Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 6915. Отображено 100.
24-05-2012 дата публикации

Process for producing propylene oxide

Номер: US20120130096A1
Автор: Anna Forlin, Bruce D. Hook, David H. West, Hannah L. Crampton, Philip J. Carlberg, William W. Fan
Принадлежит: Individual

A multiple liquid phase composition and process for preparing propylene oxide including a reaction mixture of: (a) propylene, (b) at least one peroxide compound, (c) at least one catalyst, such as a titanium silicalite-1 (TS-I) catalyst, and (d) and a predetermined amount of a solvent mixture; wherein the solvent mixture comprises at least (i) at least one alcohol, such as methanol, and (ii) at least one non-reactive co-solvent; wherein the solvents are mixed at a predetermined concentration; wherein the non-reactive co-solvent has a different boiling point than propylene oxide; and wherein the resulting propylene oxide product partitions into a high affinity solvent during the reaction. The process of the present invention advantageously produces a waste stream with little or no significant amount of sodium chloride (NaCl).

Подробнее
Номер записи: 1
31-05-2012 дата публикации

Process

Номер: US20120136165A1
Автор: Basudeb Saha, David C. Sherrington, Krzysztof Ambroziak, Rene Mbeleck
Принадлежит: SOUTH BANK UNIVERSITY ENTERPRISES LTD

The present invention provides a continuous process for the epoxidation of an olefinic compound with an oxidant, which process comprises reaction of an olefinic compound with an oxidant in the presence of a catalyst in an apparatus that comprises a reactive distillation column, which column comprises (i) a reactive section, which comprises the catalyst (ii) a rectifying section situated above the reactive section and adapted to allow separation of reagents and/or by-products from products (ix) a stripping section situated below the reactive section and adapted to allow separation of product from reagents and/or by-products (x) a vessel situated below the stripping section and adapted to provide a source of heat for the column and in which initial vaporisation of one or more of the reagents can occur, wherein the temperature in the reactive section (i) is a temperature at which the reaction between the olefinic compound and the oxidant takes place and the temperature in the stripping section (iii) is higher than the temperature in the rectifying section (ii).

Подробнее
Номер записи: 2
31-05-2012 дата публикации

process for the production of an olefin oxide

Номер: US20120136166A1
Автор: Donald James Remus, John Robert Lockemeyer, Randall Clayton Yeates, Thomas Szymanski, William Herman Gerdes
Принадлежит: Shell Oil Co

The invention provides a process for the epoxidation of an olefin, which process comprises reacting a feed comprising an olefin and oxygen in the presence of a catalyst comprising a carrier and silver deposited on the carrier, which carrier comprises at least 85 weight percent α-alumina and has a surface area of at least 1.3 m 2 /g, a median pore diameter of more than 0.8 μm, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μm and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μm is contained in pores with diameters in the range of from 0.3 to 10 μm.

Подробнее
Номер записи: 3
13-12-2012 дата публикации

Process for the preparation of an alkylene carbonate and an alkylene glycol

Номер: US20120315198A1
Автор: Eugene Marie Godfried Andre Van Kruchten, Marek Matusz, Martin Lysle Hess, Wayne Errol Evans
Принадлежит: Shell Oil Co

The invention provides a reaction system for the production of an alkylene carbonate comprising: an epoxidation zone containing an epoxidation catalyst located within an epoxidation reactor; a carboxylation zone containing an bromide-containing carboxylation catalyst located within an alkylene oxide absorber; and one or more purification zones containing a purification absorbent capable of reducing the quantity of bromide-containing impurities in a feed comprising a recycle gas, which purification zones are located upstream from the epoxidation zone; and a process for the production of an alkylene carbonate and an alkylene glycol.

Подробнее
Номер записи: 4
28-03-2013 дата публикации

METHOD FOR PRODUCING OLEFIN OXIDE

Номер: US20130079534A1
Автор: Kanazawa Hideo
Принадлежит: Sumitomo Chemical Company, Limited

According to a conventional method for producing an olefin oxide, hydrogen peroxide and an olefin oxide as a product are obtained in the state of a mixture, and in order to decrease the content of hydrogen peroxide in the mixture, it is necessary to distill the mixture to separate hydrogen peroxide from the olefin oxide. The present invention provides a method for producing an olefin oxide including a reaction step of reacting hydrogen peroxide with an olefin in the presence of a solvent and a titanium silicate catalyst; and a step of mixing a reducing agent containing at least one selected from the group consisting of a sulfide and hydrazine with the reaction solution obtained in the reaction step. 1. A method for producing an olefin oxide , comprising:a reaction step of reacting hydrogen peroxide with an olefin in the presence of a solvent and a titanium silicate catalyst; anda step of mixing a reducing agent containing at least one selected from the group consisting of a sulfide and hydrazine with the reaction solution obtained in the reaction step.2. The method according to claim 1 , wherein the reducing agent is sodium sulfide.3. The method according to claim 1 , wherein the reducing agent is a hydrazine hydrate or an aqueous solution of hydrazine.4. The method according to claim 1 , wherein the olefin is propylene claim 1 , and the olefin oxide is propylene oxide.5. The method according to claim 1 , wherein the solvent is a mixed solvent of acetonitrile and water.6. The method according to claim 1 , wherein the titanium silicate catalyst is a Ti-MWW precursor having a molar ratio of silicon to nitrogen (an Si/N ratio) of 5 to 20.7. A method for producing an olefin oxide claim 1 , comprising:a step of continuously adding hydrogen peroxide and an olefin to a reactor in which a solvent and a titanium silicate catalyst are contained, performing reaction in the reactor, and continuously supplying the obtained reaction solution to a decomposition tank; anda step of ...

Подробнее
Номер записи: 5
11-04-2013 дата публикации

Epoxidation of glycerol and derivatives therefrom

Номер: US20130090497A1
Автор: Andre Pienaar, Laurence Justin Pienaar Wilson, Michael Stockenhuber
Принадлежит: AEL Mining Services Ltd

A method producing a surfactant from glycerol by converting glycerol, in a first step, to glycidol, polymerizing glycidol to an aliphatic alcohol and finally substituting a hydroxyl group with a substitute anion.

Подробнее
Номер записи: 6
09-05-2013 дата публикации

Ordered mesoporous titanosilicate and the process for the preparation thereof

Номер: US20130116453A1
Автор: Anuj Kumar, Srinivas Darbha
Принадлежит: Council of Scientific and Industrial Research CSIR

The invention discloses three-dimensional, ordered, mesoporous titanosilicates wherein the Ti is in a tetrahedral geometry and exclusively substituted for Si in the silica framework. Such titanosilicates find use as catalysts for epoxidation, hydroxylation, C—H bond oxidation, oxidation of sulfides, aminolysis of epoxide and amoximation, with approx. 100% selectivity towards the products.

Подробнее
Номер записи: 7
16-05-2013 дата публикации

METHOD AND DEVICE USING PLASMON- RESONATING NANOPARTICLES

Номер: US20130122396A1
Автор: Christopher Phillip N., Linic Suljo
Принадлежит: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Disclosed herein are methods and articles that include a plasmon-resonating nanostructure that employ a photo-thermal mechanism to catalyze the reduction of an oxidant. As such, the plasmon-resonating nanostructure catalyzes a redox reaction at a temperature below a predetermined activation temperature. The method can be efficiently used to catalyze the reduction of an oxidant, for example in a catalytic reactor or in a fuel cell that includes a photon source. 1. A method comprising:supplying an oxidant having a π-antibonding orbital to a surface of a plasmon-resonating nanostructure;exposing the plasmon-resonating nanostructure to photons at a wavelength sufficient to photoexcite the plasmon-resonating nanostructure; andreducing the oxidant at a rate about 1.1 to about 10,000, times the rate of reduction of the oxidant under the same conditions but in the absence of the photons.2. The method of claim 1 , wherein the step ofreducing the oxidant comprises reducing the oxidant at a temperature below a predetermined thermodynamic barrier.3. The method of claim 2 , further comprising supplying and oxidizing a reductant at the temperature below the predetermined activation temperature.4. The method of claim 3 , wherein the reductant is an alkene.5. The method of claim 4 , wherein the alkene is selected from the group consisting of ethylene claim 4 , propylene claim 4 , and butylene.6. The method of claim 3 , wherein the reductant is a material selected from the group consisting of hydrogen claim 3 , methanol claim 3 , and ammonia.7. The method of claim 1 , wherein the plasmon-resonating nanostructure is present on a support.8. The method of claim 7 , wherein the support is one of silica and alumina.9. The method of claim 1 , wherein reducing the oxidant produces an oxidation product selected from a group consisting of water claim 1 , ethylene oxide claim 1 , propylene oxide claim 1 , acrylonitrile claim 1 , propenal claim 1 , acrylic acid claim 1 , carbon dioxide claim 1 ...

Подробнее
Номер записи: 8
06-06-2013 дата публикации

PROCESS FOR REGENERATION OF TITANO SILICATE CATALYST

Номер: US20130144075A1
Автор: BORLE Yogesh Laxman, KANAGASABAPATHY Subbareddy, Kapoor Bir, VERMA Arati
Принадлежит: Aditya Birla Science and Technology Co. Ltd.

Titanosilicate catalyst is used in the oxidation reactions such as allylchloride epoxidation, phenol hydroxylation, Cyclohexanone ammoximation. During the reaction the catalyst is deactivated which further decrease in the efficiency of the oxidation reactions. The present invention provides a method for an efficient regeneration of catalyst titanosilicate catalyst at low temperature below 100° C. using a gaseous mixture containing ozone, without isolating the catalyst from the reactor system. 1. A process for activating a deactivated titano silicate catalyst , in a reactor , said process comprising the following steps;i) washing the catalyst bed containing deactivated titano silicate at a temperature range of 20 to 40° C., with a solvent selected from the group consisting of alcohol, ester, ketone, water and aqueous hydrogen peroxide;ii) heating the reactor to a temperature in the range of 50° C. to 100° C., to provide a heated catalyst bed;iii) reacting the heated catalyst in the catalyst bed, with ozone gas under exothermic conditions, said reaction being carried out by feeding a gaseous mixture containing air/oxygen and ozone having ozone content in the range of 2 to 10%, and monitoring the outlet stream of the gas coming out through said bed for ozone seepage, said reaction continued till the ozone content in the outlet stream is at least 0.2%, to provide a regenerated catalyst; andiv) cooling the regenerated catalyst bed first by passing of air/oxygen gas through the said bed followed by washing of the said bed with a solvent selected from the group consisting of alcohol and water, to a temperature in the range of 20 to 40° C.2. The process as claimed in claim 1 , wherein the steps (ii) and (iii) are repeated at least once claim 1 , after cooling of the regenerated catalyst bed by air/oxygen gas in step (iv).3. The process as claimed in claim 1 , wherein the temperature of the heated catalyst bed in the step (ii) is raised to 80° C.4. The process as claimed in ...

Подробнее
Номер записи: 9
01-08-2013 дата публикации

Organometallic Molybdenum Acetylide Dioxo Complex And Process For The Preparation Thereof

Номер: US20130197245A1
Автор: Acham Vaibhav Ravindrakumar, Biradar Ankush, Dongare Mohan Keraba, Umbarkar Shubhangi Bhalchandra
Принадлежит:

An organometallic molybdenum acetylide dioxo complex of formula (η-CH)MoO(—Cs≡CPh) and provides a simple, short, efficient process for the synthesis of organometallic molybdenum dioxo complex which is used as catalyst for a number of oxidation reactions. 1. Organometallic molybdenum acetylide dioxo complex of formula (η-CH)MoO(—C≡CPh).2. Organometallic molybdenum acetylide dioxo complex as claimed in is useful as catalyst for the oxidation of olefins claim 1 , alcohols claim 1 , anilines claim 1 , sulfides and alkanes.3. Organometallic molybdenum acetylide dioxo complex as claimed in claim 1 , wherein said complex is recyclable.4. Organometallic molybdenum acetylide dioxo complex as claimed in claim 1 , wherein catalytically active species (η-CH) MoO(O)(—C≡CPh) of the said organometallic molybdenum dioxo complex (η-CH) MoO(—C≡CPh) formed after reacting with hydrogen peroxide is water soluble.5. A process for preparation of organometallic molybdenum acetylide dioxo complex of formula (η-CH)MoO(—C≡CPh) as claimed in and the said process comprising the steps of:{'sub': 2', '2', '2, 'i. treating molybdenum trioxide with aqueous halo acids HX wherein X═F, Cl, Br or I in the molar ratio of the trioxide to HX ranging between 1:6 to 1:15 at temperature in the range of 40° C. to 90° C. for period in the range of 2 to 5 hr to obtain aqua complex of dihalo dioxo molybdenum of formula MoOX.2HO wherein X═F, Cl, Br or I;'}{'sub': 2', '2', '2', '2, 'ii. adding dimethylsulphoxide or N,N-dimethylformamide to dihalo dioxo molybdenum as obtained in step (i) in the molar ratio ranging between 1:2 to 1:20 to form greenish adduct of formula MoOX.2DMSO or MoOX.2DMF wherein X═F, Cl, Br or I;'}{'sub': '2', 'iii. treating greenish adduct as obtained in step (ii) with sodium cyclopentadiene in molar ration of 1:1 to 1:20 followed by stirring at the rate of 100 to 1000 rpm to form cyclopentadiene dioxomolybdenum halo complex of formula CpMoOX wherein X═F, Cl, Br or I;'}{'sup': '5', 'sub': 5', ...

Подробнее
Номер записи: 10
01-08-2013 дата публикации

PROCESS FOR PREPARING EPOXYCARBOXYLIC ESTERS

Номер: US20130197246A1
Автор: Klopsch Rainer, Seelig Bianca, Teles Joaquim Henrique
Принадлежит:

Process for preparing epoxides of the formula I 2. The process according to claim 1 , wherein R in formula I and II is a C1-C10-alkyl group.3. The process according to or claim 1 , wherein the oxidant is hydrogen peroxide.4. The process according to any of to claim 1 , wherein the reaction is carried out in the presence of a manganese complex as catalyst.5. The process according to claim 4 , wherein the reaction is additionally carried out in the presence of oxalic acid or an oxalate.6. The process according to any of to claim 4 , wherein the tube reactor comprises one or more capillaries connected in parallel through which the reaction mixture flows claim 4 , with the capillaries having an internal diameter of less than 5 millimeters.7. The process according to any of to claim 4 , wherein the capillaries have a length of at least 10 meters.8. The process according to any of to claim 4 , wherein the tube reactor comprises at least two capillaries connected in parallel.9. The process according to any of to claim 4 , wherein the residence time of the reaction medium in the capillaries is from 5 to 200 minutes.10. The process according to any of to claim 4 , wherein the reaction is carried out at a temperature of from 0 to 30° C.11. The process according to any of to claim 4 , wherein an aqueous solution comprising the water-soluble starting materials and claim 4 , separately therefrom claim 4 , an organic solution comprising the compound of the formula II and starting compounds soluble thereon are fed into the tube reactor.12. The process according to claim 11 , wherein the organic solution is a solution of the manganese-nitrogen complex or starting compounds for this in the compound of the formula II. The present invention relates to a process for preparing epoxides of the formula Iwhere R is an organic group having from 1 to 10 carbon atoms, by reacting compounds of the formula IIwith an oxidant, wherein the preparation is carried out continuously in a tube reactor. ...

Подробнее
Номер записи: 11
15-08-2013 дата публикации

Method for producing oxidized olefin through olefin epoxidation

Номер: US20130211112A1
Автор: Bin Zhu, Chijian He, Hua Li, Jizao Gao, MIN Lin, Shuanghua Wan, Wei Wang, Xiaoju Wu, Xingtian Shu
Принадлежит: China Petroleum and Chemical Corp

A process for producing an alkylene oxide by olefin epoxidation, wherein said process comprises the steps of: (1) in a first olefin epoxidation condition, in the presence of a first solid catalyst, a first mixed stream containing a solvent, an olefin and H 2 O 2 is subjected to an epoxidation in one or more fixed bed reactors and/or one or more moving bed reactors until the conversion of H 2 O 2 reaches 50%-95%, then, optionally, the resulting reaction mixture obtained in the step (1) is subjected to a separation to obtain a first stream free of H 2 O 2 and a second stream containing the unreacted H 2 O 2 , and the olefin is introduced to the second stream to produce a second mixed stream, or optionally, the olefin is introduced to the reaction mixture obtained in the step (1) to produce a second mixed stream; (2) in a second olefin epoxidation condition, the reaction mixture obtained in the step (1) or the second mixed stream obtained in the step (1) and a second solid catalyst are introduced to one or more slurry bed reactors to conduct an epoxidation until the total conversion of H 2 O 2 reaches 98% or more, with a proviso that said process for producing the alkylene oxide by olefin epoxidation has an selectivity for the alkylene oxide of 90% or more. The process of the present invention combines the slurry bed reactor with the fixed bed reactor and/or the moving bed reactor so as to overcome the disadvantages of the low conversion of H 2 O 2 in the case that only the fixed bed reactor and/or the moving bed reactor are used, and the low selectivity for the target alkylene oxide in the case that only the slurry bed reactor is used.

Подробнее
Номер записи: 12
05-09-2013 дата публикации

Porous inorganic body

Номер: US20130231493A1
Автор: Alfons Jochum, Christian Baltes, Igor Shishkov, Isa Alexandra Queiroz Da Fonseca, Martin Kraus, Norbert Güntherberg, Siegbert Bouche, Tobias Rosendahl, Torsten Mäurer, Wolfgang Rohde
Принадлежит: BASF SE

The present invention relates to a porous inorganic body comprising pores A having a pore size S A in the range of from 0.005 to 20 micrometer and a total pore volume V A , and comprising pores B having a pore size S B in the range of from more than 20 to 1000 micrometer and a total pore volume V B , wherein the total pore volume of the pores having a pore size in the range of from 0.005 to 1000 micrometer is V C and wherein the ratio R A =V A /V C is in the range of from 0.3 to 0.7 as determined via mercury intrusion porosimetry.

Подробнее
Номер записи: 13
19-09-2013 дата публикации

Method of reducing the value of an alkylene oxide production parameter in a process of making an alkylene oxide using a high efficiency catalyst

Номер: US20130245296A1
Автор: Liping Zhang, Ravindra Tupe
Принадлежит: DOW TECHNOLOGY INVESTMENTS LLC

Methods of reducing the value of an alkylene oxide production parameter (such as alkylene oxide production rate) in a process of making an alkylene oxide by reacting an alkylene and oxygen over a high efficiency catalyst are shown and described. One method comprises reducing the concentration of oxygen in the reactor feed gas to reduce the value of the alkylene oxide production parameter.

Подробнее
Номер записи: 14
26-09-2013 дата публикации

CATALYST, PREPARATION METHOD THEREFOR, AND A METHOD FOR EPOXIDATING OLEFIN

Номер: US20130253208A1
Автор: Chen Qingling, Gao Jizao, He Chijian, Li Hua, Lin Min, LONG Jun, She Xichun, Wang Wei, Wu Xiaoju
Принадлежит:

The present invention provides a catalyst and the preparation process thereof and a process of epoxidising olefin using the catalyst. The catalyst contains a binder and a titanium silicate, the binder being an amorphous silica, the titanium silicate having a MFI structure, and the crystal grain of the titanium silicate having a hollow structure, with a radial length of 5-300 nm for the cavity portion of the hollow structure, wherein the adsorption capacity of benzene measured for the titanium silicate under the conditions of 25 degrees C., P/P=0.10 and 1 h of adsorption time is at least 70 mg/g, and there is a hysteresis loop between the adsorption isotherm and the desorption isotherm for nitrogen adsorption by the molecular sieve at a low temperature; wherein based on the total amount of the catalyst, the content of the binder is 3-15 wt %, and the content of the titanium silicate is 85-97 wt %; and the catalyst has a crushing strength value of not less than 60 N/cm measured according to GB3635-1983 standard method. The catalyst according to the present invention has high strength, and shows high catalytic activity in the epoxidation of olefins. 1. A catalyst containing a binder and a titanium silicate , said binder being an amorphous silica , said titanium silicate having a MFI structure , and the crystal grain of said titanium silicate having a hollow structure , with a radial length of 5-300 nm for the cavity portion of the hollow structure , wherein the adsorption capacity of benzene measured for the titanium silicate under the conditions of 25 degrees C. , P/P=0.10 and 1 h of adsorption time is at least 70 mg/g , and there is a hysteresis loop between the adsorption isotherm and the desorption isotherm for nitrogen adsorption by the molecular sieve at a low temperature; characterized in that based on the total amount of the catalyst , the content of said binder is 3-15 wt % , the content of said titanium silicate is 85-97 wt %; and said catalyst has a crushing ...

Подробнее
Номер записи: 15
26-09-2013 дата публикации

PROCESS FOR THE START-UP OF AN EPOXIDATION PROCESS

Номер: US20130253209A1
Автор: Yeates Randall Clayton
Принадлежит: SHELL OIL COMPANY

The present disclosure provides processes for the start-up of an ethylene epoxidation process comprising: 1. A process for the start-up of an ethylene epoxidation process comprising:a. contacting a high selectivity epoxidation catalyst with a feed comprising ethylene, oxygen and an organic chloride for a period of time such that vinyl chloride is produced and capable of being detected in a reactor outlet stream or a recycle gas loop;b. increasing the temperature of the high selectivity epoxidation catalyst to at least about 220° C.;c. subsequently reducing the level of organic chloride in the feed over a period of from about 12 to about 36 hours so as to increase the temperature of the catalyst to a temperature of from about 250° C. to about 265° C.; andd. subsequently adjusting the level of organic chloride in the feed to a value sufficient to produce ethylene oxide at a substantially optimum selectivity at a temperature of from about 250° C. to about 265° C.2. The process of wherein at least 1×10mole-% of vinyl chloride is detected in the reactor outlet stream or the recycle gas loop.3. The process of wherein the feed in step (a) comprises organic chloride in a quantity of from about 1 to about 12 millimolar equivalent of chloride per kilogram of catalyst.4. The process of wherein the feed in step (c) comprises organic chloride in a quantity of from about 25 to about 75 weight percent of the quantity of organic chloride present in the feed in step (a).5. The process of wherein the level of organic chloride added to the feed in step (c) is zero.6. The process of wherein the organic chloride is selected from the group consisting of methyl chloride claim 1 , ethyl chloride claim 1 , ethylene dichloride claim 1 , vinyl chloride and mixtures thereof.7. The process of further comprising:e. subsequently heating the high selectivity epoxidation catalyst to a temperature of from about 250° C. to about 275° C. for a period of time between about 12 to about 150 hours.8. The ...

