of the plurality of metal dichalcogenide films to repair damage to the remaining portions of the plurality of metal dichalcogenide films from the plasma etching. The chalcogen is S, Se, or Te.

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31-08-2017 дата публикации

Dehydrogenation of alkanes to alkenes

Номер: US20170247302A1
Принадлежит: Haldor Topsoe AS

Process for dehydrogenation of alkanesor alkylbenzenes by using metal sulfide catalyst under the presence of small amounts of hydrogen sulfide.

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20-11-2014 дата публикации

Photocatalytic CO2 Reduction System

Номер: US20140339072A1
Принадлежит: SUNPOWER TECHNOLOGIES LLC

A system employing sunlight energy for reducing COinto methane and water is disclosed. The system may include the use of a photoactive material including plasmonic nanoparticles and photocatalytic capped colloidal nanocrystals (PCCN). A method for producing the PCCN may include a semiconductor nanocrystal synthesis and an exchange of organic capping agents with inorganic capping agents. Additionally, the PCCN may be deposited between the plasmonic nanoparticles, and may act as photocatalysts for redox reactions. The COreduction system may use inorganic capping agents that cap the surface of semiconductor nanocrystals to form PCCN, which may be deposited on a substrate and treated to form a photoactive material. The photoactive material may be employed in the system to harvest sunlight and produce energy necessary for carbon dioxide reduction. The system may also include elements necessary to collect and transfer methane, for subsequent transformation into electrical energy. 1. A method for reducing carbon dioxide comprising:forming photocatalytic capped colloidal nanocrystals, wherein each photocatalytic capped colloidal nanocrystal includes a first semiconductor nanocrystal capped with a first inorganic capping agent;forming plasmonic nanoparticles, wherein the plasmonic nanoparticles include noble metal nanoparticles;depositing the formed plasmonic nanoparticles onto a substrate;depositing the formed photocatalytic capped colloidal nanocrystals on the substrate between the plasmonic nanoparticles, wherein each photocatalytic capped colloidal nanocrystal is deposited between at least two plasmonic nanoparticles;thermally treating the substrate, the photocatalytic capped colloidal nanocrystals, and the plasmonic nanoparticles;absorbing light with a frequency equal to or greater than a frequency of electrons oscillating against the restoring force of positive nuclei within the plasmonic nanoparticles to cause localized surface plasmon resonance, whereby the localized ...

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30-07-2020 дата публикации

PHOTOCATALYTIC STRUCTURE AND METHOD FOR MAKING THE SAME

Номер: US20200238266A1
Принадлежит:

The disclosure relates to a photocatalytic structure. The photocatalytic structure includes a carbon nanotube structure, a photocatalytic active layer coated on the carbon nanotube structure, and a metal layer including a plurality of nanoparticles located on the surface of the photocatalytic active layer. The carbon nanotube structure comprises a plurality of intersected carbon nanotubes and defines a plurality of openings, and the photocatalytic active layer is coated on the surface of the plurality of carbon nanotubes. The metal layer includes a plurality of nanoparticles located on the surface of the photocatalytic active layer. 1. A photocatalytic structure comprising:a carbon nanotube structure;a photocatalytic active layer coated on the carbon nanotube structure; anda metal layer comprising a plurality of nanoparticles on the surface of the photocatalytic active layer;wherein the carbon nanotube structure comprises a plurality of carbon nanotubes intersected with each other and defines a plurality of openings, and the photocatalytic active layer is coated on the surface of the plurality of carbon nanotubes.2. The photocatalytic structure of claim 1 , wherein the carbon nanotube structure comprises a first carbon nanotube film and a second nanotube film stacked and intersected with each other.3. The photocatalytic structure of claim 2 , wherein the first carbon nanotube film comprises a plurality of first carbon nanotubes aligned along a first direction claim 2 , the second carbon nanotube film comprises a plurality of second carbon nanotubes aligned along a second direction claim 2 , an angle is defined between the first direction and the second direction.4. The photocatalytic structure of claim 3 , wherein the angle between the first direction and the second direction is larger than 0 degrees and less than or equal to 90 degrees.5. The photocatalytic structure of claim 1 , wherein the carbon nanotube structure comprises a plurality of carbon nanotube films ...

