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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Применить Всего найдено 5. Отображено 5.
11-08-2023 дата публикации

Method for degumming ethanolamine solid fibrilia

Номер: CN116575131A
Автор: ZHAO TAO, XIA WENYING, LI BOYA, CAO ZHIHAO, YANG XIAOLI, JIANG WEI, BEN HAOXI, HAN GUANGTING
Принадлежит:

The invention belongs to the technical field of textile processing, and particularly relates to a method for degumming ethanolamine solid fibrilia. The method comprises the following steps: mixing impurity-removed fibrilia with an ethanolamine solvent, and heating for 5-7 hours; wherein the bath ratio of the fibrilia to the ethanolamine solvent is 1: (2.5-4); washing, filtering and drying the treated fibrilia to obtain degummed fibrilia, and recovering the filtered degumming waste liquid; the degumming waste liquid is subjected to vacuum rotary evaporation to remove ethanol and water, and the purified degumming waste liquid is used as a next-batch degumming solvent, so that the waste liquid is recycled. According to the method, the high-bath-ratio solid fibrilia degumming is carried out only by using ethanolamine as a solvent, so that the dosage of chemicals and the volume of reaction equipment can be greatly reduced, and the degumming cost is reduced; and on the other hand, the ethanol ...

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Номер записи: 1
23-06-2023 дата публикации

Molybdenum oxide loaded nickel-based catalyst as well as preparation method and application thereof

Номер: CN116273034A
Автор: YANG XIAOLI, JIN FAYI, BEN HAOXI, LI XINGYUN, JIANG WEI, ZHAO TAO
Принадлежит:

The invention belongs to the field of new energy and new materials, and particularly relates to a molybdenum oxide loaded nickel-based catalyst and a preparation method and application thereof. The catalyst adopts self-flaked molybdenum oxide as a carrier, the interface cooperation of nickel and molybdenum oxide is an active site, and the loading capacity of nickel is 2-10%. Due to interaction of strong metal carriers and increase of reduction temperature, the molybdenum oxide gradually covers the nickel nanoparticles, the prepared catalyst shows ultrahigh stability due to the wrapping effect of the coating on the nickel nanoparticles, and meanwhile, the added nickel-molybdenum oxide interface induces more electrons to be transferred from the nickel nanoparticles to the molybdenum oxide carrier, so that the stability of the catalyst is improved. The reverse water vapor reaction catalytic activity is influenced. The molybdenum oxide-loaded nickel-based catalyst prepared by the invention ...

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Номер записи: 2
05-05-2023 дата публикации

Titanium nitride supported ruthenium-based catalyst as well as preparation method and application thereof

Номер: CN116065163A
Автор: YANG XIAOLI, WANG XIN, ZHANG LIXUE, BEN HAOXI
Принадлежит:

The invention belongs to the field of new energy and new materials, and particularly relates to a titanium nitride loaded ruthenium-based catalyst as well as a preparation method and application thereof. According to the catalyst, self-made super-long titanium nitride nanorods are used as carriers, ruthenium is used as an active metal component, titanium nitride gradually covers ruthenium nanoparticles due to interaction of strong metal carriers and increase of reduction temperature, and the prepared catalyst shows ultrahigh stability due to the wrapping effect of a coating layer on the ruthenium nanoparticles; and meanwhile, the added ruthenium-titanium nitride interface induces more electrons to be transferred from ruthenium nanoparticles to a titanium nitride carrier, so that the catalytic activity of the hydrogen evolution reaction is influenced. The alkaline electrolytic water hydrogen evolution catalyst with high catalytic activity and reaction stability is developed, the preparation ...

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Номер записи: 3
12-05-2023 дата публикации

Chromium-modified indium oxide catalyst as well as preparation method and application thereof

Номер: CN116099526A
Автор: YANG XIAOLI, JIN FAYI, BEN HAOXI, LI XINGYUN, JIANG WEI, ZHAO TAO
Принадлежит:

The invention belongs to the field of new energy and new materials, and particularly relates to a chromium-modified indium oxide catalyst as well as a preparation method and application thereof. The raw materials of the catalyst comprise commercial indium nitrate hydrate and chromium nitrate hydrate, the high-dispersion chromium-modified indium oxide catalyst is prepared by adopting a coprecipitation method, the mass fraction of chromium in indium oxide is 0.5-10%, the oxygen vacancy content of the indium oxide-based catalyst is increased by the obtained catalyst, and the oxygen vacancy content of the indium oxide-based catalyst is reduced. The hydrogen dissociation capability of the indium oxide-based catalyst is enhanced, and the stability of the indium oxide-based catalyst is improved. The catalyst is applied to a reaction for preparing methanol through carbon dioxide hydrogenation, the catalytic activity is high, and especially when the mass fraction of chromium in indium oxide in the ...

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Номер записи: 4
09-06-2023 дата публикации

Molecular sieve template carbon-loaded high-dispersion metal catalyst as well as preparation method and application thereof

Номер: CN116240576A
Автор: YANG XIAOLI, WANG XIN, ZHANG LIXUE, BEN HAOXI
Принадлежит:

The invention belongs to the field of new energy and new materials, and particularly relates to a molecular sieve template carbon-loaded high-dispersion metal catalyst as well as a preparation method and application thereof. The catalyst comprises a metal active component and a carrier, wherein the carrier is molecular sieve template carbon with a three-dimensional porous structure; and the mass fraction of the metal active component in the catalyst is 0.1-8%. The preparation method comprises the following steps: depositing carbon into a molecular sieve by taking self-made LaY type zeolite as a hard template and ethylene gas as a carbon source; etching in a mixed acid solution to prepare the required zeolite template carbon; the method comprises the following steps: impregnating active metal into zeolite template carbon through an impregnation method, and reducing in a hydrogen-argon environment to obtain the molecular sieve template carbon supported metal catalyst. The catalyst has a uniform ...

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Номер записи: 5