Подробнее
Номер записи: 16
03-10-2013 дата публикации

PROCESS FOR THE EPOXIDATION OF FATTY ACIDS, THEIR ESTERS AND MIXTURES THEREOF

Номер: US20130261322A1
Автор: Darbha Srinivas, Satyarthi Jitendra Kumar
Принадлежит: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH

The present invention relates to an improved process for preparing mono and poly epoxy functionalized fatty acids, their esters and mixtures thereof using solid catalyst i.e. supported group VIb metal oxide, said support comprising silica, alumina and mixtures thereof, optionally with a promoter from group VA wherein the group VIB metal oxide content in the catalyst is 5-20 wt % of support. 1. An improved process for the epoxidation of mono and polyenic fatty acids , their esters or mixtures thereof using solid catalyst and the said process which comprises contacting mono and polyenic fatty acids , their esters or mixtures thereof with a peroxide in the presence of a solid catalyst for a period in the range of 0.5 to 6 hr at a temperature in the range of 40 to 120° C. followed by separation of the epoxide product from the reaction mixture to obtain mono and poly epoxy functionalized fatty acids , their esters or mixtures thereof wherein the amount of side products of the process is less than 1% and said solid catalyst is a supported group VIB metal oxide , said support comprising silica , alumina and mixtures thereof , optionally with a promoter from group VA wherein the group VIB metal oxide content in the catalyst is 5-20 wt % of support.2. The improved process as claimed in claim 1 , wherein fatty acids and their esters are derived from vegetable oils or animal fat.3. The improved process as claimed in claim 1 , wherein the fatty acid ester is an alkyl ester claim 1 , preferably glyceryl or methyl esters of fatty acids.4. The improved process as claimed in claim 1 , wherein peroxide used is selected from hydrogen peroxide or organic hydroperoxide preferably tert. butyl hydroperoxide.5. The improved process as claimed in claim 1 , wherein the molar ratio of peroxide to unsaturated bonds in the fatty acids claim 1 , their esters or mixtures thereof is in the range 1 to 4 preferably in the range 1.1 to 1.5.6. The improved process as claimed in claim 1 , wherein said ...

Подробнее
Номер записи: 17
03-10-2013 дата публикации

INTEGRATED METHODS OF PREPARING RENEWABLE CHEMICALS

Номер: US20130261323A1
Автор: Al Obaidi Yassin, Griffith Josefa M., Gruber Patrick R., Henton David E., Manzer Leo E., Peters Matthew W., Taylor Joshua D.
Принадлежит: GEVO, INC.

Isobutene, isoprene, and butadiene are obtained from mixtures of Cand/or Colefins by dehydrogenation. The Cand/or Colefins can be obtained by dehydration of Cand Calcohols, for example, renewable Cand Calcohols prepared from biomass by thermochemical or fermentation processes. Isoprene or butadiene can be polymerized to form polymers such as polyisoprene, polybutadiene, synthetic rubbers such as butyl rubber, etc. in addition, butadiene can be converted to monomers such as methyl methacrylate, adipic acid, adiponitrile, 1,4-butadiene, etc. which can then be polymerized to form nylons, polyesters, polymethylmethacrylate etc. 1. An integrated process for preparing renewable hydrocarbons , comprising:(a) providing renewable isobutanol and renewable ethanol;(b) dehydrating the renewable isobutanol, thereby forming a renewable butene mixture comprising one or more renewable linear butenes and renewable isobutene;(c) dehydrating the renewable ethanol, thereby forming renewable ethylene; and{'sub': 3', '16, '(d) reacting at least a portion of the renewable butene mixture and at least a portion of the renewable ethylene to form one or more renewable C-Colefins.'}257-. (canceled)58. The integrated process of claim 1 , wherein the one or more renewable linear butenes comprise one or more of 1-butene claim 1 , cis-2-butene or trans-2-butene.59. The integrated process of claim 1 , wherein said reacting of step (d) comprises one or more reactions selected from the group consisting of disproportionation claim 1 , metathesis claim 1 , oligomerization claim 1 , isomerization claim 1 , alkylation claim 1 , dehydrodimerization claim 1 , dehydrocyclization claim 1 , and combinations thereof.60. The integrated process of claim 1 , wherein said reacting of step (d) comprises disproportionating at least a portion of the renewable ethylene formed in step (c) claim 1 , and at least a portion of the renewable 2-butene formed in step (b) and renewable 2-butene formed by isomerizing the ...

Подробнее
Номер записи: 18
10-10-2013 дата публикации

PROCESS FOR PREPARING DINVINYLARENE OXIDES

Номер: US20130267720A1
Автор: FAN William W., Gu Leming, Hook Bruce D., Jean David, Ripplinger Eric B., West David H.
Принадлежит: Dow Global Technologies LLC

A process for preparing a divinylarene oxide including (a) reacting (i) at least one divinylarene; (ii) at least one peroxycarboximidic acid; (iii) at least one solvent; and (iv) at least one basic compound, under reaction conditions to form a reaction of fluent containing a divinylarene oxide product; and then (b) evaporating the reaction effluent of step (a) to form a concentrate containing the divinylarene oxide product; and wherein the concentrate separates into two liquid phases. 1. A process for manufacturing at least one divinylarene oxide comprising the steps of:(a) reacting (i) at least one divinylarene with (ii) at least one peroxycarboximidic acid epoxidizing agent in the presence of (iii) at least one solvent and (iv) at least one basic compound, to form a reaction effluent comprising at least one divinylarene oxide and at least one amide;(b) removing at least a portion of at least one lights from the reaction effluent of step (a) forming a biphasic liquid concentrate comprising (b1) an organic phase containing at least a portion of the at least one divinylarene oxide and (b2) an aqueous phase; and(c) separating the organic phase containing the at least one divinylarene oxide from the aqueous phase.2. The process of claim 1 , including step (d) recycling the lights from step (b) back to step (a).3. The process of claim 1 , wherein greater than about 50 percent of the mass of the at least one divinylarene oxide in the reaction effluent of step (a) is present in the organic phase after step (b); and wherein greater than about 50 percent of the mass of the amide in the reaction effluent of step (a) is present in the aqueous phase after step (b).4. The process of claim 1 , including (d) purifying the organic phase containing the at least one divinylarene oxide of step (c) to prepare a purified divinylarene oxide product with greater than about 60 percent purity.5. The process of claim 1 , wherein the removing step (b) is carried out by evaporation; and ...

Подробнее
Номер записи: 19
31-10-2013 дата публикации

Epoxidation reactions and operating conditions thereof

Номер: US20130288379A1
Автор: Albert C. Liu, Hwaili Soo, Michael Habenschuss, Paul V. Hinman
Принадлежит: DOW TECHNOLOGY INVESTMENTS LLC

A method of producing an alkylene oxide includes passing a reaction mixture comprising alkylene, oxygen and a gaseous chlorine-containing promoter species over a supported catalyst containing silver and a promoting amount of rhenium to undergo an epoxidation reaction at a first operating condition. The method further includes subsequently performing the epoxidation reaction at a preferred operating condition. The preferred operating condition is characterized by an efficiency of the epoxidation reaction toward the alkylene oxide where the efficiency is lower than that of a maximum efficiency achievable at an operating temperature corresponding to the preferred operating condition.

Подробнее
Номер записи: 20
14-11-2013 дата публикации

Process for the manufacture of 1,2-epoxy-3-chloropropane

Номер: US20130303793A1
Автор: GILBEAU Patrick, Gillin Frederic
Принадлежит: SOLVAY SA

Process for the manufacture of 1,2-epoxy-3-chloropropane by reaction between allyl chloride and hydrogen peroxide in the presence of a solid catalyst and in the possible presence of at least one solvent in an epoxidation medium comprising at least two liquid phases under the conditions of reaction, wherein the catalyst exhibits an external surface to volume ratio lower than to 2.4 10m. 1. A process for the manufacture of 1 ,2-epoxy-3-chloropropane comprising a reaction between allyl chloride and hydrogen peroxide in the presence of a solid catalyst and in the optional presence of at least one solvent in an epoxidation medium comprising at least two liquid phases under the conditions of reaction , wherein the catalyst exhibits an external surface to volume ratio lower than to 2.4 10m.23-. (canceled)4. The process according to claim 1 , wherein the catalyst exhibits an external surface to volume ratio lower than or equal to 1.0 10m.59-. (canceled)10. The process according to claim 1 , wherein the solvent is selected from the group consisting of an alcohol claim 1 , a saturated aliphatic hydrocarbon optionally containing at least one halogen atom claim 1 , an unsaturated aliphatic hydrocarbon optionally containing at least one halogen atom claim 1 , an aromatic hydrocarbon optionally containing at least one of a halogen atom claim 1 , a nitrogen atom claim 1 , an alkyl group claim 1 , and any mixtures of at least two thereof.11. The process according to claim 10 , wherein the solvent is selected from the group consisting of methanol claim 10 , n-decane claim 10 , n-tridecane claim 10 , 1 claim 10 ,2 claim 10 ,3-trichloropropane claim 10 , decahydronaphtalene claim 10 , o-dichlorobenzene claim 10 , m-dichlorobenzene claim 10 , p-dichlorobenzene claim 10 , o-xylene claim 10 , m-xylene claim 10 , p-xylene claim 10 , 1 claim 10 ,3 claim 10 ,5-trimethylbenzene claim 10 , decaline claim 10 , o-chlorotoluene claim 10 , m-chlorotoluene claim 10 , p-chlorotoluene claim 10 , ...

Подробнее
Номер записи: 21
21-11-2013 дата публикации

SEPARATING PHASES OF A MIXTURE

Номер: US20130310583A1
Автор: Carlberg Philip J., Crampton Hannah L., Longoria Joe J.
Принадлежит: Dow Global Technologies LLC

Embodiments of the present disclosure include a process for separating phases of a mixture including a liquid aqueous phase, a liquid organic phase, and a solid phase and extracting at least an oxirane from the liquid aqueous phase with an extraction solvent. 1. A process for separating phases of a mixture that contain an oxirane , comprising:receiving the mixture including a liquid aqueous phase, a liquid organic phase, the oxirane, and a solid phase titanium-silicalite catalyst;separating the mixture to into the liquid aqueous phase that includes at least water, a peroxide compound, an alcohol and an olefin and the liquid organic phase that includes at least the olefin and a non-reactive co-solvent, where both the liquid aqueous phase and the liquid organic phase include the oxirane and wherein the liquid organic phase has a density greater than the liquid aqueous phase, the solid phase titanium-silicalite catalyst has a density greater than the liquid organic phase, and the solid phase titanium-silicalite catalyst has an affinity for the liquid aqueous phase, and where a first part of the solid phase titanium-silicalite catalyst remains suspended in the liquid aqueous phase and a second part of the solid phase titanium-silicalite catalyst settles through the liquid organic phase to a density driven position;recovering the liquid aqueous phase including the first part of the solid phase titanium-silicalite catalyst; andextracting at least the oxirane from the liquid aqueous phase with an extraction solvent.2. The process of claim 1 , wherein the solid phase titanium-silicalite catalyst includes a polar group claim 1 , a charged group or a combination thereof.3. The process of claim 1 , wherein the first part of the solid phase titanium-silicalite catalyst is greater than 50 weight percent claim 1 , based on a total weight of the solid phase titanium-silicalite catalyst.4. The process of claim 1 , further including recovering the liquid organic phase from a point ...

Подробнее
Номер записи: 22
21-11-2013 дата публикации

OLEFIN EPOXIDATION PROCESS

Номер: US20130310584A1
Автор: EVANS Wayne Errol, Kobe Jeffrey Michael, MCALLISTER Paul Michael, Yeates Randall Clayton
Принадлежит: SHELL OIL COMPANY

A process for the production of an olefin oxide, which process comprises reacting a feed comprising an olefin and oxygen in a reactor tube in the presence of a silver-containing catalyst, wherein the presence of water in the catalyst bed is controlled such that the ratio of the partial pressure of water (PPHO) divided by the vapor pressure of water (VPHO) is less than 0.006, preferably less than 0.004. 1. A process for the production of ethylene oxide, which process comprises reacting a feed comprising ethylene and oxygen in the presence of a catalyst bed comprising silver-containing catalyst loaded in a reactor tube, wherein the presence of water at any point in the catalyst bed is controlled such that the ratio of the partial pressure of water (PPHO) divided by the vapor pressure of water (VPHO) is less than 0.006. The present application is a continuation of U.S. application Ser. No. 13/246,325 filed Sep. 27, 2011, which claims the benefit of U.S. Provisional Application No. 61/387,858 filed Sep. 29, 2010, both of which are incorporated herein by reference.The present invention relates to a process for the production of an olefin oxide, a 1,2-diol, a 1,2-diol ether, 1,2-carbonate or an alkanolamine.In olefin epoxidation an olefin is reacted with oxygen to form an olefin epoxide, using a catalyst comprising a silver component, usually with one or more further elements deposited therewith on a support. The olefin oxide may be reacted with water, an alcohol, carbon dioxide or an amine to form a 1,2-diol, a 1,2-diol ether, 1,2-carbonate or an alkanolamine. Thus, 1,2-diols, 1,2-diol ethers, 1,2-carbonates and alkanolamines may be produced in a multi-step process comprising olefin epoxidation and converting the formed olefin oxide with water, an alcohol, carbon dioxide or an amine.The performance of the epoxidation process may be assessed on the basis of the selectivity, the catalyst's activity and stability of operation. The selectivity is the molar fraction of the ...

Подробнее
Номер записи: 23
09-01-2014 дата публикации

EPOXIDATION PROCESSES

Номер: US20140012019A1
Автор: Liu Albert C., Soo Hwaili
Принадлежит: DOW TECHNOLOGY INVESTMENTS, LLC

The present invention provides rhenium-promoted epoxidation catalysts based upon shaped porous bodies comprising a minimized percentage of their total pore volume being present in pores having diameters of less than one micron, and a surface area of at least about 1.0 m/g. Processes of making the catalysts and using them in epoxidation processes are also provided. 114-. (canceled)15. An epoxidation process , comprising reacting , under epoxidation conditions , a feed comprising ethylene and oxygen in the presence of an epoxidation catalyst comprising silver and a promoting amount of rhenium deposited on a shaped porous body , wherein the shaped porous body comprises less than 20% of its total pore volume being present in pores having diameters of less than 1 micron , and a surface area of at least about 1.3 m/g , wherein the catalyst exhibits a higher activity and/or selectivity when used in the process than a catalyst supported on shaped porous bodies having a greater percentage of their total pore volume in pores having diameters of less than one micron.1618-. (canceled)19. The process of claim 15 , carried out in the gas phase.20. The process of claim 19 , conducted at a temperature of from 200° C. to 300° C.21. The process of or claim 19 , conducted at a pressure of from ambient to 3.0 MPa.22. The process of claim 15 , further comprising converting the ethylene oxide produced into a 1 claim 15 ,2-diol claim 15 , 1 claim 15 ,2-diol ether claim 15 , a 1 claim 15 ,2-carbonate claim 15 , or alkanolamine.23. The process of claim 22 , wherein the conversion comprises reacting the ethylene oxide with water and/or alcohol to produce one or more 1 claim 22 ,2-diols or 1 claim 22 ,2-diol ethers.24. The process of claim 23 , wherein reaction of ethylene oxide and water is conducted in the presence of an acidic or basic catalyst.25. The process of claim 24 , wherein the catalyst is acidic and comprises 0.5 wt % to 1.0 wt % sulfuric acid.26. The process of or claim 24 , ...

Подробнее
Номер записи: 24
09-01-2014 дата публикации

PROCESS FOR CONDITIONING A HIGH EFFICIENCY ETHYLENE OXIDE CATALYST

Номер: US20140012022A1
Автор: Hinman Paul Victor, Phillips Ailene Gardner, Soo Hwaili, Tupe Ravindra Radhakisan, Zhang Liping
Принадлежит: DOW TECHNOLOGY INVESTMENTS LLC

A process for conditioning a high efficiency silver catalyst used to manufacture ethylene oxide from ethylene, oxygen, and at least one organic chloride is described. A non-reactive conditioning gas comprising at least one of ethylene, oxygen, and a ballast gas is introduced to the catalyst at a conditioning temperature ranging from 150° C. to 180° C. for a selected period of at least 4 hours. 1. A process for conditioning a high efficiency silver catalyst used to manufacture ethylene oxide by reacting ethylene , oxygen , and at least one organic chloride over the catalyst , the conditioning process comprising the steps of:introducing a feed gas to the high efficiency silver catalyst at one or more conditioning temperatures ranging from 150° C. to 180° C. for a selected period of time, wherein the selected period of time is at least 4 hours, and the feed gas comprises at least one component selected from the group consisting of ethylene, methane, and nitrogen, and the introducing step occurs such that the catalyst is not simultaneously exposed to ethylene and oxygen during the selected period of time.2. The process for conditioning a high efficiency silver catalyst of claim 1 , wherein the high efficiency silver catalyst is a fresh catalyst.3. The process for conditioning a high-efficiency silver catalyst of claim 1 , wherein the selected period of time is at least 12 hours.4. The process for conditioning a high-efficiency silver catalyst of claim 1 , wherein the selected period of time is no greater than 200 hours.5. The process for conditioning a high-efficiency silver catalyst of claim 1 , wherein the at least one component is ethylene and nitrogen.6. The process for conditioning a high-efficiency silver catalyst of claim 1 , wherein the at least one component is nitrogen.7. The process for conditioning a high-efficiency silver catalyst of claim 1 , wherein the high-efficiency silver catalyst is an aged catalyst.8. The process for conditioning a high-efficiency ...

Подробнее
Номер записи: 25
16-01-2014 дата публикации

PROCESS FOR THE PRODUCTION OF ETHYLENE OXIDE

Номер: US20140018556A1
Автор: VAN WESTRENEN Jeroen, Verhaak Michiel Johannes Franciscus Maria
Принадлежит:

The invention relates to a process for the production of ethylene oxide, comprising the steps of: producing ethylene by converting a stream comprising an oxygenate into a stream comprising ethylene and ethane; producing ethylene oxide by subjecting ethylene and ethane from the stream comprising ethylene and ethane to oxidation conditions resulting in a stream comprising ethylene oxide, unconverted ethylene and ethane; and recovering ethylene oxide from the stream comprising ethylene oxide, unconverted ethylene and ethane. 1. A process for the production of ethylene oxide , comprising the steps of:producing ethylene by converting a stream comprising an oxygenate into a stream comprising ethylene and ethane;producing ethylene oxide by subjecting ethylene and ethane from the stream comprising ethylene and ethane to oxidation conditions resulting in a stream comprising ethylene oxide, unconverted ethylene and ethane; andrecovering ethylene oxide from the stream comprising ethylene oxide, unconverted ethylene and ethane.2. A process according to claim 1 , wherein a stream comprising unconverted ethylene and ethane is separated from the stream comprising ethylene oxide claim 1 , unconverted ethylene and ethane and is recycled to the step of producing ethylene oxide.3. A process according to claim 1 , wherein the stream comprising ethylene and ethane further comprises methane.4. A process according to claim 1 , wherein the stream comprising ethylene and ethane further comprises acetylene and the stream comprising ethylene and ethane is subjected to hydrotreatment to convert any acetylene prior to subjecting ethylene and ethane from the stream comprising ethylene and ethane to oxidation conditions.5. A process according to claim 4 , wherein the stream comprising ethylene and ethane further comprises hydrogen and at least part of the hydrogen is used to convert at least part of the acetylene.6. A process for the production of ethylene oxide claim 4 , comprising the steps of: ...

Подробнее
Номер записи: 26
16-01-2014 дата публикации

Process for the production of ethylene oxide

Номер: US20140018557A1
Автор: Michiel Johannes Franciscus Maria Verhaak
Принадлежит: Individual

The invention relates to a process for the production of ethylene oxide, comprising the steps of producing ethylene resulting in a stream comprising ethylene and ethane; producing ethylene oxide by subjecting ethylene and ethane from the stream comprising ethylene and ethane to oxidation conditions resulting in a stream comprising ethylene oxide, unconverted ethylene and ethane; and recovering ethylene oxide from the stream comprising ethylene oxide, unconverted ethylene and ethane.

Подробнее
Номер записи: 27
23-01-2014 дата публикации

METHOD OF STARTING-UP A PROCESS OF PRODUCING AN ALKYLENE OXIDE USING A HIGH-EFFICIENCY CATALYST

Номер: US20140024846A1
Автор: Basrur Arun G., Hinman Paul V., Soo Hwaili, Tupe Ravindra R.
Принадлежит: DOW TECHNOLOGY INVESTMENTS LLC

A method for starting-up a high efficiency alkylene oxide catalyst is described. A feed gas comprising an alkylene, oxygen, and at least one organic chloride is introduced to the catalyst. The molar ratio of oxygen to alkylene, reaction temperature, and overall chloriding effectiveness are adjusted to specified ranges of values within a specified catalyst aging period. 2. The method of claim 1 , further comprising selecting a target alkylene oxide concentration in the reaction product and maintaining the molar ratio of oxygen to alkylene of at least 0.2 no longer than until the start-up concentration of the alkylene oxide in the reaction product is substantially equal to the target concentration of the alkylene oxide in the reaction product.3. The method claim 2 , wherein the step of maintaining the molar ratio of oxygen to the alkylene in the feed gas of at least 0.2 is conducted no longer than until the efficiency of the process to the alkylene oxide is at least 85%.4. The method of claim 2 , wherein the step of maintaining the molar ratio of oxygen to the alkylene in the feed gas of at least 0.2 is conducted no longer than until the start-up concentration of the alkylene oxide in the reaction product is at least 1.5 mole %.5. The method of claim 1 , wherein the step of adjusting both the reaction temperature and the overall chloriding effectiveness comprises adjusting at least one of the reaction temperature and Z* according to the following relationship:{'br': None, 'i': Z*', 'T', '−T', 'S, 'sub': rx', 'o', 'o, '=()/'} [{'sub': 'rx', 'Tis the reactor coolant inlet temperature in ° C.,'}, {'sub': o', 'rx, 'Tis the temperature-axis intercept calculated by extrapolating a plot of Z* versus Tto Z*=0, and'}, {'sub': 'o', 'Sis a slope relating the change in inlet coolant temperature to the corresponding change in Z*.'}], 'wherein,'}6. The method of claim 1 , wherein within a catalyst aging period of no greater than 0.02 kT alkylene oxide/mcatalyst after the reactor is ...