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06-09-2018 дата публикации

UPGRADED EBULLATED BED REACTOR WITH LESS FOULING SEDIMENT

Номер: US20180251690A1
Принадлежит:

An ebullated bed hydroprocessing system is upgraded using a dual catalyst system that includes a heterogeneous catalyst and dispersed metal sulfide particles to produce less fouling sediment. The dual catalyst system more effectively converts sediment-forming precursors to produce sediment that is less fouling than sediment produced using only the heterogeneous catalyst and not the dispersed metal sulfide particles. The dual catalyst system provides for a lower rate of equipment fouling for a given sediment production rate and/or concentration. In some cases, sediment production rate and/or concentration can be maintained or increased while equipment fouling is reduced. In some cases, sediment production rate and/or concentration can be increased without increasing equipment fouling. 1. A method of upgrading an ebullated bed hydroprocessing system that includes one or more ebullated bed reactors to produce less fouling sediment , comprising:operating an ebullated bed reactor using a heterogeneous catalyst to hydroprocess heavy oil at initial conditions, including an initial sediment production rate and/or initial sediment concentration in a process stream and an initial rate of equipment fouling;thereafter upgrading the ebullated bed reactor to operate using a dual catalyst system comprised of dispersed metal sulfide catalyst particles and heterogeneous catalyst; andoperating the upgraded ebullated bed reactor using the dual catalyst system to produce less fouling sediment, resulting in less equipment fouling at a given sediment production rate and/or concentration compared to when operating the ebullated bed reactor at the initial conditions.2. The method of claim 1 , wherein operating the upgraded ebullated bed reactor using the dual catalyst system to produce less fouling sediment comprises:producing converted products at a same or similar rate as an initial production rate of converted products when operating at the initial conditions;producing sediment at a ...

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24-09-2015 дата публикации

Gaseous Mercury Oxidation and Capture

Номер: US20150265967A1
Принадлежит: Novinda Corp

Described herein is a process for oxidizing gaseous Hg(0) in the combustion gas from a coal fired boiler. The process includes injecting into the combustion gases a particulate mercury oxidant precatalyst. The process further including, oxidizing Hg(0) in the combustion gases to an oxidized mercury selected from the group consisting of Hg(I), Hg(II) and injecting a mercury sorbent that admixes with the oxidized Hg(II) to form a oxidized-mercury/sorbent species. The oxidized-mercury/sorbent species can then be collected from the combustion (flue) gas using standard powder capture technologies.

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11-12-2014 дата публикации

Porous Bodies and Methods

Номер: US20140364302A1
Принадлежит:

Systems and methods for treating a fluid with a body are disclosed. Various aspects involve treating a fluid with a porous body. In select embodiments, a body comprises ash particles, and the ash particles used to form the body may be selected based on their providing one or more desired properties for a given treatment. Various bodies provide for the reaction and/or removal of a substance in a fluid, often using a porous body comprised of ash particles. Computer-operable methods for matching a source material to an application are disclosed. Certain aspects feature a porous body comprised of ash particles, the ash particles have a particle size distribution and interparticle connectivity that creates a plurality of pores having a pore size distribution and pore connectivity, and the pore size distribution and pore connectivity are such that a first fluid may substantially penetrate the pores. 1. A method comprising:providing a first porous body having a first pore size distribution;exposing the first porous body to a fluid comprising particles, the particles including a fugitive phase and a remaining substance;forming a first layer comprising the particles on the first porous body;removing the fluid, leaving at least a portion of the particles in the first layer; andprocessing the first porous body and the first layer to remove the fugitive phase and yield a second porous body, the second porous body having the first porous body and a second layer comprising the remaining substance, the second porous body having a second pore size distribution.2. A body comprising:an upstream side;a downstream side;a plurality of upstream channels open to the upstream side and closed to the downstream side;a plurality of downstream channels open to the downstream side and closed to the upstream side; a first region separating the upstream and downstream sides, the first region having over 20% porosity and providing structural properties; and', 'a layer disposed on the upstream side ...

