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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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Применить Всего найдено 3. Отображено 3.
21-07-2023 дата публикации

Catalyst for preparing alcohol ether carboxylic acid as well as preparation method and application of catalyst

Номер: CN116459832A
Автор: ZHANG LU, JIANG YAJIE, GENG TAO, WANG YAKUI, JU HONGBIN, LI JUN, WANG ZHIFEI
Принадлежит:

The invention belongs to the technical field of catalysts. The invention provides a catalyst for preparing alcohol ether carboxylic acid and a preparation method and application thereof.The preparation method comprises the steps that activated carbon and cerium dioxide are mixed and then subjected to vacuum drying, a carrier is obtained, an aqueous solution containing chloroplatinic acid and cerium chloride heptahydrate is dropwise added into the aqueous solution of the carrier, loading is conducted, and a mixed solution is obtained; and mixing the mixed solution with an aqueous solution of sodium borohydride, and carrying out a reduction reaction to obtain the catalyst for preparing alcohol ether carboxylic acid. The catalyst prepared by the invention takes activated carbon and cerium dioxide as carriers, and noble metal platinum and rare earth element cerium are introduced. The catalyst provided by the invention has universality, and is suitable for straight-chain alcohol ether, branched-chain ...

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Номер записи: 1
25-07-2023 дата публикации

Chlorine-free organic counter-ion quaternary ammonium salt gemini surfactant as well as preparation method and application thereof

Номер: CN116478704A
Автор: JIANG YAJIE, HOU SHIDA, WANG YAKUI, GENG TAO, JU HONGBIN, LI JUN, WANG ZHIFEI, ZHANG LU
Принадлежит:

The invention belongs to the technical field of surfactants, and discloses a chlorine-free organic counter-ion quaternary ammonium salt gemini surfactant as well as a preparation method and application thereof. The chlorine-free organic counter-ion quaternary ammonium salt gemini surfactant disclosed by the invention is obtained by adding a certain amount of alkyl diamine compounds acidified by organic acid into C1-C18 alkyl glycidyl ether and carrying out quaternization reaction. The chlorine-free organic counterion quaternary ammonium salt gemini surfactant contains two organic counterions and two hydroxyl groups, the synthesis process flow is simple, the conditions are mild, toxic and harmful by-products are not generated, and corrosion damage of halogen ions to equipment and environmental pollution in the preparation process can be avoided.

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Номер записи: 2
18-04-2023 дата публикации

Long-chain alkyl diisopropanolamine gemini quaternary ammonium salt derivative as well as preparation method and application thereof

Номер: CN115974706A
Автор: WANG ZHIFEI, JIANG YAJIE, WANG YAKUI, LI JUN, ZHANG LU, GENG TAO, JU HONGBIN, TAI XIUMEI
Принадлежит:

The invention provides a long-chain alkyl diisopropanolamine gemini quaternary ammonium salt derivative as well as a preparation method and application thereof, and belongs to the technical field of chemical synthesis. The preparation method comprises the following steps: taking long-chain alkylamine and epoxypropane as raw materials, reacting under the action of a catalyst to prepare a long-chain alkyl diisopropanolamine intermediate, mixing the prepared long-chain alkyl diisopropanolamine intermediate, bis (2-bromoethyl) ether and a basic catalyst in a solvent, and reacting to obtain the long-chain alkyl diisopropanolamine gemini quaternary ammonium salt derivative. Wherein the long-chain alkyl R is one of CnH2n + 1 or CnH2n + 1-O-CH2CH2CH2, n is more than or equal to 6 and less than or equal to 18, and n is an even number. The long-chain alkyl diisopropanolamine gemini quaternary ammonium salt derivative prepared by the invention is a novel cationic surfactant, and has strong application ...

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Номер записи: 3