Подробнее
Номер записи: 28
30-01-2014 дата публикации

EPOXIDATION PROCESS

Номер: US20140031568A1
Автор: Durand Jason, Morin Rudy Anthony, Rokicki Andrzej, Suchanek Wojciech
Принадлежит:

A method for producing ethylene oxide comprising: providing one or more feed components, wherein the one or more feed components contains at least ethylene obtained by dehydrating ethanol; contacting the one or more feed components with a desulfurization catalyst comprising a high surface area support and an amount of silver, wherein at least 20% of the silver is present as oxidized silver; and contacting the one or more feed components with a silver-containing epoxidation catalyst disposed inside an ethylene oxide reactor to form a reaction gas comprising ethylene oxide. 1. A method for producing ethylene oxide comprising:a) providing one or more feed components, wherein the one or more feed components contains at least ethylene obtained by dehydrating ethanol;b) contacting the one or more feed components with a desulfurization catalyst comprising a high surface area support and an amount of silver, wherein at least 20% of the silver is present as oxidized silver; andc) contacting the one or more feed components with a silver-containing epoxidation catalyst disposed inside an ethylene oxide reactor to form a reaction gas comprising ethylene oxide.2. The method according to claim 1 , wherein the one or more feed components further comprises oxygen and a ballast gas.3. The method according to claim 1 , wherein the process further comprises contacting the one or more feed components with the desulfurization catalyst at a temperature in a range of from about 40° C. to about 400° C.4. The method according to claim 1 , wherein the process further comprises contacting the one or more feed components with the desulfurization catalyst at a pressure in a range of from 0 atm to 50 atm.5. The method according to claim 1 , wherein the process further comprises contacting the one or more feed components with said desulfurization catalyst positioned inside a desulfurization chamber that is located outside the ethylene oxide reactor.6. The method according to claim 1 , wherein the ...

Подробнее
Номер записи: 29
06-03-2014 дата публикации

METHOD OF SYNTHESIS OF SUBSTITUTED HEXITOLS SUCH AS DIANHYDROGALACTITOL

Номер: US20140066642A1
Автор: Brown Dennis M., Li Mike Tso-Ping
Принадлежит: Del Mar Pharmaceuticals

The present invention provides an efficient method of synthesizing and purifying dianhydrohexitols such as dianhydrogalactitol. In general, as applied to dianhydrogalactitol, the method comprises: (1) reacting dulcitol with a concentrated solution of hydrobromic acid at a temperature of about 80° C. to produce dibromogalactitol; (2) reacting the dibromogalactitol with potassium carbonate in t-butanol to produce dianhydrogalactitol; and (3) purifying the dianhydrogalactitol using a slurry of ethyl ether to produce purified dianhydrogalactitol. Another method produces dianhydrogalactitol from dulcitol; this method comprises: (1) reacting dulcitol with a reactant to convert the 1,6-hydroxy groups of dulcitol to an effective leaving group to generate an intermediate; and (2) reacting the intermediate with an inorganic weak base to produce dianhydrogalactitol through an intramolecular S2 reaction. Other methods for the synthesis of dianhydrogalactitol from dulcitol are described. 1. A method for synthesizing and recrystallizing a dianhydrohexitol comprising the steps of:(a) converting a hexahydroxyl-substituted sugar alcohol to a dibromo derivative of the hexahydroxyl-substituted sugar alcohol by reaction of the dulcitol with hydrobromic acid for from about 18 hours to about 36 hours at an elevated temperature;(b) adding the product of step (a) to water, agitating the product of step (a) added to water for from about 18 hours to about 36 hours, filtering the mixture of the product of step (a) and water, washing the mixture with a large volume of water, drying the solid product under nitrogen, and then subsequently washing the dried solid product with a large volume of an aliphatic ether;(c) reacting the product of step (b) with a carbonate of an alkali metal in a polar aprotic solvent at an elevated temperature;(d) filtering the product of step (c) to remove the solids;(e) washing the solids removed in step (d) with a polar aprotic solvent and combining the washings with ...

Подробнее
Номер записи: 30
13-03-2014 дата публикации

METHOD FOR PRODUCING EPOXY COMPOUND

Номер: US20140073806A1
Автор: Ezaki Yoichiro, Sasagawa Naoki, Takumi Kiyoshi
Принадлежит: ARAKAWA CHEMICAL INDUSTRIES, LTD.

To provide a method for producing an epoxy compound having fewer residual quaternary salt compound by removing the quaternary salt compound from an organic solution containing an epoxy compound and the quaternary salt compound. 1. A method for producing an epoxy compound comprising the following step 1 , step 2 , and step 3:step 1: a step in which in a mixture liquid containing an olefin compound, an aqueous hydrogen peroxide solution, a quaternary salt compound, a heteropoly acid, and an organic solvent, the olefin compound is subjected to the oxidation reaction to obtain an organic solution (A) containing an epoxy compound,step 2: a step in which an aqueous inorganic alkali solution is allowed to contact with the organic solution (A) to obtain an organic solution (B) containing the epoxy compound, andstep 3: a step in which an acidic aqueous solution containing a polymer having at least one functional group selected from the group consisting of a carboxyl group and a sulfonic acid group is allowed to contact with the organic solution (B) to obtain an organic solution (C) containing the epoxy compound.2. The production method according to claim 1 , wherein the olefin compound is at least one compound selected from the group consisting of a cyclic olefin compound and a long-chain linear olefin compound.3. The production method according to claim 1 , wherein the amount used of the hydrogen peroxide is 0.001 to 10 equivalents per one carbon-carbon double bond contained in the olefin compound.4. The production method according to any one of claims 1 , wherein the quaternary salt compound is a quaternary ammonium salt compound having at least one alkyl group with 6 to 20 carbon atoms in the molecule.5. The production method according to any one of claims 1 , wherein the amount used of the quaternary salt compound is 0.0001 to 20 moles per 100 moles of the olefin compound.6. The production method according to any one of claims 1 , wherein the amount used of the ...

Подробнее
Номер записи: 31
20-03-2014 дата публикации

METHOD OF QUALIFYING MATERIAL FOR USE IN CLEANING OF ALKYLENE OXIDE EQUIPMENT

Номер: US20140080219A1
Автор: Hinman Paul Victor
Принадлежит: DOW TECHNOLOGY INVESTMENTS, LLC

The present invention relates to methods for qualifying material for using in the cleaning of alkylene oxide equipment. Qualified material is not expected to contribute to the formation of determinable amounts of alkylene oxide by-products. Methods of cleaning alkylene oxide equipment, and alkylene oxide processes incorporating these methods are also provided. 1. A method for qualifying a material for use in cleaning of alkylene oxide equipment , comprising:Determining a pre-contact amount of one or more alkylene oxide by-products in an alkylene oxide feed;Causing the material and the alkylene oxide feed to contact each other;Determining a post-contact amount of one or more alkylene oxide by-products in the feed after contact; andComparing the pre-contact amount to the post-contact amount, and if the pre-contact amount is greater than or equal to the post-contact amount, qualifying the material for use in the cleaning of the alkylene oxide reactor.2. The method of claim 1 , wherein the alkylene oxide feed comprises substantially pure alkylene oxide claim 1 , and the step of determining the pre-contact amount comprises assuming the pre-contact amount of the one or more alkylene oxide by-products to be substantially zero.3. The method of claim 2 , wherein if the post-contact amount is greater than zero claim 2 , the material is disqualified for use in the cleaning of alkylene oxide reactors.4. The method of claim 3 , wherein the step of determining the post-contact amount comprises conducting a qualitative measurement.5. The method of claim 1 , wherein the alkylene oxide feed comprises a feed introduced into and/or generated by an alkylene oxide process and wherein the step of determining the pre-contact amount comprises conducting a quantitative measurement of one or more alkylene oxide by-products in the feed prior to contact with the material.6. The method of claim 1 , wherein the alkylene oxide feed comprises a feed introduced into and/or generated by an alkylene ...

Подробнее
Номер записи: 32
02-01-2020 дата публикации

METHODS FOR CONDITIONING AN ETHYLENE EPOXIDATION CATALYST AND ASSOCIATED METHODS FOR THE PRODUCTION OF ETHYLENE OXIDE

Номер: US20200001277A1
Автор: LOCKEMEYER John Robert, MATUSZ Marek, PADDOCK Robert Lewis, Yeates Randall Clayton
Принадлежит:

Methods for conditioning an ethylene epoxidation catalyst are provided. The conditioning methods comprise contacting an ethylene epoxidation catalyst comprising a carrier, having silver and a rhenium promoter deposited thereon, with a conditioning feed gas comprising oxygen for a period of time of at least 2 hours at a temperature that is above 180° C. and at most 250° C., wherein the contacting of the ethylene epoxidation catalyst with the conditioning feed gas occurs in an epoxidation reactor and in the absence of ethylene. Associated methods for the epoxidation of ethylene are also provided. 1. A method for the conditioning of an ethylene epoxidation catalyst comprising:contacting an ethylene epoxidation catalyst comprising a carrier, having silver and a rhenium promoter deposited thereon, with a conditioning feed gas comprising oxygen for a period of time of at least 2 hours at a temperature that is above 180° C. and at most 250° C., wherein the contacting of the ethylene epoxidation catalyst with the conditioning feed gas occurs in an epoxidation reactor and in the absence of ethylene.2. The method of wherein the conditioning gas further comprises an inert gas and an organic chloride.3. The method of wherein the temperature is from at least 185° C. to at most 250° C.4. The method of wherein the temperature is from at least 185° C. to at most 245° C.5. The method of wherein the conditioning feed gas comprises oxygen in a concentration of from 0.5 to 21 mole-% claim 1 , relative to the total conditioning feed gas.6. The method of wherein the period of time is from 2 hours to 200 hours.7. The method of wherein the period of time is from 2 hours to 72 hours.8. The method of further comprising contacting the ethylene epoxidation catalyst with a sweeping gas.9. A method for the epoxidation of ethylene comprising:contacting an ethylene epoxidation catalyst comprising a carrier, having silver and a rhenium promoter deposited thereon, with a conditioning feed gas ...

Подробнее
Номер записи: 33
04-01-2018 дата публикации

INTEGRATED PROCESS FOR MAKING PROPENE OXIDE AND AN ALKYL TERT-BUTYL ETHER

Номер: US20180002299A1
Автор: BOLZ David, WIEDERHOLD Holger
Принадлежит:

An integrated process for making propene oxide and an alkyl tert-butyl ether comprises dehydrogenating a feed stream comprising iso-butane to provide a stream comprising iso-butene and hydrogen and separating this stream into a stream consisting essentially of hydrogen and a stream comprising iso-butene; reacting a part or all of the stream comprising iso-butene with an alkanol in the presence of a solid acid catalyst to provide an alkyl tert-butyl ether; reacting a part or all of the stream consisting essentially of hydrogen with oxygen, providing a stream comprising hydrogen peroxide; and reacting a part or all of the stream comprising hydrogen peroxide with propene in the presence of an epoxidation catalyst to provide propene oxide. 19-. (canceled)10. An integrated process for making propene oxide and an alkyl tert-butyl ether , comprising:a) a step of dehydrogenating a feed stream S1 comprising iso-butane, to provide a stream, S2, comprising iso-butene and hydrogen;b) a separation step separating stream S2 into a stream, S3, consisting essentially of hydrogen and a stream, S4, comprising iso-butene;c) a step of reacting a part or all of stream S4 with an alkanol in the presence of a solid acid catalyst, to provide a stream, S5, comprising an alkyl tert-butyl ether;d) a separation step separating the alkyl tert-butyl ether from stream S5;e) a step of reacting a part or all of stream S3 with oxygen, to provide a stream, S6, comprising hydrogen peroxide;f) a step of reacting a part or all of stream S6 with propene in the presence of an epoxidation catalyst, to provide a stream, S7, comprising propene oxide; andg) a separation step separating propene oxide from stream S7.11. The process of claim 10 , wherein the alkanol is methanol.12. The process of claim 10 , wherein a stream claim 10 , S8 claim 10 , comprising unreacted iso-butane is separated in step d) claim 10 , a stream S9 comprising more than 80% by weight iso-butane is separated from stream S8 and stream S9 ...

Подробнее
Номер записи: 34
04-01-2018 дата публикации

INTEGRATED PROCESS FOR MAKING PROPENE OXIDE AND AN ALKYL TERT-BUTYL ETHER

Номер: US20180002300A1
Автор: BOLZ David, WIEDERHOLD Holger
Принадлежит:

An integrated process for making propene oxide and an alkyl tert-butyl ether comprises dehydrogenating a feed stream comprising propane and iso-butane to provide a stream comprising propene, iso-butene and hydrogen; separating this stream into a stream consisting essentially of hydrogen and a stream comprising propene and iso-butene; separating the stream comprising propene and iso-butene into a stream comprising propene and a stream comprising iso-butene; reacting a part or all of the stream comprising iso-butene with an alkanol in the presence of a solid acid catalyst to provide an alkyl tert-butyl ether; and reacting a part or all of the stream comprising propene with hydrogen peroxide in the presence of an epoxidation catalyst to provide propene oxide. 110-. (canceled)11. An integrated process for making propene oxide and an alkyl tert-butyl ether comprising;{'b': 1', '2, 'a) a step of dehydrogenating a feed stream, S, comprising propane and iso-butane, to provide a stream, S, comprising propene, iso-butene and hydrogen;'}{'b': 2', '3', '4, 'b) a separation step separating stream S into a stream, S, consisting essentially of hydrogen and a stream, S, comprising propene and iso-butene;'}{'b': 4', '5', '6, 'c) a separation step separating stream S into a stream, S, comprising propene and a stream, S, comprising iso-butene;'}{'b': 5', '7, 'd) a step of reacting a part or all of stream S with hydrogen peroxide in the presence of an epoxidation catalyst to provide a stream, S, comprising propene oxide;'}{'b': '7', 'e) a separation step separating propene oxide from stream S;'}{'b': 6', '8, 'f) a step of reacting a part or all of stream S with an alkanol in the presence of a solid acid catalyst, to provide a stream, S, comprising an alkyl tert-butyl ether; and'}{'b': '8', 'g) a separation step separating the alkyl tert-butyl ether from stream S.'}12. The process of claim 11 , wherein the alkanol is methanol.13595. The process of claim 11 , wherein unreacted propane is ...

Подробнее
Номер записи: 35
03-01-2019 дата публикации

PROCESS FOR THE EPOXIDATION OF PROPENE TO PROPYLENE OXIDE

Номер: US20190002422A1
Автор: Madenjian Edward O., Marshall Kenric A.
Принадлежит:

A continuous process for the preparation of propylene oxide, comprising providing a liquid feed stream comprising propene, hydrogen peroxide, methanol, water, at least one dissolved potassium salt of hydroxyethylidenediphosphonic acid, and optionally propane; passing the liquid feed stream provided in (i) into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MFI, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation reactor, obtaining a reaction mixture comprising propylene oxide, methanol, water, and the at least one dissolved potassium salt of hydroxyethylidenediphosphonic acid, and optionally propane; removing an effluent stream from the epoxidation reactor, the effluent stream comprising propylene oxide, methanol, water, at least a portion of the at least one potassium salt of hydroxyethylidenediphosphonic acid, and optionally propane. 1. A continuous process for preparing propylene oxide , the process comprising:(i) passing a liquid feed stream, comprising propene, hydrogen peroxide, methanol, water, at least one dissolved potassium salt of hydroxyethylidene diphosphonic acid, and optionally propane, into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MFI, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation reactor, to obtain a reaction mixture comprising propylene oxide, methanol, water, and the at least one dissolved potassium salt of hydroxyethylidene diphosphonic acid, and optionally propane; and(ii) removing an effluent stream from the epoxidation reactor, the effluent stream comprising propylene oxide, methanol, water, at least a portion of the at least one potassium salt of hydroxyethylidenediphosphonic acid, and optionally propane.2. The process of claim 1 , wherein the molar ratio of potassium relative to phosphorus in the at least one potassium salt of hydroxyethylidene diphosphonic ...

Подробнее
Номер записи: 36
07-01-2021 дата публикации

Propene recovery by scrubbing with a solvent/water mixture

Номер: US20210002241A1
Автор: Andrei-Nicolae Parvulescu, Bernd Metzen, Christian Mueller, Daniel Urbanczyk, Dominic RIEDEL, Joaquim Henrique Teles, Markus Weber, Marvin KRAMP, Nicolai Tonio Woerz, Ulrich MUELLERE, Ulrike Wegerle
Принадлежит: BASF SE

The invention relates to a process for preparing propylene oxide, comprising (i) providing a stream comprising propene, propane, hydrogen peroxide or a source of hydrogen peroxide, water, and an organic solvent; (ii) passing the liquid feed stream provided in (i) into an epoxidation zone comprising an epoxidation catalyst comprising a titanium zeolite, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propene, propane, propylene oxide, water, and the organic solvent; (iii) removing an effluent stream from the epoxidation zone, the effluent stream comprising propene, propane, propylene oxide, water, and the organic solvent; (iv) separating propene and propane from the effluent stream by distillation, comprising subjecting the effluent stream to distillation conditions in a distillation unit, obtaining a gaseous stream (S1) which is enriched in propene and propane compared to the effluent stream subjected to distillation conditions, and a liquid bottoms stream (S2) which is enriched in propylene oxide, water and organic solvent compared to the effluent stream subjected to distillation conditions; (v) separating propane from the stream (S1) in a separation zone, comprising subjecting the stream (S1) to washing conditions in a scrubber, wherein a solvent mixture comprising organic solvent and water is added as entraining agent, obtaining a bottoms stream (S3), which comprises organic solvent, water and at least 70 weight-% of the propene comprised in (S1); and a gaseous top stream (S4), which comprises at least 5 weight-% of the propane comprised in stream (S1).

Подробнее
Номер записи: 37
13-01-2022 дата публикации

Process for the Oxidation of Carbon-Containing Organic Compounds with Electrochemically Generated Oxidizing Agents and Arrangement for Carrying Out the Process

Номер: US20220010443A1
Автор: MATTHÉE Thorsten, NEUBER Rieke, Waldvogel Siegfried, ZIRBES Michael
Принадлежит:

The invention relates to a process for the oxidation of carbon-containing organic compounds where the said compounds have at least one bond with a bond order >1, wherein an oxidizing of these carbon-containing organic compounds to be oxidized is performed with electrochemically generated C—O—O oxidizing agents, in particular peroxodicarbonate. Also described is the use of C—O—O oxidizing agents generated electrochemically from carbonate, in particular peroxodicarbonate, as oxidizing agents for the oxidation of carbon-containing organic compounds, in particular carbon-containing organic compounds where the said compounds have at least one bond with a bond order >1. Finally, an arrangement for the oxidation of carbon-containing organic compounds is provided, comprising a first unit for the electrochemical preparation of C—O—O oxidizing agents generated electrochemically from carbonate, in particular peroxodicarbonate, and a second unit for the oxidizing of the carbon-containing organic compound with the C—O—O oxidizing agent generated electrochemically from carbonate, in particular peroxodicarbonate. In this case, these two units are connected to one another in such a way that an ex situ generated oxidizing agent can be fed to the second unit. 1. A process for the oxidation of carbon-containing organic compounds that have at least one bond with bond order ≥1 , comprising the step ofoxidizing said carbon-containing organic compounds with one or more electrochemically generated C—O—O oxidants to produce one or more oxidized or oxygenated, carbon-containing organic compounds.2. The process for the oxidation of carbon-containing organic compounds as claimed in claim 1 , wherein the one or more C—O—O oxidants comprise peroxydicarbonate claim 1 , generated electrochemically from carbonate using an electrolysis assembly comprising at least one cathode claim 1 , at least one diamond-coated anode claim 1 , and a carbonate-containing electrolyte that is pumped at a flow rate ...

Подробнее
Номер записи: 38
14-01-2016 дата публикации

UNSATURATED FATTY ACID ESTER-BASED COMPOSITIONS USEFUL AS PLASTIC ADDITIVES

Номер: US20160009673A1
Автор: KAZEMIZADEH Mohammad R., Maixner David E.
Принадлежит: Arkema Inc.

Compositions useful as plastic additives may be prepared from renewable resources such as vegetable oils by functionalizing an unsaturated fatty acid ester with epoxy, acyloxy, and optionally alkoxy groups. 1. A compound comprised of a fatty acid ester moiety , wherein the fatty acid ester moiety comprises at least one epoxy group and wherein the fatty acid ester moiety is substituted at least with a first substituent which is a first acyloxy group and with a second substituent which is a second acyloxy group , which may be the same as or different from the first acyloxy group , or an alkoxy group , wherein the first substituent and the second substituent are substituted on adjacent carbon atoms in the fatty acid ester moiety.2. The compound of claim 1 , wherein the fatty acid ester moiety is selected from the group consisting of fatty acid monoesters claim 1 , monoglycerides claim 1 , diglycerides claim 1 , triglycerides claim 1 , and fatty acid esters of polyols other than glycerin.3. The compound of claim 1 , wherein the first acyloxy group is a C2-C24 aliphatic acyloxy group.4. The compound of claim 1 , wherein the first acyloxy group has a structure R—C(═O)—O— claim 1 , wherein R is a straight chain claim 1 , branched or alicyclic claim 1 , saturated or unsaturated hydrocarbyl group containing one to 23 carbon atoms.5. The compound of claim 1 , wherein the first acyloxy group is an acetoxy group.6. The compound of claim 1 , wherein the second substituent is a C2-C24 aliphatic acyloxy group.7. The compound of claim 1 , wherein the second substituent has a structure R—C(═O)—O— claim 1 , wherein R is a straight chain claim 1 , branched or alicyclic claim 1 , saturated or unsaturated hydrocarbyl group containing one to 23 carbon atoms.8. The compound of claim 1 , wherein the second substituent is a C1-C24 alkoxy group.9. The compound of claim 1 , wherein the second substituent has a structure R1—O— claim 1 , wherein R1 is a straight chain claim 1 , branched or ...

Подробнее
Номер записи: 39
09-01-2020 дата публикации

SELECTIVE SOLID CATALYST FOR TAIL END OF OLEFIN-EPOXIDATION FLOW REACTOR

Номер: US20200009543A1
Автор: Katz Alexander, Okrut Alexander
Принадлежит:

In one example, a method for converting a first compound into a second compound is provided. The method includes providing the first compound in an entrance of a flow through reactor, wherein the entrance comprises a first catalyst and an oxidant, converting the first compound and the oxidant into the second compound as the first compound and the oxidant contact the first catalyst in the entrance of the flow through reactor while moving towards a tail end of the flow through reactor, and converting the first compound and the oxidant into the second compound via a solid catalyst comprising a white crystalline solid with a titanium content of about 0.5 to about 1.5 weight percent (wt %) in the tail end of the flow through reactor. 1. A method for converting a first compound into a second compound , comprising:providing the first compound in an entrance of a flow through reactor, wherein the entrance comprises a first catalyst and an oxidant;converting the first compound and the oxidant into the second compound as the first compound and the oxidant contact the first catalyst in the entrance of the flow through reactor while moving towards a tail end of the flow through reactor; andconverting the first compound and the oxidant into the second compound via a solid catalyst comprising a white crystalline solid with a titanium content of about 0.5 to about 1.5 weight percent (wt %) in the tail end of the flow through reactor.2. The method of claim 1 , wherein a temperature of the entrance of the flow through reactor is approximately 40 degrees Celsius.3. The method of claim 1 , wherein conversion of the oxidant in the tail end is greater than 80% at temperatures greater than 110 degrees Celsius.4. The method of claim 1 , wherein the first compound comprises an olefin and the second compound comprises epoxide.5. The method of claim 1 , wherein the oxidant comprises an organic hydroperoxide.6. The method of claim 1 , wherein the first catalyst comprises a solid catalyst or a ...