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20-09-2018 дата публикации

METHOD OF FORMING A SEMICONDUCTOR DEVICE USING LAYERED ETCHING AND REPAIRING OF DAMAGED PORTIONS

Номер: US20180269059A1
Принадлежит:

A method of fabricating a semiconductor device includes plasma etching a portion of a plurality of metal dichalcogenide films comprising a compound of a metal and a chalcogen disposed on a substrate by applying a plasma to the plurality of metal dichalcogenide films. After plasma etching, a chalcogen is applied to remaining portions of the plurality of metal dichalcogenide films to repair damage to the remaining portions of the plurality of metal dichalcogenide films from the plasma etching. The chalcogen is S, Se, or Te. 1. A method of fabricating a semiconductor device , comprising:plasma etching a portion of a plurality of metal dichalcogenide films comprising a compound of a metal and a chalcogen disposed on a substrate by applying a plasma to the plurality of metal dichalcogenide films; andafter plasma etching, applying an additional quantity of the chalcogen to remaining portions of the plurality of metal dichalcogenide films to repair damage to the remaining portions of the plurality of metal dichalcogenide films from the plasma etching,wherein the chalcogen is S, Se, or Te.2. The method according to claim 1 , wherein the plasma is selected from the group consisting of oxygen claim 1 , argon claim 1 , hydrogen claim 1 , and reactive-ion etch gases.3. The method according to claim 1 , wherein the metal dichalcogenide films comprise a metal dichalcogenide selected from the group consisting of WS claim 1 , MoS claim 1 , WSe claim 1 , MoSe claim 1 , WTe claim 1 , and MoTe.4. The method according to claim 1 , wherein the substrate comprises silicon claim 1 , silicon oxide claim 1 , or aluminum oxide.5. The method according to claim 1 , wherein a plasma power ranges from about 20 W to about 60 W claim 1 , and an etching time ranges from about 5 sec. to about 60 sec.6. The method according to claim 1 , wherein the applying a chalcogen to remaining portions of the plurality of metal dichalcogenide films is a re-sulfurization operation in which evaporated sulfur is ...

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20-08-2020 дата публикации

Method of forming a semiconductor device using layered etching and repairing of damaged portions

Номер: US20200266059A1

A method of fabricating a semiconductor device includes plasma etching a portion of a plurality of metal dichalcogenide films comprising a compound of a metal and a chalcogen disposed on a substrate by applying a plasma to the plurality of metal dichalcogenide films. After plasma etching, a chalcogen is applied to remaining portions of the plurality of metal dichalcogenide films to repair damage to the remaining portions of the plurality of metal dichalcogenide films from the plasma etching. The chalcogen is S, Se, or Te.

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06-10-2016 дата публикации

CADMIUM SULFIDE QUANTUM DOTS

Номер: US20160288106A1
Принадлежит:

Provided herein are compositions comprising cadmium sulfide quantum dot photocatalysts and methods and systems utilizing as much (e.g., for the reduction of a nitrobenzene to an aniline). 1. A system comprising:(a) a cadmium sulfide (CdS) quantum dot (QD); and(b) a nitrobenzene compound.2. The system of claim 1 , wherein the nitrobenzene compound is selected from the group consisting of: nitrobenzene claim 1 , 4-nitrobenzoic acid claim 1 , methyl 4-nitrobenzoate claim 1 , 1-chloro-4-nitrobenzene claim 1 , 1-fluoro-4-nitrobenzene claim 1 , 4-nitroaniline claim 1 , 1-tertbutyl-4-nitrobenzene claim 1 , 2 claim 1 ,4 claim 1 ,6-tri-tertbutyl-nitrobenzene claim 1 , 1 claim 1 ,3-dimethyl-2-nitrobenzene claim 1 , 1 claim 1 ,3-dimethyl-5-nitrobenzene claim 1 , 2 claim 1 ,4 claim 1 ,6-trinitrotoluene claim 1 , 2 claim 1 ,4-dinitrotoluene claim 1 , 2 claim 1 ,6-dinitrotoluene claim 1 , 2 claim 1 ,3-dinitrotoluene claim 1 , 2 claim 1 ,5-dinitrotoluene claim 1 , 3 claim 1 ,4-dinitrotoluene claim 1 , 3 claim 1 ,5-dinitrotoluene claim 1 , 1 claim 1 ,3 claim 1 ,5-trinitrobenzene claim 1 , 2 claim 1 ,4 claim 1 ,6-trinitrophenol claim 1 , and 2 claim 1 ,4 claim 1 ,6-trinitro-1 claim 1 ,3-benzenediol.2. (canceled)3. The system of claim 1 , further comprising one or more solvents.4. The system of claim 3 , wherein the one or more solvents comprise water and/or methanol.5. (canceled)6. The system of claim 1 , further comprising one or more sacrificial reductants.7. The system of claim 6 , wherein the one or more sacrificial reductants comprise an alcohol claim 6 , a thiol claim 6 , a carboxylate claim 6 , and/or ascorbic acid.8. The system of claim 6 , wherein the one or more sacrificial reductants comprise methanol and/or 3-mercaptopropionic acid.9. The system of claim 1 , further comprising an aniline.10. (canceled)11. The system of claim 9 , wherein the aniline is selected from the group consisting of: aniline claim 9 , 4-aminobenzoic acid claim 9 , methyl 4-aminobenzoate claim 9 , 1 ...