Подробнее
Номер записи: 40
08-01-2015 дата публикации

PROCESS FOR SYNTHESIS OF SYN AZIDO EPOXIDE AND ITS USE AS INTERMEDIATE FOR THE SYNTHESIS OF AMPRENAVIR & SAQUINAVIR

Номер: US20150011782A1
Автор: Gadakh Sunita Khanderao, Rekula Reddy Santhosh, Sudalai Arumugam
Принадлежит:

Disclosed herein is a novel route of synthesis of syn azide epoxide of formula 5, which is used as a common intermediate for asymmetric synthesis of HIV protease inhibitors such as Amprenavir, Fosamprenavir, Saquinavir and formal synthesis of Darunavir and Palinavir obtained by Cobalt-catalyzed hydrolytic kinetic resolution of racemic anti-(2SR,3SR)-3-azido-4-phenyl-1,2-epoxybutane (azido-epoxide). 2. The process according to claim 1 , wherein the allylic alcohol is aryl substituted or unsubstituted butene alcohol.3. The process according to claim 1 , wherein the Lewis acid is selected from the group consisting of BF3 claim 1 , anhyd. A1C13 claim 1 , PF5 claim 1 , TiC14 claim 1 , Ti(OiPr)4 claim 1 , zinc bromide and cerium(III) Chloride.4. The process according to claim 1 , wherein the source of azide anion is selected from inorganic azide such as sodium azide claim 1 , chlorine claim 1 , bromine claim 1 , and iodine azides or organic azide such as tosyl azide claim 1 , trimethylsilyl azide in suitable organic solvent.5. The process according to claim 1 , wherein the hydrolytic kinetic resolution is carried out in presence of (S claim 1 ,S)-Co(Salen)acetate complex in molar concentration in the range of 0.2-0.8 mol % in suitable organic solvent.6. An enantioselective synthesis of HIV protease inhibitors from syn azido epoxide of formula (+)-5 comprising converting said syn azido epoxide to said HIV protease inhibitors claim 1 , wherein said syn azido epoxide is prepared by a process comprising:i) subjecting allylic alcohol to epoxidation with m-chloroperbenzoic acid (mCPBA) to obtain racemic epoxy alcohol;ii) ring opening of epoxide with azide anion in presence of Lewis acid to produce the anti-azido alcohol, followed by selective tosylation of primary alcohol to afford tosylate;iii) treating tosylate with base to obtain racemic azido epoxide;iv) subjecting racemic azido epoxide to hydrolytic kinetic resolution to obtain corresponding 1,2-diol and syn azido epoxide ...

Подробнее
Номер записи: 41
10-01-2019 дата публикации

METHODS OF PRODUCING EPOXIDIZED FATTY ACID ALKYL ESTERS USEFUL AS PLASTICIZERS

Номер: US20190010526A1
Автор: Bonnet Cecile N., KAZEMIZADEH Mohammad R., Maixner David E.
Принадлежит:

Epoxidized fatty acid alkyl esters useful as plasticizers are obtained by reacting epoxidized fatty acid triglycerides with alcohol in the presence of an enzyme having transesterification activity. 1. A process of making epoxidized fatty acid alkyl esters , wherein the process comprises reacting one or more epoxidized fatty acid triglycerides with one or more monohydric alcohols in the presence of at least one enzyme having transesterification activity.2. The process of claim 1 , wherein the one or more monohydric alcohols is or are selected from the group consisting of C1-C10 alkanols.3. The process of claim 1 , wherein the one or more monohydric alcohols is or are selected from the group consisting of methanol claim 1 , ethanol claim 1 , propanol claim 1 , butanol claim 1 , octanol and combinations thereof.4. The process of any of wherein the at least one enzyme having transesterification activity includes at least one lipolytic enzyme.5. The process of wherein the at least one enzyme having transesterification activity includes at least one enzyme selected from the group consisting of lipases claim 1 , phospholipases and cutinases.6. The process of wherein the epoxidized fatty acid triglycerides have been obtained by epoxidation of one or more unsaturated fatty acid triglycerides selected from vegetable oils and fats and animal oils and fats.7. The process of wherein a reaction product is obtained which is comprised of epoxidized fatty acid alkyl esters and free fatty acids and the process comprises an additional step of converting at least a portion of the free fatty acids in the reaction product to fatty acid salts.8. The process of claim 7 , wherein the fatty acid salts are selected from the group consisting of alkaline earth and zinc salts of fatty acids.9. The process of wherein the additional step of converting at least a portion of the free fatty acids to fatty acid salts comprises contacting the reaction product with at least one of calcium oxide or zinc ...

Подробнее
Номер записи: 42
19-01-2017 дата публикации

METHOD FOR THE SYNTHESIS OF SUPPORTED GOLD (AU) NANOPARTICLES FOR EPOXIDATION REACTIONS

Номер: US20170014805A1
Автор: Al-Hazmi Mohammed H.
Принадлежит:

Processes for preparing supported gold nanoparticle catalysts are provided. In an exemplary embodiment, the process includes adding a solution of a phosphorus compound to a solution of chloro (dimethyl sulfide) gold (I) to obtain a solution of chloro (phosphorus compound) gold (I) complex, adding the solution of chloro (phosphorus compound) gold (I) complex to a solution of silver nitrate to obtain a solution of nitro (phosphorus compound) gold (I) complex, applying the solution of nitro (phosphorus compound) gold (I) complex to a metal hydroxide support, drying the metal hydroxide support; and calcining the dried metal hydroxide support to form the supported gold nanoparticle catalyst. Supported gold nanoparticle catalysts prepared by the process and processes for oxidizing ethylene to ethylene oxide in the presence of the supported gold nanoparticle catalysts are also provided. 1. A process for preparing a supported gold nanoparticle catalyst , the process comprising: [{'sub': 1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12, 'wherein the phosphorus compound is selected from the group consisting of a phosphine having a formula of PRRR, a phosphinite having a formula of P(OR)RR, a phosphonite having a formula of P(OR)(OR)R, a phosphite having a formula of P(OR)(OR)(OR), or a combination comprising at least one of the foregoing; and'}, {'sub': 1', '12, 'wherein Rto Rare each independently an alkyl, substituted alkyl, aryl, substituted aryl, aralkyl, substituted aralkyl, or a combination comprising at least one of the foregoing;'}], 'adding a solution of a phosphorus compound to a solution of chloro (dimethyl sulfide) gold (I) to obtain a solution of chloro (phosphorus compound) gold (I) complex,'}adding the solution of chloro (phosphorus compound) gold (I) complex to a solution of silver nitrate to obtain a solution of nitro (phosphorus compound) gold (I) complex;applying the solution of nitro (phosphorus compound) gold (I) complex to a metal hydroxide ...

Подробнее
Номер записи: 43
21-01-2016 дата публикации

Complexes useful as active components in supported epoxidation catalysts

Номер: US20160016157A1
Автор: Barbara Kimmich, Daniel F. White, Debra L. JACKSON, Ilya E. Nifant'ev, Pavel V. Ivchenko, Sandor Nagy
Принадлежит: Lyondell Chemical Technology LP

Method of preparing epoxidation catalysts are disclosed, including methods comprising reacting an inorganic siliceous solid with a metal complex of the formulas: wherein the variables are defined herein.

Подробнее
Номер записи: 44
21-01-2016 дата публикации

Catalyst Composition and Process for Preparing Olefin Oxides

Номер: US20160016158A1
Автор: Farha Omar K., Garibay Sergio J., Hupp Joseph T., Nguyen SonBinh T.
Принадлежит:

A catalyst composition comprising (a) a manganese-containing compound and (b) a carboxylic acid functionalized metal organic framework (MOF) compound; and a process for preparing an olefin oxide compound product including reacting (a) at least one olefin compound with (b) at least one oxidant in the presence of (c) the above catalyst composition. 1. A catalyst composition comprising (a) a manganese-containing compound; and (b) a carboxylic acid functionalized metal organic framework (MOF) compound.2. The catalyst composition of claim 1 , wherein the manganese-containing compound is a (TMTACN)Mn complex.3. The catalyst composition of claim 1 , wherein the carboxylic acid functionalized metal organic framework (MOF) compound is an acid ligand modified Zr(OH)(TBAPy).4. The catalyst composition of claim 1 , wherein the carboxylic acid functionalized metal organic framework (MOF) compound is an acid ligand modified ZrO(OH)(BTC)(HCOO).5. The catalyst composition of claim 1 , wherein the manganese-containing compound is a carboxylic acid-tethered Mn(TACN) MOF complex.6. The catalyst composition of claim 1 , wherein the manganese-containing compound is [Mn(TMTACN)(μ-O)](PF).HO.7. The catalyst composition of claim 4 , wherein the carboxylic acid functionalities are derived from one or more acid anhydrides.8. The catalyst composition of claim 7 , wherein the acid anhydride is a compound selected from the group consisting essentially of succinic anhydride; maleic anhydride claim 7 , and 2 claim 7 ,3-dichloromaleic anhydride; and mixtures thereof.9. The catalyst composition of claim 4 , wherein the carboxylic acid functionalities are derived from one or more carboxylic acids.10. The catalyst composition of claim 10 , wherein the carboxylic acid is a compound selected from the group consisting essentially of succinic acid; maleic acid claim 10 , and phosphonobenzoic acid; and mixtures thereof.11. A process for preparing an olefin oxide compound product comprising reacting:(A) an ...

Подробнее
Номер записи: 45
21-01-2016 дата публикации

METHOD FOR THE PRODUCTION OF ETHYLENE OXIDE

Номер: US20160016924A1
Автор: Frank Ernest R., McAdon Mark H., Zhang Liping
Принадлежит:

A method for the production of ethylene oxide wherein the partial pressure of water vapor at the inlet of the reactor is at least about 8 kPa using a high purity carrier comprising alpha-alumina, a promoting amount of at least one Group IA metal, and a promoting amount of rhenium.

Подробнее
Номер записи: 46
17-01-2019 дата публикации

METHOD FOR FABRICATING A TITANIUM-CONTAINING SILICON OXIDE MATERIAL WITH HIGH THERMAL STABILITY AND APPLICATIONS OF THE SAME

Номер: US20190015817A1
Автор: Hsu Yu-Chuan, TSAI Hsi-Chin
Принадлежит:

The present invention discloses a method for fabricating a titanium-containing silicon oxide material with high thermal stability and applications of the same, wherein a titanium source, a silicon source, an alkaline source, a template molecule and a peroxide are formulated into an aqueous solution; the aqueous solution reacts to generate a solid product; the solid product is separated from the aqueous solution with a solid-liquid separation process and dried; the solid product is calcined to obtain a titanium-containing silicon oxide material with high specific surface area. The titanium-containing silicon oxide material fabricated by the present invention has high thermal stability. Therefore, it still possesses superior catalytic activity after calcination. The titanium-containing silicon oxide material can be used to catalyze epoxidation of olefin and is very useful in epoxide production. 1. A method for fabricating a titanium-containing silicon oxide material with high thermal stability , comprising steps:mixing a titanium source, a silicon source, an alkaline source, a template molecule, a solvent and a peroxide to form an aqueous solution;after said aqueous solution have reacted, undertaking a solid-liquid separation process of said aqueous solution, and undertaking a drying process of a solid product separated from said aqueous solution; and {'br': None, 'i': x', 'x, 'sub': 2', '2, 'TiO(1−)SiO\u2003\u2003(I)'}, 'undertaking a calcination process of said solid product acquired in said solid-liquid separation process to obtain a titanium-containing silicon oxide material having Formula (I) in an anhydrous statewherein x ranges from 0.00001-0.5;wherein said titanium-containing silicon oxide material has an average pore size of 10 angstroms or more;wherein said titanium-containing silicon oxide material has a pore size of 90% or more of the total pore volume of 5 to 200 Å; and{'sup': '3', 'wherein said titanium-containing silicon oxide material has a specific ...

Подробнее
Номер записи: 47
18-01-2018 дата публикации

EPOXIDATION PROCESS

Номер: US20180016248A1
Автор: Padia Ashok S.
Принадлежит: Scientific Design Company, Inc.

A method for producing ethylene oxide comprising: a) providing one or more feed components, wherein the one or more feed components contains at least ethylene obtained by dehydrating ethanol; b) contacting the one or more feed components with an ethylene oxide catalyst bed disposed in a reactor tube, the ethylene oxide catalyst bed comprising: (1) an upstream ethylene oxide catalyst having a first cesium concentration and (2) a downstream ethylene oxide catalyst having a second cesium concentration, wherein the first cesium concentration is higher than the second cesium concentration. 1. A method for producing ethylene oxide comprising:a) providing one or more feed components, wherein the one or more feed components contain at least ethylene;b) contacting the one or more feed components with an ethylene oxide catalyst bed disposed in a reactor tube, the ethylene oxide catalyst bed comprising: (1) an upstream ethylene oxide catalyst having a first cesium concentration and (2) a downstream ethylene oxide catalyst having a second cesium concentration, wherein the first cesium concentration is higher than the second cesium concentration.2. The method of claim 1 , wherein the ethylene is obtained by dehydrating ethanol.3. The method of claim 1 , wherein the ethylene is obtained from petroleum sources.4. The method of claim 1 , wherein the ethylene oxide catalyst bed comprises from about 10 wt % to about 90 wt % of the upstream ethylene oxide catalyst and about 10 wt % to about 90 wt % of the downstream epoxidation catalyst.5. The method of claim 1 , wherein the first cesium concentration is from about 200 ppm to about 1000 ppm and the second cesium concentration is from about 100 ppm to about 700 ppm.6. The method according to claim 1 , wherein the one or more feed components further comprises oxygen and a ballast gas.7. A system for producing ethylene oxide comprising:(a) a source of ethylene;(b) an ethylene oxide reactor containing a plurality of reactor tubes; and(c) ...

Подробнее
Номер записи: 48
15-01-2015 дата публикации

METHOD FOR PRODUCING EPOXY COMPOUND AND CATALYST COMPOSITION FOR EPOXIDATION REACTION

Номер: US20150018515A1
Автор: Hosokawa Akemi, KUSAKA Haruhiko
Принадлежит: MITSUBISHI CHEMICAL CORPORATION

A method of producing an epoxy compound, which comprises reacting hydrogen peroxide with a compound having a carbon-carbon double bond, in the presence of at least one of a tungsten compound and a molybdenum compound; and an onium salt comprising 20 or more carbon atoms and one or more of substituents convertible to a functional group containing an active hydrogen or a salt thereof. 1. A method for producing an epoxy compound , comprising reacting hydrogen peroxide with a compound having a carbon-carbon double bond in the presence of at least one of a tungsten compound and a molybdenum compound; and an onium salt having 20 or more carbon atoms and containing one or more substituents convertible to an active hydrogen-containing functional group or a salt thereof.2. The method for producing an epoxy compound as claimed in claim 1 , wherein said active hydrogen-containing functional group is a hydroxyl group claim 1 , a carboxyl group claim 1 , an amino group claim 1 , a mercapto group claim 1 , a sulfonic acid group or a phosphoric acid group.3. The method for producing an epoxy compound as claimed in claim 1 , wherein at least one of phosphoric acids and phosphonic acids (excluding an onium salt) is further allowed to coexist in said reaction.4. The method for producing an epoxy compound as claimed in claim 1 , wherein said reaction is a two-phase reaction of an aqueous phase and an organic phase and the pH of said aqueous phase is from 2 to 6.5. The method for producing an epoxy compound as claimed in claim 1 , wherein said onium salt is an ammonium salt claim 1 , a pyridinium salt claim 1 , an imidazolinium salt or a phosphonium salt.6. The method for producing an epoxy compound as claimed in claim 1 , wherein said substituent convertible to an active hydrogen-containing functional group or a salt thereof is an alkoxycarbonyl group or an acyloxy group.8. The method for producing an epoxy compound as claimed in claim 1 , wherein in said production method claim 1 , ...

Подробнее
Номер записи: 49
26-01-2017 дата публикации

POST TREATED SILVER CATALYSTS FOR EPOXIDATION

Номер: US20170021337A1
Автор: Kimmich Barbara, NAGY Sandor
Принадлежит: Lyondell Chemical Technolgy, L.P.

The present disclosure generally relates to a silver-based epoxidation catalyst. In certain embodiments, a method is provided for modulating the reactivity of the silver-based epoxidation catalyst, comprising the catalyst being post-treated with at least two different salt solutions. In some embodiments, the treatment results in the deposition of one or more metals onto the surface of the catalyst. In further embodiments, method is also provided of using the silver catalyst to generate an epoxide from an olefin. 1. A catalyst comprising:A) from about 10 wt % to about 70 wt % of silver;B) from about 0.0 wt % to about 5.0 wt % of a promoter selected from the group consisting of rhenium, tungsten, zinc, nickel, gold, copper, scandium, ytterbium, sodium, potassium, lithium, rubidium, cesium, and molybdenum;C) from about 30 wt % to about 90 wt % of a solid component selected from the group consisting of calcium titanate, magnesium titanate, barium titanate, strontium titanate, calcium carbonate, magnesium carbonate, barium carbonate, and strontium carbonate; andD) from about 0.1 wt % to about 6.5 wt % of a salt mixture comprising a first salt and a second salt, wherein the first salt is a Group 1 salt and the second salt is selected from gallium, silver, gold, calcium, barium, strontium, and magnesium salt, and wherein the salt mixture coats the silver, the sold support, or the promoter.2. The catalyst of claim 1 , wherein the promoter is selected from molybdenum claim 1 , zinc claim 1 , and rhenium.3. The catalyst of claim 1 , wherein the solid component is calcium carbonate.4. The catalyst of claim 1 , wherein the first salt comprises from about 0.25 wt % to about 2.5 wt % of the catalyst.5. The catalyst of claim 1 , wherein the second salt comprises from about 0.1 wt % to about 2.0 wt % of the catalyst.6. The catalyst of claim 1 , wherein the silver comprises from about 30 wt % to about 60 wt % of the catalyst.7. The catalyst of claim 1 , wherein the solid component ...

Подробнее
Номер записи: 50
25-01-2018 дата публикации

POROUS BODIES WITH ENHANCED PORE ARCHITECTURE

Номер: US20180021755A1
Автор: Suchanek Wojciech L.
Принадлежит: Scientific Design Company, Inc.

A porous body is provided with enhanced fluid transport properties that is capable of performing or facilitating separations, or performing reactions and/or providing areas for such separations or reactions to take place. The porous body includes at least 80 percent alpha alumina and has a pore volume from 0.3 mL/g to 1.2 mL/g and a surface area from 0.3 m/g to 3.0 m/g. The porous body further includes a pore architecture that provides at least one of a tortuosity of 7.0 or less, a constriction of 4.0 or less and a permeability of 30 mdarcys or greater. The porous body can be used in a wide variety of applications such as, for example, as a filter, as a membrane or as a catalyst carrier. 1. A precursor mixture for producing a porous body , the precursor mixture comprising:(i) at least one milled alpha alumina powder having a particle size of 0.1 microns to 6 microns,(ii) a non-silicate binder, and(iii) at least one principle burnout material having a particle size of 1 micron to 10 microns.2. The precursor mixture of claim 1 , wherein the least one milled alpha alumina powder claim 1 , the non-silicate binder claim 1 , and the at least one principle burnout material are in a homogeneous mixture.3. The precursor mixture of claim 1 , wherein the at least one principle burnout material is a granulated polyolefin.4. The precursor mixture of claim 3 , wherein the granulated polyolefin is one of polyethylene and polypropylene.5. The precursor mixture of claim 1 , further comprising unmilled alpha alumina powder.6. The precursor mixture of claim 5 , wherein the unmilled alpha alumina powder has an average particle size from 10 microns to 100 microns.7. The precursor mixture of claim 5 , wherein a weight ratio of the milled alpha alumina powder to the unmilled alpha alumina powder is from about 0.25:1 to 5:1.8. The precursor mixture of claim 5 , further comprising an additional unmilled alpha alumina powder having a particle size greater the particle size of the unmilled ...

Подробнее
Номер записи: 51
25-01-2018 дата публикации

METHOD FOR FABRICATING TITANIUM-CONTAINING SILICON OXIDE MATERIAL AND APPLICATION OF THE SAME

Номер: US20180022720A1
Автор: Hsu Yu-Chuan, TSAI Hsi-Chin, Tseng Chia-Yao, Wu Po-Sung
Принадлежит:

A method for fabricating a titanium-containing silicon oxide material and an application of the same are disclosed. The method needn't use a template but directly use an amorphous silicon dioxide and a titanium source as the reactants. The reactants are mixed with a solvent and react in the solvent. The suspension generated by the reaction is processed by solid-liquid separation, flushing and drying to obtain a titanium-containing silicon oxide material. The method features a simplified fabrication process and a low fabrication cost. The titanium-containing silicon oxide material fabricated by the method has a superior catalytic activity, able to catalyze an epoxidation reaction of an olefin-group compound to generate an epoxide. 1. A method for fabricating a titanium-containing silicon oxide material , comprising steps:preparing a mixture liquid containing an amorphous silicon dioxide, a titanium source and a solvent;enabling a reaction of said mixture liquid, and undertaking a solid-liquid separation process; and {'br': None, 'i': x', '−x, 'sub': 2', '2, 'TiO(1)SiO\u2003\u2003(I)'}, 'drying a solid-state material obtained in said solid-liquid separation process to obtain a titanium-containing silicon oxide material, wherein in an anhydrous state, said titanium-containing silicon oxide material is expressed by Formula (I)wherein x is a number within 0.002-0.2.2. The method according to claim 1 , wherein said amorphous silicon dioxide is smoked silica claim 1 , fumed silica claim 1 , silica gel claim 1 , or silica sol; said titanium source is a titanate or an inorganic titanium source; said solvent is an alcohol-group compound.3. The method according to claim 2 , wherein said titanate is selected from a group consisting of tetramethyl titanate claim 2 , tetraethyl titanate claim 2 , tetrapropyl orthotitanate claim 2 , tetra isopropyl titanate claim 2 , tetrabutyl orthotitanate claim 2 , tetra sec-butyl titanate claim 2 , tetrabutyl isotitanate claim 2 , tetra tert- ...

Подробнее
Номер записи: 52
24-01-2019 дата публикации

Post impregnation heat treatment for silver-based epoxidation catalysts

Номер: US20190022628A1
Автор: Andrew Mcfarland, Serguei Pak
Принадлежит: Scientific Design Co Inc

The present disclosure is directed to the preparation of silver-based HSCs. During preparation of the catalyst a selected carrier is co-impregnated with a solution containing a catalytically effective amount of silver and a promoting amount of rhenium and other promoters. After co-impregnation, the carrier is subjected to a separate heat treatment prior to calcination. Such heat treatment is conducted for between about 1 minute and about 120 minutes at temperatures between about 40° C. and about 300° C. Catalysts prepared by the present methodology evidence improved selectivity, activity and/or stability resulting in an increase in the useful life of the catalyst.

Подробнее
Номер записи: 53
24-01-2019 дата публикации

METHODS FOR DIRECT EPOXIDATION OF PROPYLENE WITH OXYGEN

Номер: US20190023672A1
Автор: Nijhuis Tjeerd Alexander, Odeh Ihab N.
Принадлежит:

Methods to produce propylene oxide are described. One method can include providing a propene feedstream, an oxygen feed stream and, optionally, a hydrogen feed stream to a reaction zone, and maintaining, in a reaction zone during the reaction, at least 50 vol. % propene and 1 to 15 vol. % Oby gradually introducing a feed stream that includes the Oover the length of the catalytic bed or the length of the reaction zone and/or a feed stream that includes the Hover the length of the catalytic bed or the length of the reaction zone. 1. A method for direct epoxidation of propene , the method comprising reacting , in a reaction zone of a reactor , propene , oxygen gas (O) , and hydrogen gas (H) in the presence of a catalytic bed that includes a propene epoxidation catalyst to produce a product stream comprising propylene oxide , wherein:{'sub': 2', '2', '2', '2, 'at least 50 vol. % propene, 1 to 15 vol. % O, and 1 to 15 vol. % His maintained in the reaction zone during the reaction by (i) introducing the propene through a first reactant feed stream and (ii) gradually introducing the Oor the H, or both, over the length of the catalytic bed or the length of the reaction zone through a separate reactant feed stream(s), and'}a temperature of 150° C. to 300° C. and a pressure of 3 bar to 20 bar is maintained in the reaction zone during the reaction.2. The method of claim 1 , wherein 82 vol. % to 95 vol. % of propene claim 1 , 3 vol. % to 8 vol. % O claim 1 , and 2 vol. % to 10 vol. % His maintained in the reaction zone during the reaction.3. The method of claim 2 , wherein 88 vol. % to 92 vol. % of propene claim 2 , 4 vol. % to 6 vol. % O claim 2 , and 4 vol. % to 6 vol. % His maintained in the reaction zone during the reaction.4. The method of claim 1 , wherein the vol. % of propene and Oor H claim 1 , or both claim 1 , in the reaction zone has an explosive regime claim 1 , and wherein the gradual introduction of Oor H claim 1 , or both claim 1 , in the reaction zone is such ...

Подробнее
Номер записи: 54
24-01-2019 дата публикации

PROCESS FOR THE EPOXIDATION OF AN OLEFIN

Номер: US20190023673A1
Автор: DAUTH Nico, PASCALY Matthias, Schmidt Franz
Принадлежит:

In a process for the epoxidation of an olefin with hydrogen peroxide in the presence of a solvent, where a mixture comprising olefin, an aqueous hydrogen peroxide solution and a solvent is continuously passed through a fixed bed of an epoxidation catalyst comprising a titanium zeolite, addition of a chelating agent to the aqueous hydrogen peroxide solution before mixing it with solvent reduces or prevents formation of deposits on the catalyst and blocking of orifices of a liquid distributor. 114-. (canceled)15. A process for the epoxidation of an olefin with hydrogen peroxide in the presence of a solvent , wherein the solvent is selected from the group consisting of methanol , ethanol , tert-butanol , ethylene glycol , 1 ,2-propanediol , 1 ,3-propanediol , tetrahydrofuran , dioxane , ethylene glycol monomethyl ether , ethylene glycol monoethyl ether , ethylene glycol monobutyl ether , propylene glycol monomethyl ethers , acetone , 2-butanone , acetonitrile and proprionitrile , hydrogen peroxide is used as an aqueous hydrogen peroxide solution , a chelating agent is added to the aqueous hydrogen peroxide solution before it is mixed with solvent , and a mixture comprising olefin , solvent , and hydrogen peroxide with added chelating agent is continuously passed through a fixed bed of an epoxidation catalyst comprising a titanium zeolite.16. The process of claim 15 , wherein the aqueous hydrogen peroxide solution comprises phosphoric acid or an alkali metal or ammonium salt of phosphoric acid.17. The process of claim 15 , wherein the aqueous hydrogen peroxide solution is mixed with at least 50% of the solvent used for reacting the olefin with hydrogen peroxide.18. The process of claim 15 , wherein the chelating agent is a polyphosphonic acid or an alkali metal or ammonium salt thereof.19. The process of claim 15 , wherein the chelating agent is added in an amount of from 10to 10mol chelating agent per mol of hydrogen peroxide.20. The process of claim 15 , wherein the ...

Подробнее
Номер записи: 55
01-02-2018 дата публикации

METHODS TO PRODUCE MOLECULAR SIEVES WITH LTA TOPOLOGY AND COMPOSITIONS DERIVED THEREFROM

Номер: US20180029021A1
Автор: BOAL BEN W., Davis Mark E., SCHMIDT JOEL E.
Принадлежит:

The present disclosure is directed to processing for preparing crystalline pure-silica and heteroatom-substituted LTA frameworks in fluoride media using a simple organic structure-directing agent (OSDA), having a structure of Formula (I): 1. A crystalline microporous silicate of LTA topology that is substantially free of an Organic Structure Directing Agent (OSDA).2. The crystalline microporous silicate of claim 1 , that is an aluminosilicate having a molar ratio of Si:Al in a range of from about 5 to about 50.3. The crystalline microporous aluminosilicate of claim 2 , having a molar ratio of Si:Al in a range of from about 12 to about 42.4. The crystalline microporous aluminosilicate of claim 2 , comprising pores containing Li claim 2 , Na claim 2 , K claim 2 , Rb claim 2 , Cs claim 2 , Be claim 2 , Mg claim 2 , Ca claim 2 , Sr claim 2 , Be claim 2 , Al claim 2 , Ga claim 2 , In claim 2 , Zn claim 2 , Ag claim 2 , Cd claim 2 , Ru claim 2 , Rh claim 2 , Pd claim 2 , Pt claim 2 , Au claim 2 , Hg claim 2 , La claim 2 , Ce claim 2 , Pr claim 2 , Nd claim 2 , Pm claim 2 , Sm claim 2 , Eu claim 2 , or RNHcations claim 2 , where R is alkyl claim 2 , and n=0-4.5. The crystalline microporous aluminosilicate of claim 2 , comprising pores containing NaCl or KCl.6. The crystalline microporous aluminosilicate of claim 2 , comprising pores containing scandium claim 2 , yttrium claim 2 , titanium claim 2 , zirconium claim 2 , vanadium claim 2 , manganese claim 2 , chromium claim 2 , molybdenum claim 2 , tungsten claim 2 , iron claim 2 , ruthenium claim 2 , osmium claim 2 , cobalt claim 2 , rhodium claim 2 , iridium claim 2 , nickel claim 2 , palladium claim 2 , platinum claim 2 , copper claim 2 , silver claim 2 , gold claim 2 , or a mixture thereof claim 2 , each as a metal claim 2 , oxide claim 2 , or salt.7. The crystalline microporous aluminosilicate of claim 2 , comprising pores containing copper as a metal claim 2 , oxide claim 2 , or salt.8. The crystalline microporous ...

Подробнее
Номер записи: 56
04-02-2016 дата публикации

PROCESS FOR PREPARING CYCLODODECANONE

Номер: US20160031783A1
Автор: CAMERETTI Luca, DOERING Jens, Haeger Harald, HERWIG Juergen, Meier Ralf, MICOINE Kevin, Roos Martin
Принадлежит: EVONIK DEGUSSA GmbH

Cyclododecanone (CDON) is prepared by epoxidizing cyclododecene (CDEN) to epoxycyclododecane (CDAN epoxide), and rearranging the CDAN epoxide to CDON to obtain a mixture comprising said CDON and cyclododecane (CDAN), wherein CDAN is separated from the CDON-containing mixture and oxidized to CDON. 1. A process for preparing cyclododecanone (CDON) by a reaction route I , said reaction route I comprising:a. epoxidizing cyclododecene (CDEN) to epoxycyclododecane (CDAN epoxide), and 'wherein CDAN is separated from the CDON-containing mixture and oxidized to CDON.', 'b. rearranging the CDAN epoxide to CDON to obtain a mixture comprising said CDON and cyclododecane (CDAN),'}2. The process according to claim 1 , wherein the rearrangement in step b is effected in the presence of a noble metal catalyst.3. The process according to claim 2 , wherein the catalyst for the rearrangement comprises titanium dioxide claim 2 , zirconium dioxide or both.4. The process according to claim 1 , wherein the CDAN epoxide from step a comprises CDAN which is at least partly removed prior to the rearrangement in step b.5. The process according to claim 4 , wherein the CDAN removed prior to the rearrangement is oxidized to CDON.6. The process according to claim 1 , wherein the CDON-containing mixture comprises cyclododecanol (CDOL) which is dehydrogenated to CDON.7. The process according to claim 6 , wherein the CDOL is separated from the CDON-containing mixture prior to the dehydrogenation and is sent to a reaction route II for preparation of CDON claim 6 , said reaction route II comprisinga. hydrogenation of cyclododecatriene (CDT) to CDAN,b. oxidation of CDAN to give a mixture comprising CDOL and CDON andc. dehydrogenation of CDOL to CDON.8. The process according to claim 1 , wherein the CDAN removed prior to performance of the oxidation claim 1 , is sent to a reaction route II for preparation of CDON claim 1 , comprisinga. hydrogenation of CDT to CDAN,b. oxidation of CDAN to give a mixture ...

Подробнее
Номер записи: 57
04-02-2016 дата публикации

Process for preparing cyclododecanone

Номер: US20160031784A1
Автор: Harald Haeger, Jens Doering, Juergen Herwig, Kévin Micoine, Luca Cameretti, Martin Roos, Ralf Meier
Принадлежит: EVONIK DEGUSSA GmbH

Cyclododecanone (CDON) is prepared by epoxidizing cyclododecene (CDEN) to epoxycyclododecane (CDAN epoxide), and rearranging the CDAN epoxide to CDON to obtain a mixture comprising said CDON and CDEN, wherein CDEN is separated from the CDON-containing mixture and sent to the epoxidation to CDAN epoxide in step a.

Подробнее
Номер записи: 58
01-02-2018 дата публикации

METHOD FOR THE EPOXIDATION OF AN OLEFIN WITH HYDROGEN PEROXIDE

Номер: US20180030010A1
Автор: BREITENBACH Uwe, Imm Sebastian, PASCALY Matthias, RAUSCH Hans-Martin, Stock Jürgen
Принадлежит: EVONIK DEGUSSA GmbH

Epoxidation of an olefin is carried out by continuously reacting the olefin with hydrogen peroxide in the presence of a homogeneous epoxidation catalyst in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase, using a loop reactor with mixing of the liquid phases. The loop reactor comprises a measuring section in which the liquid phases are temporarily separated, at least one pH electrode is arranged in the measuring section in contact with the separated aqueous phase, a pH of the separated aqueous phase is determined with the pH electrode and the pH is maintained in a predetermined range by adding acid or base to the loop reactor. 111-. (canceled)12. A method for the epoxidation of an olefin , comprising continuously reacting the olefin with hydrogen peroxide in the presence of a homogeneous epoxidation catalyst , wherein: i) a measuring section in which the liquid phases are temporarily separated into a separated aqueous phase and a separated organic phase;', 'ii) at least one pH electrode in said measuring section in contact with the separated aqueous phase;, 'a) the reaction is carried out in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase using a loop reactor with mixing of the liquid phases, wherein the loop reactor comprisesb) a pH of the separated aqueous phase is determined with said pH electrode and said pH is maintained in a predetermined range by adding acid or base to the loop reactor.13. The method of claim 12 , wherein the liquid phases are temporarily separated by lowering the flow rate.14. The method of claim 13 , wherein the flow rate is lowered in the measuring section by enlarging the flow cross section.15. The method of claim 12 , wherein the measuring section is located in a side stream to the loop reactor.16. The method of claim 15 , wherein a valve is used for lowering the flow rate or temporarily stopping the flow in the measuring section.17. The method of claim 12 , wherein at ...

Подробнее
Номер записи: 59
01-02-2018 дата публикации

METHOD FOR THE EPOXIDATION OF AN OLEFIN WITH HYDROGEN PEROXIDE

Номер: US20180030011A1
Автор: BREITENBACH Uwe, Imm Sebastian, MESS Brigitte, NEUROTH Jürgen, PASCALY Matthias, Stock Juergen
Принадлежит: EVONIK DEGUSSA GmbH

Epoxidation of an olefin is carried out by continuously reacting the olefin with hydrogen peroxide in the presence of a water soluble epoxidation catalyst, comprising a manganese complex, in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase using a loop reactor with mixing of the liquid phases, and during the reaction the concentration of hydrogen peroxide in the aqueous liquid phase is maintained at less than 1.0% by weight. 115-. (canceled)16. A method for the epoxidation of an olefin , comprising continuously reacting the olefin with hydrogen peroxide in the presence of a water soluble epoxidation catalyst , comprising a manganese complex , wherein:a) the reaction is carried out in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase using a loop reactor with mixing of the liquid phases;b) during the reaction, the concentration of hydrogen peroxide in the aqueous liquid phase is maintained at less than 1.0% by weight.17. The method of claim 16 , wherein:a) the loop reactor comprises a measuring section within the loop, in which the liquid phases are temporarily separated into a separated aqueous phase and a separated organic phase;b) a measuring device is arranged in the measuring section in contact with the separated aqueous phase; andc) the concentration of hydrogen peroxide in the separated aqueous phase is determined with said measuring device.18. The method of claim 17 , wherein the liquid phases are temporarily separated by lowering the flow rate.19. The method of claim 18 , wherein the flow rate is lowered in the measuring section by enlarging the flow cross section.20. The method of claim 17 , wherein the measuring section is located in a side stream to the loop reactor.21. The method of claim 20 , wherein a valve is used for lowering the flow rate or temporarily stopping the flow in the measuring section.22. The method of claim 17 , wherein the concentration of hydrogen peroxide is measured by ...

Подробнее
Номер записи: 60
01-02-2018 дата публикации

METHOD FOR THE EPOXIDATION OF AN OLEFIN WITH HYDROGEN PEROXIDE

Номер: US20180030012A1
Автор: ANDRÉ Joao, Imm Sebastian, PASCALY Matthias, Stock Jürgen
Принадлежит: EVONIK DEGUSSA GmbH

In the method for the epoxidation of an olefin, the olefin is continuously reacted with hydrogen peroxide in a mixed reactor in the presence of a water soluble epoxidation catalyst, comprising a manganese complex, the reaction is carried out in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase with mixing of the liquid phases, reaction mixture is continuously withdrawn from the mixed reactor and separated into a separated aqueous phase and a separated organic phase, and part of the separated aqueous phase is continuously recycled into the mixed reactor, with the combined hold-up time of aqueous phase in withdrawing, separating phases and recycling aqueous phase being kept at less than 15 minutes. 113-. (canceled)14. A method for the epoxidation of an olefin , comprising:a) continuously reacting the olefin with hydrogen peroxide in a mixed reactor in the presence of a water soluble epoxidation catalyst comprising a manganese complex, wherein the reaction is carried out in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase with mixing of the liquid phases;b) continuously withdrawing reaction mixture from the mixed reactor and separating the withdrawn reaction mixture into a separated aqueous phase and a separated organic phase; andc) continuously recycling part of the separated aqueous phase into the mixed reactor;wherein the combined hold-up time of aqueous phase in steps b) and c), defined as the ratio of the total volume occupied by aqueous phase in steps b) and c) to the volumetric flow rate of recycled separated aqueous phase, is less than 15 minutes.15. The method of claim 14 , wherein in step b) the withdrawn reaction mixture is separated with a centrifuge.16. The method of claim 15 , wherein the centrifuge provides an acceleration of at least 50 000 ms.17. The method of claim 15 , wherein the centrifuge is a conical plate centrifuge.18. The method of claim 14 , wherein step c) comprises ...

Подробнее
Номер записи: 61
08-02-2018 дата публикации

Process for the regeneration of a titanium zeolite catalyst for propylene epoxidation

Номер: US20180036723A1
Автор: Alexander Schroeder, Andrei-Nicolae Parvulescu, Daniel Urbanczyk, Dominic RIEDEL, Joaquim Henrique Teles, Luise Spiske, Meinolf Weidenbach, Ulrich Mueller, Ulrike Wegerle, Werner J. Witzl
Принадлежит: BASF SE, Dow Global Technologies LLC

The invention relates to process for the regeneration of a catalyst comprising a titanium containing zeolite as catalytically active material comprising a stage comprising introducing a feed stream comprising propene, hydrogen peroxide or a hydrogen peroxide source, and an organic solvent into a reactor containing a catalyst comprising the titanium containing zeolite, subjecting the feed stream in the reactor to epoxidation conditions in the presence of the catalyst, removing a product steam comprising propylene oxide and the organic solvent from the reactor, stopping introducing the feed stream, washing the catalyst with a liquid aqueous system and calcining the washed catalyst.

Подробнее
Номер записи: 62
08-02-2018 дата публикации

Method for Synthesizing Bio-Plasticizers using Acidic Ionic Liquids as Catalysts

Номер: US20180037561A1
Автор: Li Chiu-Ping, Lin Ya-Shiuan, Tsai Ming-Tsang, Tu You-Liang, Wu Jung-Chung
Принадлежит:

Synthesizing bio-plasticizers with acidic ionic liquids as catalysts. The acidic ionic liquids are Bronsted acidic ionic liquids, which are composed of alkyl sulfone pyridinium and strong Bronsted acid. Epoxidized fatty acid alkyl esters could be obtained via epoxidation of fatty acid alkyl esters using the acidic ionic liquids as catalysts. The epoxidized fatty acid alkyl esters perform well as bio-plasticizers, which could be substituted for phthalate ester plasticizers. The acidic ionic liquids catalysts provide good catalytic performance, are easy to separate, reusable, and may reduce corrosion of pipelines. 1. A method for synthesizing bio-plasticizers using acidic ionic liquids as catalysts , comprising the following steps:synthesizing Bronsted acidic ionic liquids with a strong Bronsted acid and an alkyl sulfonic acid, which replaces amphoteric compounds of pyridinium, wherein a molar ratio of the alkyl sulfonic acid to the strong Bronsted acid is between 1.0 and 1.5;heating fatty acid alkyl esters, organic acids and Bronsted acidic ionic liquids, all of which have been mixed pro rata, to 50° C. and further mixing in hydrogen peroxide solutions instilled within 1 hour, for development of reaction solutions, then further heating the resulting mixture to a temperature of 50-100° C. for epoxidation and maintaining the epoxidation temperature for 0.5-5 hours, wherein a molar ratio of fatty acid alkyl esters to organic acids to hydrogen peroxide is 1:0.2-1:0.2-5, and a weight of Bronsted acidic ionic liquids is 1-15% of the total weight of organic acids and hydrogen peroxide solutions; andseparating oil-phase solutions of the reaction solutions from aqueous-phase solutions and rinsing the oil-phase solutions with lye and deionized water for preparation of epoxidized fatty acid esters after removal of water.2. The method for synthesizing bio-plasticizers using acidic ionic liquids as catalysts as claimed in claim 1 , wherein the alkyl in the alkyl sulfonic acid ...

Подробнее
Номер записи: 63
24-02-2022 дата публикации

NEBIVOLOL SYNTHESIS METHOD AND INTERMEDIATE COMPOUND THEREOF

Номер: US20220056003A1
Автор: Zheng Zhiguo
Принадлежит:

The present invention relates to a nebivolol synthesis method and intermediate compound thereof. Specifically, the present invention relates to a method for synthesizing nebivolol, intermediate compound thereof, and a method for preparing the intermediate compound. 2. The process according to for preparation of the compound of formula VIII (R*/R*).3. (canceled)4. (canceled)5. (canceled)714-. (canceled)1641-. (canceled)43. A The compound of formula IV1′ according to .44. The compound of formula IV2′ according to .45. The compound of formula V′ (2R* claim 42 ,3R*) according to .46. The compound of formula VI′ (2R* claim 42 ,3S*) according to .47. The compound of formula XI′ according to .48. The compound of formula XII′ according to .49. The compound of formula XVI′ according to .50. A compound according to claim 42 , wherein the compound is selected from the group consisting of:1-benzyloxy-2-bromomethyl-4-fluorobenzene,4-[(2-benzyloxy-5-fluorophenyl)-butyn-1-yl]trimethylsilane,1-(benzyloxy)-2-(butyn-3-yl)-4-fluorobenzene,5-[2-(benzyloxy)-5-fluorophenyl]pent-2-yne-1-ol,trans-5-[2-(benzyloxy)-5-fluorophenyl]pent-2-ene-1-ol,(2R*,3R*)-3-[2-(benzyloxy)-5-fluorophenethyl]-2-hydroxymethyl-oxacyclopropane,1-[6-fluoro-(2S*)-3,4-dihydro-2H-benzopyran-2-yl]-(1R*)-1,2-ethylene glycol,cis-5-[2-(benzyloxy)-5-fluorophenyl]pent-2-ene-1-ol,(2R*,3S*)-3-[2-(benzyloxy)-5-fluorophenethyl]-2-hydroxymethyl-oxacyclopropane,1-[6-fluoro-(2R*)-3,4-dihydro-2H-benzopyran-2-yl]-(1R*)-1,2-ethylene glycol,(S*,R*)-(+/−)-α-[(p-tolylsulfonyloxy)methyl]-(6-fluoro-2-chromanyl)-methanol,(R*,R*)-(+/−)-α-[(p-tolylsulfonyloxy)methyl]-(6-fluoro-2-chromanyl)-methanol,(S*,R*)-(+/−)-α-[(benzylamino)methyl]-(6-fluoro-2-chromanyl)-methanol,(R*,R*)-(+/−)-α-[(benzylamino)methyl]-(6-fluoro-2-chromanyl)-methanol,(2R,3R)-3-[2-(benzyloxy)-5-fluorophenethyl]-2-hydroxymethyl-oxacyclopropane,(2S,3S)-3-[2-(benzyloxy)-5-fluorophenethyl]-2-hydroxymethyl-oxacyclopropane,(2R,3S)-3-[2-(benzyloxy)-5-fluorophenethyl]-2- ...