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09-12-2021 дата публикации

METHOD FOR MAKING HYDRODESULFURIZATION CATALYST INCLUDING CALCINATION

Номер: US20210380891A1

A method of preparing hydrodesulfurization catalysts having cobalt and molybdenum sulfide deposited on a support material containing mesoporous silica. The method utilizes a sulfur-containing silane that dually functions as a silica source and a sulfur precursor. The method involves an one-pot strategy for hydrothermal treatment and a single-step calcination and sulfidation procedure. The application of the hydrodesulfurization catalysts in treating a hydrocarbon feedstock containing sulfur compounds to produce a desulfurized hydrocarbon stream is also specified. 1. A calcination method for making a CoMoS hydrodesulfurization catalyst , the method comprising:mixing a molybdenum precursor, a cobalt precursor, a mercaptoalkyltrialkoxysilane, a structural directing surfactant, an acid, and a solvent to form a reaction mixture;hydrothermally treating the reaction mixture to form a dried mass; andcalcining the dried mass in a reducing atmosphere with an activation gas containing a mixture of hydrogen and an inert gas thereby forming the CoMoS hydrodesulfurization catalyst, wherein the hydrogen is 50-80% by volume relative to a total volume of the reducing atmosphere,wherein:the inert gas is at least one selected from the group consisting of argon, nitrogen, and helium; andthe CoMoS hydrodesulfurization catalyst comprises cobalt and molybdenumsulfide disposed on a support material comprising a mesoporous silica.2. The method of claim 1 , wherein the CoMoS hydrodesulfurization catalyst is not subjected to a sulfidation with a sulfidation reagent.3. The method of claim 1 , wherein the mercaptoalkyltrialkoxysilane is at least one selected from the group consisting of (mercaptomethyl)trimethoxysilane claim 1 , (mercaptomethyl)triethoxysilane claim 1 , (mercaptomethyl)tripropoxysilane claim 1 , (2-mercaptoethyl)trimethoxysilane claim 1 , (2-mercaptoethyl)triethoxysilane claim 1 , (2-mercaptoethyl)tripropoxysilane claim 1 , (3-mercaptopropyl)trimethoxysilane claim 1 , (3- ...

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27-08-2020 дата публикации

UPCONVERSION LUMINESCENCE COUPLED TO PLASMONIC METAL NANOSTRUCTURES AND PHOTOACTIVE MATERIAL FOR PHOTOCATALYSIS

Номер: US20200269219A1
Принадлежит:

Photoactive catalyst and methods of producing Hby photocatalytic water splitting. The photoactive catalyst includes an upconverting material, a photocatalyst material, and plasmonic metal nanostructures deposited on the surface of the photocatalyst material. The upconverting material is not embedded in or coated by the photocatalyst material. The upconverting material is capable of emitting light at a first wavelength that has an energy equal to or higher than the band gap of the photocatalyst material and at a second wavelength that can be absorbed by the plasmonic metal nanostructures. 1. A photoactive catalyst comprising:(i) an upconverting material comprising a lanthanide material or a doped lanthanide material;(ii) a photocatalyst material consisting of CdS; and(iii) plasmonic metal nanostructures deposited on the surface of the photocatalyst material;wherein the upconverting material is not embedded in or coated by photocatalyst material and the upconverting material is in physical contact with the photocatalyst material, but has less than 50% of its surface area in physical contact with a contiguous mass of the photocatalyst material; andwherein the upconverting material is capable of emitting light at a first wavelength that has an energy equal to or higher than the band gap of the photocatalyst material and at a second wavelength that can be absorbed by the plasmonic metal nanostructures.2. The photoactive catalyst of claim 1 , wherein the upconverting material comprises a doped lanthanide material.3. The photoactive catalyst of claim 2 , wherein the doped lanthanide material comprises sodium yttrium tetrafluoride-ytterbium (NaYF—Yb) doped with thulium (Tm).4. The photoactive catalyst of claim 3 , wherein the doped lanthanide material comprises 15 to 25 mol % of Yb and 0.5 to 1.0 mol % of Tm.5. The photoactive catalyst of claim 3 , wherein the NaYF—Yb doped with Tm is capable of absorbing light at a wavelength of 980 nm and emitting light at wavelengths of ...