Подробнее
Номер записи: 64
07-02-2019 дата публикации

CONVERSION OF MIXED METHANE/ETHANE STREAMS

Номер: US20190039972A1
Автор: BOS Alouisius Nicolaas Renée, SCHOONEBEEK Ronald Jan, VAN ROSSUM Guus, VERHAAK Michael Johannes Franciscus Maria
Принадлежит:

The invention relates to a process for conversion of a stream comprising methane and ethane, comprising converting ethane from a stream comprising methane and ethane, in which stream the volume ratio of methane to ethane is of from 0.005:1 to 100:1, to a product having a vapor pressure at 0° C. lower than 1 atmosphere, resulting in a stream comprising methane and the product having a vapor pressure at 0° C. lower than 1 atmosphere; separating the product having a vapor pressure at 0° C. lower than 1 atmosphere from the stream comprising methane and the product having a vapor pressure at 0° C. lower than 1 atmosphere, resulting in a stream comprising methane; and chemically converting methane from the stream comprising methane, or feeding methane from the stream comprising methane to a network that provides methane as energy source, or liquefying methane from the stream comprising methane. 1. A process for conversion of a stream comprising methane and ethane , comprisingconverting ethane from a stream comprising methane and ethane, in which stream the volume ratio of methane to ethane is of from 0.005:1 to 100:1, preferably of from 0.2:1 to 100:1, more preferably of from 0.5:1 to 100:1, to a product having a vapor pressure at 0° C. lower than 1 atmosphere, resulting in a stream comprising methane and the product having a vapor pressure at 0° C. lower than 1 atmosphere;separating the product having a vapor pressure at 0° C. lower than 1 atmosphere from the stream comprising methane and the product having a vapor pressure at 0° C. lower than 1 atmosphere, resulting in a stream comprising methane; andchemically converting methane from the stream comprising methane or feeding methane from the stream comprising methane to a network that provides methane as energy source, or liquefying methane from the stream comprising methane.2. The process according to claim 1 , wherein when converting ethane to the product having a vapor pressure at 0° C. lower than 1 atmosphere claim ...

Подробнее
Номер записи: 65
18-02-2021 дата публикации

CATALYST EFFECTIVE IN THE OXIDATIVE CONVERSION OF ETHYLENE TO ETHYLENE OXIDE

Номер: US20210046459A1
Автор: Bartosch Christian, KARPOV Andrey, Kraemer Michael, KRENNRICH Gerhard, LANGE DE OLIVEIRA Armin, WALSDORFF Christian, ZUEHLKE Juergen
Принадлежит:

The present invention provides a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, comprising an alumina support and 20 to 45%by weight of the catalyst, of silver applied to the support, the catalyst meeting the following limitations (i) to (v): (i) an amount of cesium c(Cs) in mmol per Kg of catalyst of at least 2; (ii) an amount of rhenium c(Re) in mmol per Kg of catalyst of at least 3.0; (iii) an amount of tungsten c(W) in mmol per Kg of catalyst of at least 1.6; (iv) a silicon to alkaline earth metal molar ratio x of not higher than 1.80; (v) c(Cs)−c(Re)−c(W)≤4·x−0.5. 1. A catalyst effective in the oxidative conversion of ethylene to ethylene oxide , comprising an alumina support and 20 to 45% by weight of the catalyst , of silver applied to the support , the catalyst meeting the following limitations (i) to (v):(i) an amount of cesium c(Cs) in mmol per Kg of catalyst of at least 2;(ii) an amount of rhenium c(Re) in mmol per Kg of catalyst of at least 3.0;(iii) an amount of tungsten c(W) in mmol per Kg of catalyst of at least 1.6;(iv) a silicon to alkaline earth metal molar ratio x of not higher than 1.80;(v) c(Cs)−c(Re)−c(W)≤4·x−0.5.2. The catalyst according to claim 1 , wherein{'br': None, 'i': c', 'c', 'c', 'x−, '(Cs)−(Re)−(W)≤4·1.3.'}3. The catalyst according to claim 2 , wherein{'br': None, 'i': c', 'c', 'c', 'x−, '(Cs)−(Re)−(W)≤2.35·1.3.'}4. The catalyst according to claim 1 , wherein x is 0.1 to 1.46 claim 1 , preferably 0.1 to 1.10.5. The catalyst according to claim 1 , whereinc(Cs) is 4.5 to 11.3; and/orc(Re) is 3.0 to 9; and/orc(W) is 1.6 to 5.5.6. The catalyst according to claim 1 , comprising an amount of potassium c(K) in mmol per Kg of catalyst of 2.6 to 10.3.7. The catalyst according to claim 1 , comprising an amount of sodium c(Na) in mmol per Kg of catalyst of 0.2 to 10.8.8. The catalyst according to claim 1 , comprising an amount of lithium c(Li) in mmol per Kg of catalyst of 43 to 86.9. The catalyst according to ...

Подробнее
Номер записи: 66
15-02-2018 дата публикации

Glycol ether process

Номер: US20180044272A1
Автор: Saurabh KATIYAR
Принадлежит: Scientific Design Co Inc

A process for the preparation of glycol ethers by providing a diethylene glycol ether column bottoms mixture comprising triethylene glycol ether, tetraethylene glycol ether, and glycol ether catalyst; separating, in a stripping column, the column bottom mixture into a triethylene glycol ether vapor overhead and a liquid bottoms; and separating, in an evaporator, the liquid bottoms into a residue containing about 80% to about 90% tetraethylene glycol ether and an evaporator overhead comprising at least about 60% tetraethylene glycol ether.

Подробнее
Номер записи: 67
15-02-2018 дата публикации

Epoxidation process

Номер: US20180044309A1
Автор: John Sullivan, Mansoor Husain, Shaun Mcgovern
Принадлежит: Scientific Design Co Inc

A method for the oxidation of ethylene to form ethylene oxide which comprises: providing an aqueous stream containing ethylene glycol and impurities; introducing the aqueous stream in a first ion exchange treatment bed to reduce the content of these impurities; determining whether an outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm; upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm, introducing the outlet of the first ion exchange treatment bed into a second ion exchange treatment bed; and upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 60 μS/cm, redirecting the introduction of the aqueous stream to the second ion exchange treatment bed and regenerating the first ion exchange bed.

Подробнее
Номер записи: 68
25-02-2016 дата публикации

METHOD FOR PRODUCING ETHYLENE OXIDE

Номер: US20160052899A1
Автор: IGUCHI Shingo, KAWAGUCHI Yukimasa
Принадлежит:

[Problem] To provide a method by which an amount of production of ethylene glycol as a by-product is reduced and a yield of ethylene oxide can be improved in a process for producing ethylene oxide. 1. A method for producing ethylene oxide comprising:supplying an ethylene oxide-containing reaction product gas produced in an ethylene oxidation reaction step, in which ethylene is subjected to catalytic gas phase oxidation using a molecular oxygen-containing gas in the presence of a silver catalyst, to an ethylene oxide absorption column;bringing the reaction product gas into contact with an absorption liquid supplied to the ethylene oxide absorption column;supplying an ethylene oxide-containing column bottom liquid of the ethylene oxide absorption column to an ethylene oxide purification system; andsupplying an ethylene oxide-containing uncondensed gas discharged from the ethylene oxide purification system to an ethylene oxide reabsorption column, whereinan operation pressure (column top pressure) of the ethylene oxide reabsorption column is set to 3 to 50 kPa gauge.2. The production method according to claim 1 , whereinthe operation pressure (column top pressure) of a ethylene oxide stripper column is set to 3 to 60 kPa gauge.3. The production method according to claim 1 , whereina pressure control valve is not disposed in a conduit for supplying an uncondensed gas to the ethylene oxide reabsorption column from the ethylene oxide stripper column through a ethylene oxide dehydrating column.4. The production method according to claim 1 , whereina suction pressure of a compressor used for boosting the uncondensed gas of the ethylene oxide reabsorption column is 3 to 5 kPa gauge.5. The method for producing ethylene oxide according to claim 1 , comprising:supplying the ethylene oxide-containing uncondensed gas discharged from a column top part of the ethylene oxide reabsorption column to a carbon dioxide gas absorption column; andrecovering a carbon dioxide gas. The ...

Подробнее
Номер записи: 69
25-02-2016 дата публикации

METHOD FOR PRODUCING ETHYLENE OXIDE

Номер: US20160052900A1
Автор: MORIKAWA Noriji, TAKINAMI Takahiro, WATANABE Akimasa
Принадлежит:

[Problem] To provide a novel technology by which energy efficiency can be further improved in a process for producing ethylene oxide. 1an ethylene oxidation reaction step in which ethylene is subjected to catalytic vapor-phase oxidation using a molecular oxygen-containing gas in the presence of a silver catalyst;supplying an ethylene oxide-containing reaction product gas produced in the ethylene oxidation reaction step to an ethylene oxide absorption column;bringing the reaction product gas into contact with an absorption liquid supplied to the ethylene oxide absorption column;supplying an ethylene oxide-containing column bottom liquid of the ethylene oxide absorption column to an ethylene oxide purification system;purifying ethylene oxide in the ethylene oxide purification system;supplying at least a part of a carbon dioxide gas-containing gas discharged from a column top part of the ethylene oxide absorption column to a carbon dioxide gas absorption column;extracting a carbon dioxide gas-rich absorption liquid obtained by contact of the carbon dioxide gas-containing gas with an absorption liquid as a column bottom liquid of the carbon dioxide gas absorption column;supplying the carbon dioxide gas-rich absorption liquid to an upper part of the carbon dioxide gas stripper column;stripping the carbon dioxide gas from the carbon dioxide gas-rich absorption liquid; anddischarging the carbon dioxide gas from a column top part of the carbon dioxide gas stripper column as an exhaust gas, whereinthe ethylene oxide purification system includes an ethylene oxide purification column provided with a reboiler in a lower part thereof, anda heating medium for heating the reboiler is heated by heat exchange with the exhaust gas.. A method for producing ethylene oxide comprising: The present invention relates to a method for producing ethylene oxide.Nowadays, ethylene oxide is produced by catalytic gas phase oxidation of ethylene using a molecular oxygen-containing gas in the ...

Подробнее
Номер записи: 70
13-02-2020 дата публикации

Process for preparing a 5-alken-1-yne compound, (6z)-1,1-dialkoxy-6-nonen-2-yne compound, (2e,6z)-2,6-nonadienal and (2e)-cis-6,7-epoxy-2-nonenal, and 1,1-dialkoxy-6-nonen-2-yne compound

Номер: US20200048161A1
Автор: Takeshi Kinsho, Tomohiro Watanabe, Yuki Miyake
Принадлежит: Shin Etsu Chemical Co Ltd

The object of the present invention is to provide a process for preparing a 5-alken-1-yne compound efficiently at low costs and a process for preparing (2E,6Z)-2,6-nonadienal by making use of the aforesaid process for preparing the 5-alken-1-yne compound. There is provided a process for preparing a 5-alken-1-yne compound of the following formula (4): Y-Z-CR 1 ═CR 2 —(CH 2 ) 2 —C≡CH (4) in which Y in formula (4) represents a hydrogen atom or a hydroxyl group, the process comprising at least steps of: subjecting (i) an alkenylmagnesium halide compound prepared from a haloalkene compound of the following formula (1): Y-Z-CR 1 ═CR 2 —(CH 2 ) 2 -X 1 (1) and (ii) an alkyne compound of the following formula (2): X 2 =C≡C—Si(R 3 )(R 4 )(R 5 ) (2) to a coupling reaction to form a silane compound of the following formula (3): Y-Z-CR 1 ═CR 2 —(CH 2 ) 2 —C≡C—Si(R 3 )(R 4 )(R 5 ) (3); and subjecting the silane compound (3) to a desilylation reaction to form the 5-alken-1-yne compound (4).

Подробнее
Номер записи: 71
01-03-2018 дата публикации

METHOD FOR THE EPOXIDATION OF PROPENE WITH HYDROGEN PEROXIDE

Номер: US20180057473A1
Автор: REIN Daniel, Schallenberg Jörg, Stock Juergen, THIELE Georg Friedrich
Принадлежит: EVONIK DEGUSSA GmbH

The method for the epoxidation of propene comprises continuously reacting propene with hydrogen peroxide in the presence of a homogeneous epoxidation catalyst in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase using a loop reactor with mixing of the liquid phases, withdrawing aqueous phase from the loop reactor and extracting it by liquid-liquid-extraction using propene as extractant to provide an extract comprising propene and propene oxide. 112-. (canceled)13. A method for the epoxidation of propene , comprising continuously reacting propene with hydrogen peroxide in the presence of a homogeneous epoxidation catalyst , wherein:a) the reaction is carried out in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase using a loop reactor with mixing of the liquid phases;b) the aqueous phase withdrawn from the loop reactor is extracted by liquid-liquid-extraction using propene as extractant to provide an extract comprising propene and propene oxide.14. The method of claim 13 , wherein reaction mixture is continuously withdrawn from the loop reactor claim 13 , the withdrawn reaction mixture is separated into a separated aqueous phase and a separated organic phase and a part or all of the separated aqueous phase is extracted.15. The method of claim 13 , wherein the aqueous liquid phase of the reaction mixture comprises less than 30% by weight of water soluble solvents.16. The method of claim 13 , wherein liquid-liquid-extraction is carried out in an extraction column operated in counter current flow.17. The method of claim 13 , wherein the propene contained in the extract is passed to the loop reactor.18. The method of claim 17 , wherein the extract is passed to the loop reactor without separating propene oxide.19. The method of claim 17 , wherein the extractant comprises all or a part of the propene starting material.20. The method of claim 13 , wherein the extractant comprises propene separated from an ...

Подробнее
Номер записи: 72
10-03-2016 дата публикации

HIGHLY ACTIVE, SELECTIVE, ACCESSIBLE, AND ROBUST ZEOLITIC TI-EPOXIDATION CATALYST

Номер: US20160067694A1
Автор: Katz Alexander S., Ouyang Xiaoying, Zones Stacey Ian
Принадлежит:

Provided is a process of conducting olefin epoxidation which comprises contacting an olefin and an oxidant in the presence of Ti-UCB-4 to thereby prepare an epoxide. The Ti-UCB-4 catalyst is prepared by delaminating a B-SSZ-70 precursor and substituting Ti atoms for the boron atoms on the surface of the zeolite material lattice framework. 1. A process of conducting olefin epoxidation which comprises contacting an olefin and an oxidant in the presence of Ti-UCB-4 to thereby prepare an epoxide.2. The process of claim 1 , wherein the olefin has from 3-12 carbon atoms.3. The process of claim 2 , wherein the olefin comprises propylene.4. The process of claim 1 , wherein the olefin comprises greater than 12 carbon atoms.5. The process of claim 1 , wherein the oxidant is TBHP or cumene hydroperoxide.6. The process of claim 1 , wherein a solvent is used for the reaction which comprises an alkane.7. The process of claim 1 , wherein a solvent is used for the reaction which comprises octane.8. The process of claim 1 , wherein the Ti-UCB-4 catalyst is prepared by delaminating a B-SSZ-70 precursor and substituting Ti atoms for the boron atoms on the surface of the zeolite material lattice framework.9. The process of claim 1 , wherein the Ti-UCB-4 comprises a zeolite material having Ti heteroatoms on the external surface of the zeolite material lattice framework claim 1 , and B heteroatoms claim 1 , or silanols created from boron hydrolysis claim 1 , throughout the remainder of the lattice framework.10. The process of claim 9 , wherein the lattice framework of the Ti-UCB-4 comprises large pore 12 member ring or larger openings at the external surface of the framework claim 9 , and 10 member ring or smaller openings beneath the external surface large pore openings.11. The process of claim 10 , wherein the external surface of the framework comprises 12 member ring openings with 10 member ring openings beneath the external surface 12 member ring openings.12. A process of conducting ...

Подробнее
Номер записи: 73
27-02-2020 дата публикации

Process for preparing (e2,z6)-2,6-nonadienal

Номер: US20200062682A1
Автор: Miyoshi Yamashita, Takeshi Kinsho, Yuki Miyake
Принадлежит: Shin Etsu Chemical Co Ltd

The object of the present invention is to provide an industrial and economical process for preparing (E2,Z6)-2,6-nonadienal of the following formula (4): The present invention provides a process for preparing (E2,Z6)-2,6-nonadienal (4), comprising at least steps of: subjecting (Z3,Z6)-3,6-nonadien-1-ol of the following formula (1): to oxidation with a sulfoxide compound of the following formula (2): CH 3 (R′)S═O  ( 2 ) in which R 1 represents a monovalent hydrocarbon group having from 1 to 12 carbon atoms, in the presence of a sulfur trioxide complex and an amine compound of the following formula (3): N(R 2 )(R 3 )(R 4 )  ( 3 ) in which R 2 , R 3 , and R 4 each independently represent a monovalent hydrocarbon group having from 1 to 12 carbon atoms, or R 3 and R 4 may be bonded to each other to form a divalent hydrocarbon group having from 3 to 12 carbon atoms, R 3 -R 4 , to form the aforesaid (E2,Z6)-2,6-nonadienal (4).

Подробнее
Номер записи: 74
27-02-2020 дата публикации

PROCESS FOR PREPARING (E2)-CIS-6,7-EPOXY-2-NONENAL

Номер: US20200062725A1
Автор: Kinsho Takeshi, Miyake Yuki, Yamashita Miyoshi
Принадлежит:

The object of the present invention is to provide an industrial and economical process for preparing (E2)-cis-6,7-epoxy-2-nonenal of the following formula (3): 2. The process according to claim 1 , wherein the oxidation is carried out using an oxidizing agent selected from the group consisting of a hypervalent iodine compound claim 1 , a chromic acid compound claim 1 , a sulfoxide compound of the following formula (4) claim 1 , a manganese compound claim 1 , a nitroxyl radical compound claim 1 , and a perruthenate compound:{'br': None, 'sub': '3', 'sup': '1', 'CH(R)S═O\u2003\u2003 (4)'}{'sup': '1', 'in which Rrepresents a monovalent hydrocarbon group having from 1 to 12 carbon atoms.'}3. The process according to claim 2 , wherein the oxidizing agent is a sulfoxide compound of the following formula (4):{'br': None, 'sub': '3', 'sup': '1', 'CH(R)S═O\u2003\u2003 (4)'}{'sup': '1', 'in which Rrepresents a monovalent hydrocarbon group having from 1 to 12 carbon atoms, and'} {'br': None, 'sup': 2', '3', '4, 'N(R)(R)(R)\u2003\u2003 (5)'}, 'the oxidation is carried out with the sulfoxide compound in the presence of a sulfur trioxide complex and an amine compound of the following formula (5){'sup': 2', '3', '4', '3', '4, 'in which R, R, and Reach independently represents a monovalent hydrocarbon group having from 1 to 12 carbon atoms, or Rand Rmay be bonded to each other'}{'sup': 3', '4, 'to form a divalent hydrocarbon group having from 3 to 12 carbon atoms, R-R.'}4. The process according to claim 3 , wherein the sulfur trioxide complex is selected from the group consisting of a sulfur trioxide pyridine complex claim 3 , a sulfur trioxide trimethylamine complex claim 3 , a sulfur trioxide triethylamine complex claim 3 , a sulfur trioxide ethyldiisopropylamine complex claim 3 , and a sulfur trioxide N claim 3 ,N-dimethylformamide complex.5. The process according to claim 3 , wherein the amine compound is selected from the group consisting of a trialkylamine compound and a ...

Подробнее
Номер записи: 75
07-03-2019 дата публикации

METHOD FOR PRODUCING POROUS BODIES WITH ENHANCED PROPERTIES

Номер: US20190070588A1
Автор: Julian Matthew, Suchanek Wojciech L.
Принадлежит: Scientific Design Company, Inc.

A precursor mixture for producing a porous body, wherein the precursor mixture comprises: (i) milled alpha alumina powder having a particle size of 0.1 to 6 microns, (ii) boehmite powder that functions as a binder of the alpha alumina powders, and (iii) burnout materials having a particle sizes of 1-10 microns. In some embodiments, an unmilled alpha alumina powder having a particle size of 10 to 100 microns is also included in said precursor mixture. Also described herein is a method for producing a porous body in which the above-described precursor mixture is formed to a given shape, and subjected to a heat treatment step in which the formed shape is sintered to produce the porous body. 1. A method for producing a porous body , the method comprising:providing a precursor mixture comprising (i) milled alpha alumina powder having a particle size of 0.1 to 6 microns, (ii) boehmite powder that functions as a binder of the alpha alumina powders, and (iii) burnout material having a particle size of 1-10 microns;forming a predetermined shape; andsubjecting the shape to a heat treatment step in which the shape is sintered to produce the porous body.2. The method of claim 1 , further comprising unmilled alpha alumina powder having a particle size of 10 to 100 microns in said precursor mixture.3. The method of claim 2 , wherein the weight ratio of milled to unmilled alpha alumina powder is in a range of 0.25:1 to about 5:1.4. The method of claim 1 , wherein unmilled alpha alumina powder is excluded from the precursor mixture.5. The method of claim 1 , wherein the method comprises:(i) dispersing boehmite into water to produce a dispersion of boehmite;(ii) adding a milled alpha alumina powder having a particle size of 0.1 to 6 microns to the dispersion of boehmite, and mixing until a first homogeneous mixture is obtained, wherein said boehmite functions as a binder of the alpha alumina powder;(iii) adding burnout materials having a particle size of 1-10 microns, and mixing ...

Подробнее
Номер записи: 76
07-03-2019 дата публикации

EPOXY COMPOUND, CURABLE COMPOSITION, CURED PRODUCT, METHOD OF PRODUCING EPOXY COMPOUND, AND REACTIVE DILUENT

Номер: US20190071409A1
Автор: KAMEYAMA Atsushi, Seki Takashi, Sone Hisashi, SUZUKI Hiroaki, TAKATA Shohei, UENO Ryuichi
Принадлежит: JXTG NIPPON OIL & ENERGY CORPORATION

The present invention discloses a monoepoxy compound represented by the following Formula (1), a curable composition containing the same, a cured product therefrom, a method of producing the monoepoxy compound, and a reactive diluent containing the monoepoxy compound. The monoepoxy compound represented by the Formula (1) is useful in that it is capable of reducing the viscosity of a curable composition containing the monoepoxy compound, while preventing a reduction in the heat resistance of the curable composition as well as a reduction in the weight of the curable composition upon curing. 2. The monoepoxy compound according to claim 1 , comprising a stereoisomer(s) of the compound represented by the Formula (1) claim 1 , wherein the ratio claim 1 , as measured by C-NMR analysis claim 1 , of a peak area(s) derived from a stereoisomer(s) in which the bridgehead of the norbornane skeleton and the vinyl group in the Formula (1) are in a trans relationship claim 1 , to the total peak area within the chemical shift range of from 140 to 145 ppm claim 1 , is 66% or more.4. The monoepoxy compound according to claim 1 , wherein claim 1 , in the C-NMR analysis of the compound represented by the Formula (1) claim 1 , the ratio of the total peak area within the chemical shift range of from 140 to 142 ppm to the total peak area within the chemical shift range of from 140 to 145 ppm is 66% or more.5. The monoepoxy compound according to claim 2 , wherein claim 2 , in the C-NMR analysis of the compound represented by the Formula (1) claim 2 , the ratio of the area of the first peak from the low magnetic field side claim 2 , among peaks within the chemical shift range of from 140 to 142 ppm claim 2 , to the total peak area within the chemical shift range of from 140 to 145 ppm is 35% or more.6. A curable composition comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the monoepoxy compound according to ; and'}one kind selected from the group consisting of a curing agent, a ...