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04-10-2018 дата публикации

Carbon doped tin disulphide and methods for synthesizing the same

Номер: US20180280942A1

Disclosed herein are carbon doped tin disulphide (C—SnS 2 ) and other SnS 2 composites as visible light photocatalyst for CO 2 reduction to solar fuels. The in situ carbon doped SnS 2 photocatalyst provide higher efficiency than the undoped pure SnS 2 . Also disclosed herein are methods for preparing the catalysts.

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13-10-2016 дата публикации

CATALYST FOR THE EPOXIDATION OF ALKENES

Номер: US20160297781A1
Автор: ZAKZESKI JOSEPH J.
Принадлежит:

The present invention relates to a catalyst for the epoxidation of alkenes, comprising silver, rhenium, cesium, lithium, tungsten and sulfur on a support. The present invention further relates to a process for producing the catalyst and the use of the catalyst for the oxidation of alkylenes to alkylene oxides. In addition, the present invention relates to a process for preparing ethylene oxide from ethylene, which comprises the oxidation of ethylene with oxygen in the presence of said catalyst. 113.-. (canceled)14. A catalyst for the epoxidation of alkenes , comprising silver , rhenium , cesium , lithium , tungsten and sulfur on a support , wherein the tungsten has been deposited on the support as a tungsten compound with a sulfur to tungsten atomic ratio of 150 ppm or less.15. A catalyst according to claim 14 , wherein the support is an aluminum oxide support.16. A catalyst according to claim 14 , wherein the support is an alpha-aluminum oxide with a purity of at least 85%.17. A catalyst according to claim 14 , wherein the support has a bimodal pore size distribution.18. A catalyst according to claim 14 , wherein the support has a bimodal pore size distribution comprising at least pores having a pore diameter in the range from 0.1 to 15 μm and pores having a pore diameter in the range from 15 to 100 μm.19. A catalyst according to claim 14 , wherein the support has a BET surface area in the range from 0.6 to 1.3 m/g.20. A catalyst according to claim 14 , comprising silver in an amount of from 10 to 25% by weight claim 14 , rhenium in an amount of from 150 to 450 ppm claim 14 , cesium in an amount of from 100 to 600 ppm claim 14 , lithium in an amount of from 50 to 300 ppm claim 14 , tungsten in an amount of from 80 to 250 ppm and sulfur in an amount of from 5 to 150 ppm on a support claim 14 , wherein the tungsten has been deposited on the support as a tungsten compound with a sulfur to tungsten atomic ratio of 150 ppm or less.21. A catalyst according to claim 14 , ...

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11-10-2018 дата публикации

PHOTOCATALYST ELECTRODE AND ARTIFICIAL PHOTOSYNTHESIS MODULE

Номер: US20180290129A1
Автор: Kobayashi Hiroyuki
Принадлежит:

A photocatalyst electrode decomposes water with light to generate gas. The photocatalyst electrode has a laminate including a substrate, a conductive layer provided on a surface of the substrate, and a photocatalyst layer provided on a surface of the conductive layer, and a first co-catalyst electrically connected to the photocatalyst layer. The light is incident from the surface side of the photocatalyst layer of the laminate, and in a case where a region where the light is incident on the surface of the photocatalyst layer and above the surface is defined as a first region and the region other than the first region is defined as a second region, the first co-catalyst is provided at least in the second region. The first co-catalyst and the photocatalyst layer are electrically connected to each other by at least one of a transparent conductive layer provided on the surface of the photocatalyst layer or a wiring line. 1. A photocatalyst electrode that decomposes water with light to generate gas , the photocatalyst electrode comprising:a laminate including a substrate, a conductive layer provided on a surface of the substrate, and a photocatalyst layer provided on a surface of the conductive layer; anda first co-catalyst electrically connected to the photocatalyst layer,wherein the light is incident from the surface side of the photocatalyst layer of the laminate, and in a case where a region where the light is incident on the surface of the photocatalyst layer and above the surface is defined as a first region and the region other than the first region is defined as a second region, the first co-catalyst is provided at least in the second region, andwherein the first co-catalyst and the photocatalyst layer are electrically connected to each other by at least one of a transparent conductive layer provided on the surface of the photocatalyst layer or a wiring line.2. The photocatalyst electrode according to claim 1 ,wherein the second region is a region provided on a ...

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19-09-2019 дата публикации

CATALYSTS FOR SOFT OXIDATION COUPLING OF METHANE TO ETHYLENE AND ETHANE

Номер: US20190283007A1
Принадлежит:

Disclosed is a catalyst and methods for the oxidative coupling of methane (OCM) reaction using elemental sulfur as a soft oxidant. The process can provide ethylene from methane with high conversion and selectivity. 1. A method of producing an olefin from methane and elemental sulfur , the method comprising:(a) obtaining a reaction mixture comprising methane and elemental sulfur gas; and(b) contacting the reaction mixture with a catalyst under reaction conditions sufficient to produce a product stream comprising an olefin, wherein the catalyst is a metal, a mixed metal oxide, mixed metal sulfide, a metal oxysulfide, mixed metal oxysulfide, or any mixture thereof.2. The method of claim 1 , wherein the olefin comprises C+ hydrocarbons claim 1 , preferably ethylene.3. The method of claim 1 , wherein the product stream further comprises hydrogen sulfide.4. The method of claim 1 , wherein the reaction mixture comprises a methane to elemental sulfur molar ratio of 1:2 to 20:1.5. The method of claim 1 , wherein the conditions sufficient to produce a product stream in step (b) comprise a reaction temperature of at least 450° C.6. The method of claim 1 , wherein the conditions sufficient to produce a product stream comprise a reaction pressure of 0.05 to 10.0 MPa or 0.1 to 10.0 MPa claim 1 , a gas hourly space velocity (GHSV) of 500 to 100 claim 1 ,000 or both.7. The method of claim 1 , wherein the metal claim 1 , the mixed metal oxide claim 1 , the mixed metal sulfide claim 1 , the metal oxysulfide claim 1 , mixed metal oxysulfide claim 1 , or the metal sulfide comprises:an alkaline earth metal, preferably magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), or any combination thereof;a transition metal, preferably yttrium (Y), zirconium (Zr), vanadium (V), tantalum (Ta), tungsten (W), manganese (Mn), rhenium (Rh), iron (Fe), cobalt (Co), iridium (Ir), nickel (Ni), copper (Cu), zinc (Zn), or any combination thereof;a post-transition metal, preferably aluminum (Al), ...

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26-09-2019 дата публикации

BULK METALLIC CATALYSTS AND METHODS OF MAKING AND USING THE SAME

Номер: US20190291085A1
Принадлежит:

Bulk metallic catalyst precursors are provided that include a Group VIB metal, such as Ni, a Group VIII metal, such as Mo or W, an organic-compound based component, and an organo-metalloxane polymer or gel. The catalyst precursors can further include a binder. Amorphous sulfided catalysts formed from the catalyst precursors are also provided. The catalyst precursor can have a surface area of about 50 m/g or less. 1. A bulk metallic catalyst precursor comprising:a) Ni;b) Mo or W, wherein a combined amount of Ni and Mo or a combined amount of Ni or W is about 30 wt % to about 85 wt % on a metal oxide basis;c) about 10 wt % to about 60 wt % of an organic compound-based component, wherein the organic compound-based component is based on at least one organic complexing agent; andd) about 1 wt % to about 50 wt % of an organo-metalloxane polymer, an organo-metalloxane gel, or a combination thereof, wherein the organo-metalloxane polymer is selected from the group consisting of an organo-siloxane polymer, an organo-alumoxane polymer, an organo-titanoxane polymer, and a combination thereof.2. The bulk metallic catalyst precursor of claim 1 , wherein the catalyst precursor has a BET surface area of 50 m/g or less.3. The bulk metallic catalyst precursor of claim 1 , wherein the catalyst precursor comprises at least about 5 wt % of the organo-metalloxane polymer claim 1 , organo-metalloxane gel claim 1 , or combination thereof.4. The bulk metallic catalyst precursor of claim 1 , wherein the organic compound-based component is further based on organic functional groups from the organo-metalloxane polymer claim 1 , organo-metalloxane gel claim 1 , or combination thereof.5. The bulk metallic catalyst precursor of claim 1 , wherein the organo-metalloxane polymer claim 1 , organo-metalloxane gel claim 1 , or combination thereof is water soluble.6. The bulk metallic precursor of claim 1 , wherein the organo-metalloxane polymer comprises an organo-siloxane polymer claim 1 , and ...