Подробнее
Номер записи: 77
05-03-2020 дата публикации

ANTIFUNGAL COMPOUNDS DERIVED FROM LAVENDER OIL

Номер: US20200071284A1
Автор: KHAYYAT Suzan
Принадлежит: KING ABDULAZIZ UNIVERSITY

Epoxides and hydroperoxide compounds having antifungal activities derived from the oxidation linalyl acetate, a major component of lavender oil, are disclosed. Also, disclosed are pharmaceutical composition and methods of treating and protecting a subject from fungal infection. 120-. (canceled)23: The pharmaceutical composition of claim 21 , further comprising:water and/or a buffer.24: The pharmaceutical composition of claim 23 , wherein the buffer is selected from the group consisting of a phosphate buffer claim 23 , a citrate buffer claim 23 , an acetate buffer claim 23 , a borate buffer claim 23 , and a carbonate/bicarbonate buffer.25: The pharmaceutical composition of claim 21 , further comprising:one or more antiviral drugs.26: The pharmaceutical composition of claim 25 , wherein the antiviral drug is one or more antiviral agents selected from the group consisting of ketoconazole claim 25 , fluconazole claim 25 , isavuconazole claim 25 , itraconazole claim 25 , posaconazole claim 25 , posaconazole claim 25 , voriconazole claim 25 , anidulafungin claim 25 , caspofungin claim 25 , and micafungin.27: The pharmaceutical composition of claim 21 , further comprising:one or more antibiotic compounds.28: The pharmaceutical composition of claim 27 , wherein the antibiotic compound is one or more antibiotics selected from the group consisting of Vancomycin claim 27 , Ceftobiprole claim 27 , Ceftaroline claim 27 , Clindamycin claim 27 , Dalbavancin claim 27 , Daptomycin claim 27 , Fusidic acid claim 27 , Linezolid claim 27 , Mupirocin claim 27 , Oritavancin claim 27 , Tedizolid claim 27 , Telavancin claim 27 , Tigecyclin claim 27 , Aminoglycosides claim 27 , Carbapenems claim 27 , Ceftazidime claim 27 , Cefepime claim 27 , Ceftobiprole claim 27 , Ceftolozane/tazobactam claim 27 , a fluoroquinolone claim 27 , Piperacillin/tazobactam claim 27 , Ticarcillin/clavulanic acid claim 27 , Linezolid claim 27 , Streptogramins claim 27 , Tigecycline claim 27 , and Daptomycin.29: The ...

Подробнее
Номер записи: 78
19-03-2015 дата публикации

METHOD FOR PREPARATION OF 2-(2,3-DIMETHYLPHENYL)-1-PROPANAL

Номер: US20150080287A1
Автор: Bujok Robert, Elzner Stephan, KULESZA Anna, Wojciechowski Krzysztof, Wrobel Zbigniew, Zaragoza Doerwald Florencio
Принадлежит:

The invention discloses a method for preparation of 2-(2,3-dimethylphenyl)-1-proponal from bromo 2,3-dimethyl-benzene and aceton, its use in perfumes and its use for the preparation of medetomidine. 2. The method according to claim 1 , wherein the catalyst (N-cat) is selected from the group consisting of acetic acid claim 1 , formic acid claim 1 , trifluoroacetic acid claim 1 , methanesulfonic acid claim 1 , p-toluenesulfonic acid claim 1 , HCl claim 1 , HBr claim 1 , HSO claim 1 , HPO claim 1 , BCl claim 1 , BFOEt claim 1 , MgCl claim 1 , MgBr claim 1 , AlCl claim 1 , ZnCl claim 1 , Cu(BF) claim 1 , aluminosilicates claim 1 , acidic ion exchange resins claim 1 , carbon treated with HCl claim 1 , HSOor HNO claim 1 , and mixtures thereof.3. The method according to claim 1 , wherein reaction (N-reac) is done in a solvent (N-solv);solvent (N-solv) is selected from the group consisting of water, tert-butanol, isopropanol, acetonitrile, propionitrile, THF, methyl-THF, NMP, dioxane, 1,2-dimethoxyethane, dichloromethane, 1,2-dichloroethane, chloroform, toluene, benzene, chlorobenzene, hexane, cyclohexane, ethyl acetate, acetic acid, formic acid, trifluoroacetic acid and mixtures thereof.5. The method according to claim 4 , wherein reagent (O-reag) is selected from the group consisting of peracetic acid claim 4 , tert-butylhydroperoxide claim 4 , oxygen claim 4 , air claim 4 , sodium hypochlorite claim 4 , aqueous HO claim 4 , HOdissolved in acetic acid claim 4 , HOdissolved in trifluoroacetic acid claim 4 , and mixtures thereof.8. Use of compound of formula (XXI) as a fragrance claim 1 , with the compound of formula (XXI) as defined in .9. Use of compound of formula (XXI) for the preparation of medetomidine claim 1 , with the compound of formula (XXI) as defined in . This application is the national stage entry of International Patent Application No. PCT/EP2012/072797 having a filing date of Nov. 15, 2012, which claims the filing benefit of European Patent Application No. ...

Подробнее
Номер записи: 79
19-03-2015 дата публикации

PROCESS FOR THE PRODUCTION OF ETHYLENE OXIDE

Номер: US20150080590A1
Автор: Jovanovic Jovan, Nisbet Timothy Michael, OLTHOF Timothe Johannes, Verhaak Michiel Johannes Franciscus Maria
Принадлежит:

The invention relates to a process for the production of ethylene oxide, comprising the steps of: producing ethylene resulting in a stream comprising ethylene and ethane; separating the stream comprising ethylene and ethane into a stream comprising ethylene and ethane in which stream the amount of ethylene is greater than the amount of ethane and a stream comprising ethane and ethylene in which stream the amount of ethane is greater than the amount of ethylene; producing ethylene oxide by subjecting ethylene and ethane from the stream comprising ethylene and ethane, in which stream the amount of ethylene is greater than the amount of ethane, to oxidation conditions resulting in a stream comprising ethylene oxide, unconverted ethylene and ethane; and recovering ethylene oxide from the stream comprising ethylene oxide, unconverted ethylene and ethane 1. A process for the production of ethylene oxide , comprising the steps of:producing ethylene resulting in a stream comprising ethylene and ethane;separating the stream comprising ethylene and ethane into a stream comprising ethylene and ethane in which stream the amount of ethylene is greater than the amount of ethane and a stream comprising ethane and ethylene in which stream the amount of ethane is greater than the amount of ethylene;producing ethylene oxide by subjecting ethylene and ethane from the stream comprising ethylene and ethane, in which stream the amount of ethylene is greater than the amount of ethane, to oxidation conditions resulting in a stream comprising ethylene oxide, unconverted ethylene and ethane; andrecovering ethylene oxide from the stream comprising ethylene oxide, unconverted ethylene and ethane.2. A process according to claim 1 , wherein unconverted ethylene from the stream comprising ethylene oxide claim 1 , unconverted ethylene and ethane is recycled to the step of producing ethylene oxide.3. A process according to claim 2 , wherein a stream comprising unconverted ethylene and ethane is ...

Подробнее
Номер записи: 80
24-03-2016 дата публикации

ALKYLENE OXIDE CATALYST AND USE THEREOF

Номер: US20160082423A9
Автор: Bhasin Madan M., Liu Albert C., Natal Manuel A. W., Soo Hwaili
Принадлежит:

A supported silver catalyst and use thereof in a process for producing an alkylene oxide, such as ethylene oxide, by the direct oxidation of an alkylene with oxygen or an oxygen-containing gas, wherein the catalyst provides improved stability and improved resilience to reactor upsets and timely recovery to substantially pre-upset levels of catalyst activity and/or efficiency. In some embodiments, the catalyst also exhibits improved activity. A catalyst capable of producing ethylene oxide at a selectivity of at least 87 percent while achieving a work rate of at least 184 kg/h/mat a temperature of no greater than 235° C. when operated in a process where the inlet feed to a reactor containing the catalyst comprises ethylene, oxygen, and carbon dioxide, wherein the concentration of carbon dioxide in the inlet feed is greater than or equal to 2 mole percent. 151-. (canceled)53. The supported silver catalyst of prepared on an alumina-containing carrier claim 52 , the carrier comprising greater than about 90 weight percent alpha-alumina and less than about 30 ppm acid-leachable alkali metals by weight claim 52 , the weight percent of the alumina and the concentration of the acid-leachable alkali metals being calculated on the weight of the carrier claim 52 , wherein the acid-leachable alkali metals are selected from lithium claim 52 , sodium claim 52 , potassium claim 52 , and mixtures thereof; the carrier having deposited thereon: silver in an amount greater than about 25 weight percent claim 52 , based on the weight of the catalyst; cesium in an amount from about 0.005 to about 0.30 percent by weight claim 52 , and sodium in an amount from about 10 ppm to about 200 ppm by weight and optional additional solid promoters claim 52 , the amounts of the deposited cesium and sodium and optional additional solid promoters being calculated on the weight of the catalyst.54. The supported silver catalyst of prepared on an alumina-containing carrier claim 52 , the carrier comprising ...

Подробнее
Номер записи: 81
14-03-2019 дата публикации

METHOD FOR PRODUCING ETHYLENE OXIDE

Номер: US20190077778A1
Автор: IGUCHI Shingo, SUZUKI Hideto
Принадлежит:

According to the present invention, there is provided means for suppressing the occurrence of corrosion on the inner tube side in a heat exchanger and enabling continuous production for a long time period in a process for producing ethylene oxide. 1. A method for producing ethylene oxide , the method comprising:supplying a raw material gas including ethylene, molecular oxygen, and a chlorine compound to an ethylene oxidation reactor;subjecting the ethylene and the molecular oxygen in the raw material gas to catalytic vapor phase oxidation in the ethylene oxidation reactor in the presence of a silver catalyst, and thereby producing a gas including ethylene oxide, water, and a chlorine compound; andcooling a gas to be cooled including the water and the chlorine compound using a heat exchanger,wherein in the heat exchanger, the gas to be cooled is cooled at a linear gas velocity on the heat exchanger inner tube side of 7 m/s or higher.2. The production method according to claim 1 , whereinin the heat exchanger, the temperature at the inlet of the heat exchanger inner tubes is higher than or equal to the dew point of water, and the gas to be cooled is cooled such that the temperature at the outlet of the heat exchanger inner tubes becomes lower than or equal to the dew point of water.3. The production method according to claim 1 , whereinthe concentration of the chlorine compound in the raw material gas is from 0.01 ppm by volume to 1,000 ppm by volume based on the volume of the raw material gas.4. The production method according to claim 1 , whereinin the heat exchanger, a heat-absorbing medium for cooling the gas to be cooled is a gas including ethylene, molecular oxygen, and a chlorine compound.5. The production method according to claim 1 , wherein [{'br': None, '[Mathematical Formula 1]'}, {'br': None, '11≤Content of chromium (mass %)+2×content of molybdenum (mass %)≤24 \u2003\u2003(Formula 1)'}], 'the heat exchanger inner tubes are made of stainless steel, and the ...

Подробнее
Номер записи: 82
14-03-2019 дата публикации

A PROCESS FOR THE PREPARATION OF PROPYLENE OXIDE

Номер: US20190077779A1
Автор: HENN Timo, LUEDERITZ Thomas, MANNWEILER Jochen, Mueller Christian, Mueller Ulrich, Parvulescu Andrei-Nicolae, RIEDEL Dominic, SCHELLING Heiner, Teles Joaquim Henrique, URBANCZYK Daniel, Weber Markus, Wegerle Ulrike, WOERZ Nicolai Tonio
Принадлежит: BASF SE

A continuous process for the preparation of propylene oxide, comprising a start-up stage and normal run stage, wherein the normal run stage comprises (i) continuously providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, a formate salt, water and optionally propane, wherein in the liquid feed stream, the molar amount of the formate salt relative to the molar amount of hydrogen peroxide at a given point of time during the normal run stage is a(Fo/HO); (ii) continuously passing the liquid feed stream provided in (i) into an epoxidation zone comprising a catalyst comprising a titanium zeolite having framework type MWW, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the formate salt, optionally propene, and optionally propane; (iii) continuously removing an effluent stream from the epoxidation zone, the effluent stream comprising propylene oxide, acetonitrile, water, at least a portion of the formate salt, optionally propene, and optionally propane; wherein the normal run stage is characterized in an average rate of change of a(Fo/HO) of less than 0 h. 1. A continuous process for preparing propylene oxide comprising a start-up stage and a normal run stage , wherein the normal run stage comprises:{'sup': 'N', 'sub': 2', '2, 'continuously providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, a formate salt, water and optionally propane, wherein in the liquid feed stream, the molar amount of the formate salt relative to the molar amount of hydrogen peroxide at a given point of time during the normal run stage is a(Fo/HO);'}(ii) continuously passing the liquid feed stream provided in (i) into an epoxidation zone comprising a catalyst comprising a titanium zeolite having framework type MWW, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, ...

Подробнее
Номер записи: 83
24-03-2016 дата публикации

Process for the epoxidation of olefins

Номер: US20160083360A1
Автор: An-Pang Tu, Kuen-Yuan Hwang, Ping-Chieh Wang, Sung-Kuang Chung
Принадлежит: Chang Chun Plastics Co Ltd

The subject invention is related to a process for the epoxidation of olefin with peroxide, comprising reacting peroxide with olefin in the presence a solvent, wherein the solvent has Hansen Solubility Parameters (HSPs) of δ T,solvent and δ H,solvent and the epoxide product has Hansen Solubility Parameters (HSPs) of δ T,product and δ H,product , and wherein: δ T,product −6≦δ T,solvent ≦δ T,product +6, and δ H,product −6≦δ H,solvent .

Подробнее
Номер записи: 84
31-03-2022 дата публикации

PROCESS FOR PREPARING AN EPOXIDATION CATALYST

Номер: US20220097028A1
Автор: Kulkarni Apoorva, McKeen John C., Santos Castro Vera P., Sussman Victor J., Syed Mohmed A., Todd Clifford S., Tway Cathy L.
Принадлежит:

A process for preparing a silver-containing catalyst for the selective oxidation of ethylene to ethylene oxide including the steps of: (a) providing a multimodal support, (b) preparing an impregnation solution comprising a silver component, (c) impregnating, at least once, the multimodal support of step (a) with the silver-containing impregnation solution of step (b) to form an impregnated support; (d) subjecting the impregnated multimodal support from step (c) to a removal means, such as a centrifuge, at least once, for a time sufficient to remove impregnated silver impregnation solution from the multimodal support and to control the amount of silver in the pores of the multimodal support by selectively removing impregnated silver impregnation solution from a set of larger pores in the multimodal support; (e) roasting, at least once, the multimodal support after the step (d); (f) optionally, repeating the impregnation step (c), (g) optionally, repeating the centrifugation step (d), and (h) optionally, repeating the calcination step (e). 1. A process for preparing a silver-containing catalyst for the epoxidation of olefins comprising the steps of:(a) providing a porous multimodal support having at least two modes of pore size distributions;(b) providing a first silver-containing impregnation solution for impregnating the first silver-containing impregnation solution into the pores of the porous multimodal support;(c) impregnating the porous multimodal support with the first silver-containing impregnation solution from step (b) to provide the porous multimodal support with a first amount of first silver-containing impregnation solution;(d) centrifuging the impregnated first silver-containing impregnation solution from the porous multimodal support to provide the porous multimodal support with a second amount of first silver-containing impregnation solution remaining in the support pores;(e) roasting the impregnated porous multimodal support from step (d);(f) ...

Подробнее
Номер записи: 85
21-03-2019 дата публикации

Halogen Selective Detection Gas Chromatography for the On-Line Analysis and Control of Selective Oxidation Chemical Production Processes

Номер: US20190083951A1
Автор: Buchner, JR. JAMES D.
Принадлежит:

A method for process monitoring and control of a chemical reactor in which a chemical reaction utilizing a halogenated selectivity modifier is performed includes: measuring a level of halogenated components in an inlet stream of a reactor inlet; measuring a level of halogenated components in an outlet stream of a reactor outlet; based on the level of halogenated components at the inlet stream and the outlet stream, determining a process performance indicator associated with a halogenated component; and adjusting an amount of halogenated selectivity modifier added to the reactor based on the process performance indicator. 1. A method for process monitoring and control of a chemical reactor in which a chemical reaction utilizing a halogenated selectivity modifier is performed comprising:measuring a level of halogenated components in an inlet stream of a reactor inlet;measuring a level of halogenated components in an outlet stream of a reactor outlet;based on the level of halogenated components at the inlet stream and the outlet stream, determining a process performance indicator associated with a halogenated component; andadjusting an amount of halogenated selectivity modifier added to the reactor, an amount of reactor feedstock, a flow rate, and/or a reactor temperature, based on the process performance indicator.2. The method of claim 1 , wherein the level of halogenated components in the inlet stream and the outlet stream includes all halogenated components contained in the inlet stream and outlet stream.3. The method of claim 1 , wherein the level of halogenated components in the inlet stream and outlet stream is measured with a halogen-selective detector using gas chromatography.4. The method of claim 1 , wherein the level of halogenated components in the inlet stream and outlet stream is measured without significant chemical interference.5. The method of claim 1 , further comprising separating halogenated components from the inlet stream and/or the outlet stream ...

Подробнее
Номер записи: 86
21-03-2019 дата публикации

Crystalline Germanosilicate Materials Of New CIT-13 Topology And Methods Of Preparing The Same

Номер: US20190083962A1
Автор: BOAL BEN W., Davis Mark E., Kang Jong Hun, SCHMIDT JOEL E.
Принадлежит:

The present disclosure is directed to the use of novel crystalline germanosilicate compositions in affecting a range of organic transformations. In particular, the crystalline germanosilicate compositions are extra-large-pore compositions, designated CIT-13 possessing 10- and 14-membered rings. 2. The process of comprising:(c) cracking, hydrocracking, or dehydrogenating a hydrocarbon;(d) dewaxing a hydrocarbon feedstock;(d) converting paraffins to aromatics:(e) isomerizing or disproportionating an aromatic feedstock;(f) alkylating an aromatic hydrocarbon;(g) oligomerizing an alkene;(i) separating and sorbing a lower alkane from a hydrocarbon feedstock;(j) isomerizing an olefin;(k) producing a higher molecular weight hydrocarbon from lower molecular weight hydrocarbon; or(l) reforming a hydrocarbon.3. The process of comprising converting synthesis gas containing hydrogen and carbon monoxide to a hydrocarbon stream using a catalyst comprising the crystalline microporous germanosilicate composition and a Fischer-Tropsch catalyst.4. The process of comprising reducing the concentration of an organic halide in an initial hydrocarbon product claim 1 , the initial hydrocarbon product containing an undesirable level of the organic halide claim 1 , the process comprising contacting at least a portion of the initial hydrocarbon product with a composition comprising the crystalline microporous germanosilicate composition claim 1 , under organic halide absorption conditions to reduce the halogen concentration in the hydrocarbon.6. The process of claim 1 , wherein the crystalline microporous germanosilicate composition exhibits a powder X-ray diffraction (XRD) pattern exhibiting at least seven of the characteristic peaks at 6.45±0.2 claim 1 , 7.18±0.2 claim 1 , 12.85±0.2 claim 1 , 18.26±0.2 claim 1 , 18.36±0.2 claim 1 , 18.63±0.2 claim 1 , 20.78±0.2 claim 1 , 21.55±0.2 claim 1 , 23.36±0.2 claim 1 , 24.55±0.2 claim 1 , 26.01±0.2 claim 1 , and 26.68±0.2 degrees 2-θ.7. The process ...

Подробнее
Номер записи: 87
19-06-2014 дата публикации

PROCESS FOR THE MANUFACTURE OF A 1,2-EPOXIDE AND A DEVICE FOR CARRYING OUT SAID PROCESS

Номер: US20140171666A1
Автор: BERNHARDT Stefan, Muppa Prasad, Postma Ron, Rausch Hans, Schallenberg Jörg, Stock Juergen, Van den Berg Bart, WIEDERHOLD Holger
Принадлежит: Momentive Specialty Chemicals Inc.

Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process. 1. A process for the manufacture of an epoxide , comprising:forming an aqueous phase comprising a water-soluble catalyst and oxidant in a reactor;providing a terminal olefin having a water solubility ranging from 0.01 g/L to 100 g/L in an amount sufficient to form an organic phase at a volumetric ratio of the aqueous phase to the organic phase from 10:1 to 1:5;dispersing the organic phase into aqueous phase to form organichase droplets having an average size less than 3 mm in the aqueous phase;reacting the terminal olefin with the oxidant in the presence of water-soluble catalyst; andseparating the organic phase from the aqueous phase, wherein the separated aqueous phase comprises the water-soluble catalyst.2. The process of claim 1 , wherein the molar ratio of terminal olefin to oxidant comprises the range from 12:1 to 1:1.3. The process of claim 1 , wherein the manufacture of the epoxide comprises a continuous process4. The process of claim 1 , wherein the oxidant comprises hydrogen peroxide claim 1 , a precursor thereof claim 1 , or a compound selected from the group consisting of organic peroxides claim 1 , peracids claim 1 , and combinations thereof.6. The process of claim 1 , wherein the reactor comprises a continuous stirred reactor claim 1 , a plug flow reactor claim 1 , or a loop reactor.7. The process of claim 1 , ...

Подробнее
Номер записи: 88
19-06-2014 дата публикации

Micropowder and molding containing a zeolitic material containing ti and zn

Номер: US20140171667A1
Автор: Andrei-Nicolae Parvulescu, Bianca Seelig, Joaquim Henrique Teles, Karsten Seidel, Markus Weber, Peter Resch, Philip Kampe, Robert Bayer, Ulrich Mueller
Принадлежит: BASF SE

The present invention relates to a micropowder, wherein the particles of the micropowder have a Dv10 value of at least 2 micrometer and the micropowder comprises mesopores which have an average pore diameter in the range of from 2 to 50 nm and comprise, based on the weight of the micropowder, at least 95 weight-% of a microporous aluminum-free zeolitic material of structure type MWW containing titanium and zinc.

Подробнее
Номер записи: 89
19-03-2020 дата публикации

A PROCESS FOR PREPARING A MOLDING COMPRISING ZINC AND A TITANIUM-CONTAINING ZEOLITE

Номер: US20200086306A1
Автор: BEBER Markus, Luetzel Hans-Juergen, Mueller Christian, Mueller Ulrich, Parvulescu Andrei-Nicolae, RIEDEL Dominic, Teles Joaquim Henrique, URBANCZYK Daniel, Wegerle Ulrike, WOERZ Nicolai Tonio
Принадлежит: BASF SE

A process for preparing a molding comprising zinc and a titanium-containing zeolitic material having framework type MWW, comprising (i) providing a molding comprising a titanium-containing zeolitic material having framework type MWW; (ii) preparing an aqueous suspension comprising a zinc source and the molding comprising a titanium-containing zeolitic material having framework type MWW prepared in (i); (iii) heating the aqueous suspension prepared in (ii) under autogenous pressure to a temperature of the liquid phase of the aqueous suspension in the range of from 100 to 200° C., obtaining an aqueous suspension comprising a molding comprising zinc and a titanium-containing zeolitic material having framework type MWW; (iv) separating the molding comprising zinc and a titanium-containing zeolitic material having framework type MWW from the liquid phase of the suspension obtained in (iii). 1. A process for preparing a molding comprising zinc and a titanium-containing zeolitic material having framework type MWW , comprising(i) providing a molding comprising a titanium-containing zeolitic material having framework type MWW;(ii) preparing an aqueous suspension comprising a zinc source and the molding comprising a titanium-containing zeolitic material having framework type MWW prepared in (i);(iii) heating the aqueous suspension prepared in (ii) under autogenous pressure to a temperature of the liquid phase of the aqueous suspension in the range of from 100 to 200° C., obtaining an aqueous suspension comprising a molding comprising zinc and a titanium-containing zeolitic material having framework type MWW; and(iv) separating the molding comprising zinc and a titanium-containing zeolitic material having framework type MWW from the liquid phase of the suspension obtained in (iii).2. The process of claim 1 , wherein the molding provided in (i) comprises the titanium-containing zeolitic material having framework type MWW and a binder claim 1 , wherein in the molding provided in ...

Подробнее
Номер записи: 90
19-03-2020 дата публикации

Method for producing optically active substance, optically active substance, method for producing chiral molecule, and chiral molecule

Номер: US20200087227A1
Автор: Katsuhiko Tomooka, Kazunobu Igawa
Принадлежит: Daicel Corp, Kyushu University NUC

Provided is a method for producing an optically active substance, the method including an asymmetric induction, wherein an asymmetry inducer is allowed to act on a chiral molecule having a half-life of enantiomeric excess of shorter than 10 hours, thereby increasing abundance of one enantiomer of the chiral molecule. According to this method, one enantiomer of a chiral molecule that is susceptible to racemization can be selectively and efficiently obtained.

Подробнее
Номер записи: 91
06-04-2017 дата публикации

MEMBRANE-SUPPORTED CATALYST REMOVAL IN THE EPOXIDATION OF CYCLIC UNSATURATED C12 COMPOUNDS, FOR EXAMPLE CYCLODODECENE (CDEN)

Номер: US20170095789A1
Автор: GLUTH Frederik, Kreis Peter, Meier Ralf, MICOINE Kevin, Priske Markus
Принадлежит: Evonik Industries AG

An apparatus for the epoxidation of a cyclic unsaturated Ccompound with hydrogen peroxide is provided. The apparatus includes a reactor for carrying out the reaction, wherein the walls of the reactor are at least partially furnished with a separation-active layer of crosslinked silicone acrylates and/or polydimethylsiloxane. 1. An apparatus for the epoxidation of a cyclic unsaturated Ccompound with hydrogen peroxide , said apparatus comprising:a reactor for carrying out the reaction,wherein the walls of the reactor are at least partially furnished with a separation-active layer of crosslinked silicone acrylates and/or polydimethylsiloxane.2. The apparatus according to which is suitable for carrying out simultaneously an epoxidation of a cyclic unsaturated Ccompound with hydrogen peroxide and a method according to .3. A method of synthesizing lactams using the epoxidized cyclic unsaturated compound comprising twelve carbon atoms obtained from the method according to . This application is a divisional application of U.S. application Ser. No. 14/714,985 filed May 18, 2015, the disclosure of which is incorporated herein by reference in its entirety. The parent application claims priority to German Application No. 102014209421.6, filed May 19, 2014, the disclosure of which is incorporated herein by reference in its entirety.Field of the InventionThe present invention relates to a method of removing homogeneous catalysts from organic reaction mixtures.Discussion of the BackgroundMethods of recovering catalysts from reaction mixtures are of fundamental importance for the economics of industrial chemical processes since without these methods it would be impossible to reuse often costly catalyst material. Yet, the recovery of catalysts presents those skilled in the art with particular challenges, particularly when homogeneous catalysis is concerned. Since in homogeneous catalysis the catalyst and the reactants are in the same phase it is usually impossible to separate the ...

Подробнее
Номер записи: 92
26-06-2014 дата публикации

EPOXIDATION OF GLYCEROL AND DERIVATIVES THEREFROM

Номер: US20140179936A1
Автор: Pienaar Andre, Stockenhuber Michael, Wilson Laurence Justin Pienaar
Принадлежит:

A method producing a surfactant from glycerol by converting glycerol, in a first step, to glycidol, polymerizing glycidol to an aliphatic alcohol and finally substituting a hydroxyl group with a substitute anion. 1. A method of producing a surfactant from glycerol which includes the steps of:(a) converting glycerol to glycidol;{'sub': n', '(2n+2), '(b) polymerizing glycidol to produce an aliphatic alcohol with a molecular formula CHOy, wherein n and y are numerical integers with n in the range 3 to 30 and y=n−1; and'}(c) substituting the hydroxyl moiety of the alcohol with a suitable head group.2. The method according to claim 1 , wherein the conversion of glycerol to glycidol includes the steps of dehydrating glycerol to acrolein (propenal) claim 1 , hydrogenating acrolein to allyl alcohol and epoxidizing allyl alcohol claim 1 , with hydrogen peroxide claim 1 , to glycidol.3. The method according to claim 2 , wherein a zeolite based catalyst is used in the dehydration step.4. The method according to claim 2 , wherein a hydrogenating catalyst claim 2 , including a support and at least one transition metal on the support claim 2 , is used in the hydrogenation step.5. The method according to claim 4 , wherein the at least one transition metal is cadmium claim 4 , silver or iron.6. The method according to claim 2 , wherein an epoxidizing catalyst claim 2 , being a titanium molecular sieve or a gold containing catalyst claim 2 , is used in the epoxidizing step.7. The method according to claim 1 , wherein polymerization claim 1 , in step (b) claim 1 , takes place by heating glycidol claim 1 , in an acidic medium claim 1 , for a predetermined period claim 1 , the length of which is dependent upon the number of carbon atoms (n) required in a tail group of the surfactant.8. The method according to claim 7 , wherein the polymerization step is initiated with boron trifluoride.9. The method according to claim 7 , wherein the tail group has a length in a range n=10 to 20.10. ...

Подробнее
Номер записи: 93
26-06-2014 дата публикации

METHOD FOR PRODUCING EPOXIDE

Номер: US20140179937A1
Автор: Hsieh Cheng-Fa, Hsu Yu-Chuan
Принадлежит: China Petrochemical Development Corporation, Taipei (Taiwan)

A method for producing an epoxide is provided. The method includes a step of performing a reaction of an olefine compound and an oxidant to form the epoxide by using a titanium-silicon molecular sieve as a catalyst, thereby increasing the conversion rate of the oxidant and the yield of the epoxide. 2. The method of claim 1 , wherein the titanium-silicon molecular sieve has a framework selected from the group consisting of MFI claim 1 , MEL claim 1 , BEA claim 1 , ZSM-48 claim 1 , MTW and MCM-41 structures.3. The method of claim 1 , wherein a molar ratio of the olefine compound to the oxidant is in a range from 1:100 to 100:1.4. The method of claim 1 , wherein the olefine compound is a C-Colefine compound.5. The method of claim 4 , wherein the olefine compound is a monoolefine compound.6. The method of claim 5 , wherein the monoolefine compound is one selected from the group consisting of ethylene claim 5 , propylene claim 5 , 1-butene claim 5 , 2-butene claim 5 , 1-pentene and cyclohexene.7. The method of claim 6 , wherein a molar ratio of the monoolefine compound to the oxidant is in a range from 1:10 to 10:1.8. The method of claim 1 , wherein the oxidant is hydrogen peroxide.9. The method of claim 1 , wherein the solvent is one selected from the group consisting of water claim 1 , C-Calcohols and a combination thereof.10. The method of claim 1 , wherein the solvent is methanol.11. The method of claim 1 , wherein the reaction is performed at a temperature in a range from 0 to 150° C.12. The method of claim 11 , wherein the reaction is performed at a temperature in a range from 25 to 120° C. The present invention relates to methods for producing epoxides, and more particularly, to a method for producing an epoxide using a titanium-silicon molecular sieve containing calcium, strontium or barium as a catalyst.Methods for producing epoxides include a chlorohydrin method, a co-oxidation method, a direct oxidation method, and the like. In the chlorohydrin method, a large ...

Подробнее
Номер записи: 94
26-06-2014 дата публикации

METHOD FOR PREPARING EPOXIDE

Номер: US20140179938A1
Автор: Hsieh Cheng-Fa, Hsu Yu-Chuan
Принадлежит: China Petrochemical Development Corporation, Taipei (Taiwan)

A method for producing an epoxide is disclosed. The method includes performing a reaction of an olefin compound and an oxidant by using a titanium-silicon molecular sieve as a catalyst, in the presence of a silicon oxide containing an alkaline earth metal as a coagent. The selectivity and yield of epoxide are increased by using a silicon oxide containing an alkaline metal as a coagent. 1. A method for preparing an epoxide , comprising the step of:performing a reaction of an olefin compound and an oxidant by using a titanium-silicon molecular sieve as a catalyst, in the presence of a silicon oxide containing an alkaline earth metal as a coagent.2. The method of claim 1 , wherein the coagent is added before the reaction claim 1 , during the reaction or before and during the reaction.3. The method of claim 1 , wherein an amount of the coagent is in a range of from 0.1 to 15 wt % based on an amount of the titanium-silicon molecular sieve.4. The method of claim 1 , wherein the silicon oxide is at least one selected from the group consisting of MgSiO claim 1 , MgSiO claim 1 , CaSiO claim 1 , SrSiOand BaSiO.6. The method of claim 1 , wherein a framework of the titanium-silicon molecular sieve is a structure of MFI MEL BEA ZSM-48 MTW or MCM-41.7. The method of claim 1 , wherein the titanium-silicon molecular sieve comprises a transition metal.8. The method of claim 1 , wherein a molar ratio of the olefin compound to the oxidant is in a range of from 1:100 to 100:1.9. The method of claim 1 , wherein the olefin compound is selected from Cto Colefin compounds.10. The method of claim 9 , wherein the olefin compound is a monoolefin compound.11. The method of claim 10 , wherein the single-olefin compound is ethylene claim 10 , propylene claim 10 , 1-butene claim 10 , 2-butene claim 10 , 1-pentene claim 10 , or cyclohexene.12. The method of claim 10 , wherein a molar ratio of the single-olefin compound to the oxidant is in a range of from 1:10 to 10:1.13. The method of claim 1 , ...

Подробнее
Номер записи: 95
16-04-2015 дата публикации

METHOD FOR SYNTHESIZING SAPROPTERIN DIHYDROCHLORIDE

Номер: US20150105555A1
Автор: Chen Chaoyong, GAGE James, HONG Hao, Liu Shuangyong, LU Jiangping, Zhou Yan
Принадлежит:

Disclosed is a method for synthesizing sapropterin dihydrochloride. The present disclosure reduces a synthesis route of the sapropterin dihydrochloride, introduces a chiral center in an asymmetric synthesis manner, in which a tetrahydrofuran solution containing a samarium catalyst is adopted as a catalyst, and obtains a target compound having a high antimer isomerism value by means of selective catalysis. The yield is improved, raw materials are cheap and readily available, and the cost is significantly reduced, hence providing an effective scheme for mass industrial production of the sapropterin dihydrochloride. 3. A method for synthesizing sapropterin dihydrochloride according to claim 1 , wherein in Step 2 claim 1 , the Lewis acid is aluminium chloride claim 1 , ferric chloride claim 1 , zinc chloride claim 1 , a boron trifluoride diethyletherate solution claim 1 , zinc bromide claim 1 , or lithium chloride claim 1 , preferably aluminium chloride claim 1 , the boron trifluoride diethyl etherate solution claim 1 , zinc bromide or lithium chloride claim 1 , and optimally the boron trifluoride diethyletherate solution or zinc bromide; the inorganic base is sodium bicarbonate claim 1 , sodium carbonate claim 1 , sodium hydroxide claim 1 , potassium hydroxide claim 1 , potassium carbonate or potassium bicarbonate claim 1 , preferably sodium bicarbonate claim 1 , sodium carbonate claim 1 , potassium carbonate or potassium bicarbonate claim 1 , optimally sodium carbonate; the ratio of the use amount of compound 2 to that of acetone is 1:1 to 3.5 claim 1 , preferably 1:1 to 3; the ratio of the use amount of compound 2 to that of the Lewis acid is 1:0.1 to 0.8 claim 1 , preferably 1:0.1 to 0.6; the ratio of the use amount of compound 2 to that of the inorganic base is 1:0.5 to 2.5 claim 1 , preferably 1:0.5 to 2.4. A method for synthesizing sapropterin dihydrochloride according to claim 1 , wherein in Step 3 claim 1 , the polar solvent is tetrahydrofuran claim 1 , ...

Подробнее
Номер записи: 96
26-03-2020 дата публикации

CATALYSTS AND RELATED METHODS FOR PHOTOCATALYTIC PRODUCTION OF H2O2 AND THERMOCATALYTIC REACTANT OXIDATION

Номер: US20200095126A1
Автор: EATON Todd R., Gray Kimberly A., Notestein Justin M.
Принадлежит:

Catalysts, catalytic systems and related synthetic methods for in situ production of HOand use thereof in reaction with oxidizable substrates. 134-. (canceled)36. The method of claim 35 , wherein the proton donor is an alcohol.37. The method of claim 35 , wherein the proton donor is a linear alkene.38. The method of claim 35 , wherein the transition metal moieties comprise V claim 35 , Ti claim 35 , Cr claim 35 , Mn claim 35 , Co claim 35 , Cu claim 35 , Zn claim 35 , Mo claim 35 , Nb claim 35 , Ta claim 35 , W claim 35 , Os claim 35 , Re claim 35 , Ir claim 35 , Sn claim 35 , or a combination thereof.39. The method of claim 35 , wherein the transition metal moieties comprise Ti.40. The method of claim 39 , wherein the alkene is propylene claim 39 , and the oxidation product is propylene oxide.41. The method of claim 36 , wherein the alcohol is isopropanol.42. The method of claim 41 , wherein the photocatalytic oxidation of the isopropanol produces acetone.43. The method of claim 42 , further comprising hydrogenating the acetone to regenerate the isopropanol.44. The method of claim 35 , wherein the oxidation reaction is an epoxidation reaction.45. The method of claim 44 , wherein the alkene is a cycloalkene.46. The method of claim 45 , wherein the cycloalkene is cyclooctene.47. The method of claim 45 , wherein the proton donor is an alcohol48. The method of claim 35 , wherein the irradiation is intermittent. The present application is a divisional of U.S. patent application Ser. No. 15/073,892 filed Mar. 18, 2016, the entire contents of which are hereby incorporated herein by reference; which claims priority to U.S. provisional patent application No. 62/136,073, filed on Mar. 20, 2015, the entire contents of which are hereby incorporated herein by reference.This invention was made with government support under DE-SC0006718 awarded by the Department of Energy. The government has certain rights in the invention.Approximately 3.5 million metric tons of hydrogen ...

Подробнее
Номер записи: 97
12-04-2018 дата публикации

PRODUCTION OF TERT-BUTYL HYDROPEROXIDE SOLUTION AND PROCESS TO FORM PRODUCTS THEREFROM

Номер: US20180099929A1
Автор: Chang Te, McDowell William H., Nguyen Ha H.
Принадлежит: Lyondell Chemical Technology, L.P.

A process for forming a concentrated solution, including distilling in a distillation zone comprised of 10 or more theoretical distillation stages, at a pressure of no greater than 300 mm Hg and a reflux ratio (D/L) of at least 1:1, an amount of an initial solution comprised of tert-butyl hydroperoxide (TBHP) in tert-butyl alcohol (TBA) having a TBHP concentration of up to 60 wt. % and a total impurity content greater than 0.01 wt. %, for a time and under distillation conditions to form a concentrated solution comprised of TBHP in TBA; and separating an overhead distillate from the distillation zone so that the concentrated solution thereafter has a TBHP concentration greater than 60 wt. %, a TBA concentration less than 40 wt. %, a water impurity content no greater than 0.1 wt. % and a total impurity content of no greater than 1 wt. %. Related epoxidation catalyst formation and epoxidation processes are also described. 1. A process comprisingdistilling in a distillation zone comprised of 10 or more theoretical distillation stages, at a pressure of no greater than 0.04 MPa and a reflux ratio (D/L) of at least 1:1, an amount of an initial solution comprised of tert-butyl hydroperoxide in tert-butyl alcohol, the initial solution having a tert-butyl hydroperoxide concentration of up to 60 wt. % and a total impurity content greater than 0.01 wt. %, for a time and under distillation conditions so that a concentrated solution comprised of tert-butyl hydroperoxide in tert-butyl alcohol is formed; andseparating an overhead distillate from the distillation zone so that the concentrated solution thereafter has a tert-butyl hydroperoxide concentration greater than 60 wt. %, a tert-butyl alcohol concentration less than 40 wt. %, a water impurity content no greater than 0.1 wt. % and a total impurity content of no greater than 1 wt. %.2. The process according to claim 1 , wherein the concentrated solution has a tert-butyl hydroperoxide concentration of at least 65 wt. %.3. The ...

Подробнее
Номер записи: 98
04-04-2019 дата публикации

PROCESS FOR THE EPOXIDATION OF PROPENE

Номер: US20190100501A1
Автор: BERNHARD Maik, BREDEMEYER Niels, Brendel Marc, JAEGER Bernd, KOLBE Bärbel, ULLRICH Norbert, WÖLL Wolfgang
Принадлежит:

During start-up of a continuous epoxidation of propene with hydrogen peroxide in a methanol solvent with a shaped titanium silicalite catalyst in a tube bundle reactor with a cooling jacket, cooling medium is fed at the rate for full load of the reactor with a constant entry temperature of from 20° C. to 50° C., methanol solvent is fed at a rate of from 50 to 100% for full load of the reactor, hydrogen peroxide is fed at a rate that starts with no more than 10% of the rate for full load and is increased continuously or stepwise to maintain a maximum temperature in the fixed bed of no more than 60° C. and a difference between the maximum temperature in the fixed bed and the cooling medium entry temperature of no more than 20° C., and propene is fed at a rate of from 20 to 100% of the rate for full load, increasing the feeding rate when the molar ratio of propene to hydrogen peroxide reaches the molar ratio for full load. 16-. (canceled)7. A process for the epoxidation of propene by continuously reacting propene with hydrogen peroxide in a methanol solvent and in the presence of a shaped titanium silicalite catalyst; wherein:a) the reaction is in a tube bundle reactor comprising a multitude of parallel reaction tubes and a cooling jacket enclosing the reaction tubes;b) the catalyst is arranged as a fixed bed in the reaction tubes;c) the molar ratio of propene to hydrogen peroxide is in the range of from 2.5:1 to 6:1 at full load of the reactor; i) cooling medium is fed to the cooling jacket at a constant rate for full load of the reactor, the entry temperature of the cooling medium being kept essentially constant at a value in the range of from 20° C. to 50° C.;', 'ii) methanol solvent is fed to the reaction tubes at a feeding rate of from 50 to 100% of a feeding rate for full load of the reactor;', 'iii) hydrogen peroxide is fed to the reaction tubes at a feeding rate that starts with no more than 10% of a feeding rate for full load of the reactor and is increased ...

Подробнее
Номер записи: 99
04-04-2019 дата публикации

2-(2,3-EPOXYPROPYL)PHENOL COMPOSITION AND METHOD OF MAKING

Номер: US20190100502A1
Автор: Denniston Mark R., Fisher Scott Michael, Ghanta Madhav
Принадлежит:

Disclosed herein is a method of making a 2-(2,3-epoxypropyl)phenol by reacting a 2-allylphenol with an oxidant in the presence of a catalyst. A 3-chromanol can be formed as a by-product. The method can be used to make 2-(2,3-epoxypropyl)-6-methylphenol. Transition metal catalysts and peroxide oxidants can be used. Also disclosed is a composition comprising 1 to 90 weight percent of a 2-(2,3-epoxypropylphenol, 5 to 90 weight percent of a 2-allylphenol, and 0 to 40 weight percent of a 3-chroman-ol, and in particular, a composition comprising 1 to 90 weight percent 2-(2,3-epoxypropyl)-6-methylphenol, 5 to 90 weight percent 2-allyl-6-methylphenol, and 0 to 40 weight percent 8-methyl-3-chromanol. 1. A method of making 2-(2 ,3-epoxypropyl)-6-methylphenol , comprising reacting 2-allyl-6-methylphenol with an oxidant in the presence of a catalyst.2. (canceled)3. The method of claim 1 , wherein the catalyst is a transition metal catalyst comprising molybdenum claim 1 , vanadium claim 1 , tungsten claim 1 , titanium claim 1 , manganese claim 1 , niobium claim 1 , or combination thereof.4. The method of claim 1 , wherein the catalyst comprises bis(acetylacetonato)dioxomolybdenum (VI) claim 1 , molybdenum dichloride dioxide claim 1 , tungstic acid claim 1 , tungsten hexacarbonyl claim 1 , or combination thereof.5. The method of claim 1 , wherein the oxidant comprises hydrogen peroxide claim 1 , an alkyl peroxide claim 1 , an alkyl hydroperoxide claim 1 , a ketone peroxide claim 1 , a diacyl peroxide claim 1 , a diperoxy ketal claim 1 , a peroxyester claim 1 , a peroxydicarbonate claim 1 , a peroxy acid claim 1 , a perbenzoic acid claim 1 , or combination thereof.6. The method of claim 1 , wherein the oxidant comprises m-chloroperbenzoic acid.7. The method of claim 1 , wherein the oxidant comprises hydrogen peroxide.8. The method of claim 1 , wherein reaction temperature is −10 to 50° C. claim 1 , and reaction time is 10 minutes to 6 hours.9. The method of claim 1 , wherein there ...

Подробнее
Номер записи: 100