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26-09-2019 дата публикации

BIO-ASSISTED PROCESS FOR CONVERSION OF CARBON DIOXIDE TO FUEL PRECURSORS

Номер: US20190292571A1
Принадлежит: INDIAN OIL CORPORATION LIMITED

The present invention provides a semi-conducting biogenic hybrid catalyst capable of reducing COinto fuel precursors. Specifically, the present application involves a method for bio-assisted conversion of COto fuel precursors using said semiconducting biogenic hybrid catalyst in batch and continuous mode. 1. A semi-conducting biogenic hybrid catalyst capable of reducing COinto fuel precursors , said catalyst consisting:{'i': Enterobacter aerogenes', 'Serratia', 'Shewanella', 'Alcaligenes', 'Pseudomonas aeruginosa', ', Ochrobactrum anthropi', ', Ochrobactrum anthropi', 'Pseudomonas alcaliphila, '(a) electroactive microorganism selected from the group consisting of MTCC 25016, sp. MTCC 25017, sp. MTCC 25020, sp. MTCC 25022, MTCC 1036ATCC 49188MTCC 9026, and MTCC 6724; and'}(b) semi conducting particles comprising a precursor metal component, electron facilitator and dye molecule;wherein the semi conducting particles are located on cell surface of the electroactive microorganisms.2. A method for bio-assisted conversion of COto fuel precursors employing the semiconducting biogenic hybrid catalyst as claimed in claim 1 , said method comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(a) adding the semi-conducting biogenic hybrid catalyst as claimed in to culture medium in a transparent reactor;'}{'sub': '2', '(b) sparging COthrough the culture medium and irradiating the transparent reactor with a light source having wavelength >400 nm; and'} 'wherein the fuel precursors are selected from the group consisting of methanol, ethanol, acetic acid, butanol, isopropanol, butyric acid, and caproic acid.', '(c) recovering the fuel precursors from the culture medium;'}3. A method for bio-assisted conversion of biogas to fuel precursors employing the semiconducting hybrid catalyst as claimed in claim 1 , said method comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(a) adding the semi-conducting biogenic hybrid catalyst as claimed in to culture medium in a ...

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26-10-2017 дата публикации

Sulfur as a Selective Oxidant in Oxidative Hydrocarbon Processing Over Oxide/Chalcogenide Catalysts

Номер: US20170305813A1
Принадлежит:

Methods for oxidative coupling of methane using metal oxide catalysts and a sulfur oxidant. 1. A method for oxidatively coupling methane , said method comprising:providing a metal oxide component;{'sub': '2', 'exposing said metal oxide component to gaseous Sfor at least one of a time and at a temperature sufficient for at least partial sulfidation of said metal oxide component; and'}contacting said sulfidated component with methane for at least one of a methane flow rate and a time sufficient to oxidatively couple said methane and produce ethylene.2. The method of wherein said metal oxide component is selected from MgO claim 1 , ZrO claim 1 , TiO claim 1 , CeO claim 1 , SmO claim 1 , ZnO claim 1 , W0 claim 1 , CrO claim 1 , LaOand FeO.3. The method of wherein each of said gaseous Sand methane is carried with Ar.4. The method of wherein HS is contacted with said sulfidated metal oxide component.5. The method of wherein ethylene is selectively produced over ethane and acetylene.6. A method for oxidatively coupling methane claim 1 , said method comprising:{'sub': 2', '2', '2', '2', '3', '3', '2', '3', '2', '3', '3', '4, 'providing a metal oxide component selected from MgO, ZrO, TiO, CeO, SmO, ZnO, WO, CrO, LaOand FeO;'}{'sub': '2', 'exposing said metal oxide component to gaseous Sfor at least one of a time and at a temperature sufficient for at least partial sulfidation of said metal oxide component; and'}contacting said sulfidated component with methane for at least one of a methane flow rate and a time sufficient to oxidatively couple said methane and selectively produce ethylene over ethane and acetylene.7. The method of wherein each of said gaseous Sand methane is carried with Ar.8. The method of wherein HS is contacted with said sulfidated metal oxide component.9. The method of wherein said metal oxide component comprises coke deposits claim 6 , said deposits increasing ethylene production.10. The method of wherein increasing said contact time increases the ...

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