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 6. Отображено 6.
28-07-2023 дата публикации

ReO2/TiO2/Re composite photocatalyst as well as preparation method and application thereof

Номер: CN116493005A
Автор: YUE XINZHENG, LIU YAN, LIU ZHONGYI, LI BAOJUN, CHEN JINGHUO, YI SHASHA
Принадлежит:

The invention belongs to the technical field of photocatalysis, and discloses a ReO2/TiO2/Re composite photocatalyst as well as a preparation method and application thereof. In the catalyst, TiO2 is in an anatase spherical nano flower shape, ReO2 particles and Re particles grow on the surface of TiO2, and the mass ratio of (ReO2 + Re) to TiO2 is (0.5-8): 100. The preparation method comprises the following steps: (1) adding ammonium perrhenate and anatase spherical nano flower-shaped TiO2 into a solvent, and uniformly dispersing; and (2) evaporating the turbid liquid obtained in the step (1) at 80-100 DEG C to remove the solvent, and roasting the residual solid product for 3-9 hours at 450-550 DEG C in the atmosphere of mixed gas of nitrogen and hydrogen or mixed gas of argon and hydrogen to obtain the catalyst. The catalyst is applied to hydrogen production through photocatalytic hydrolysis or propyl propionate production through a photocatalyst n-propyl alcohol. According to the invention ...

Подробнее
Номер записи: 1
04-07-2023 дата публикации

Electrocatalytic oxygen reduction catalyst and preparation method thereof

Номер: CN116387541A
Автор: YUE XINZHENG, LEI WEN, LIU ZHONGYI, YI SHASHA, CHEN JINGHUO, LI BAOJUN
Принадлежит:

The invention belongs to the field of electrocatalysts, and discloses an electrocatalytic oxygen reduction catalyst and a preparation method thereof. According to the catalyst, metal rhenium exists in a nitrogen-doped carbon skeleton in a monatomic form. The preparation method comprises the following steps: (1) adding 0.1-0.5 part by mass of ammonium perrhenate solid powder into 30-50 parts by volume of methanol, and adding 0.2-16 parts by mass of zinc nitrate hexahydrate to obtain a solution A; (2) adding 1-18 parts by mass of 2-methylimidazole solid powder into 50-80 parts by volume of methanol to obtain a solution B; (3) pouring the solution A into the solution B; (4) standing for layering, discarding supernate, washing, and drying in vacuum to obtain a precursor; (5) roasting the precursor for 2 to 5 hours under the condition of 600 to 1100 DEG C; (6) etching with an acid solution, washing to be neutral, filtering, and freeze-drying; and (7) roasting at 700-1100 DEG C for 2-4 hours ...

Подробнее
Номер записи: 2
04-03-2015 дата публикации

Preparation method of anatase crystal type nanometer strip-shaped titanium dioxide

Номер: CN104386741A
Автор: ZHANG ZONGTAO, YUE XINZHENG, WANG RUNWEI, JIANG SHANG, NI LING, YI SHASHA
Принадлежит:

The invention discloses a preparation method of anatase crystal type nanometer strip-shaped titanium dioxide and belongs to the technical field of preparation of nanometer materials. The preparation method comprises the following steps: uniformly grinding a mixture of titanium powder and alkali metal hydroxide and then crystallizing the obtained product; naturally cooling to room temperature, diluting, performing suction filtration and washing; afterwards adding concentrated sulfuric acid and deionized water into the obtained product, standing, performing suction filtration and washing again to make the solution be neutral; finally drying and baking to obtain anatase crystal type nanometer strip-shaped titanium dioxide. According to the preparation method disclosed by the invention, the size of a reaction unit can be greatly reduced to be only 1/20-1/30 of the size of the reaction unit which adopts a hydrothermal method; no solvent is added for transferring heat and mass so that a great ...

Подробнее
Номер записи: 3
14-07-2023 дата публикации

Low-temperature-resistant epoxy resin castable as well as preparation method and use method thereof

Номер: CN116426091A
Автор: YUE XINZHENG, LIU ZHONGYI, ZHANG PEI, YI SHASHA, LI BAOJUN
Принадлежит:

The invention belongs to the field of epoxy resin castable, and discloses a low-temperature-resistant epoxy resin castable as well as a preparation method and a use method thereof. The castable comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: (0.6-1); the component A comprises the following components in parts by mass: 40-45 parts of epoxy resin, 5-7 parts of a diluent and 40-50 parts of filler; the component B comprises the following components in parts by mass: 25-35 parts of a curing agent, 5-15 parts of a low-temperature modifier, 5-15 parts of a plasticizer, 0.2-0.3 part of an accelerant and 40-50 parts of filler; the low-temperature modifier is liquid isoprene rubber. According to the invention, the liquid isoprene rubber is added into the castable as a low-temperature modifier, so that the low-temperature impact resistance of the cured epoxy resin can be greatly improved, cracking and stress concentration are not easy to ...

Подробнее
Номер записи: 4
08-08-2023 дата публикации

Catalyst for hydrogen production through photocatalytic decomposition of water and preparation method thereof

Номер: CN116550338A
Автор: YUE XINZHENG, LI CHUANQI, LIU ZHONGYI, CHEN JINGHUO, YI SHASHA, LI BAOJUN
Принадлежит:

The invention belongs to the field of hydrogen production through photocatalytic water decomposition, and discloses a catalyst for hydrogen production through photocatalytic water decomposition and a preparation method of the catalyst. The catalyst is formed by compounding ZnIn2S4 and Nb2O5 rich in oxygen vacancies, ZnIn2S4 nanosheets uniformly grow on the surface of a Nb2O5 nanoplate rich in oxygen vacancies, and the mass percent of ZnIn2S4 in the catalyst is controlled to be 30-90%. The preparation method comprises the following steps: (1) preparing Nb2O5 nanosheet powder rich in oxygen vacancies; (2) preparing a raw material solution for preparing the ZnIn2S4 nanosheet; (3) weighing the Nb2O5 nanosheet powder rich in oxygen vacancies obtained in the step (1) according to the mass ratio of the Nb2O5 rich in oxygen vacancies to ZnIn2S4, adding the Nb2O5 nanosheet powder rich in oxygen vacancies to the raw material solution obtained in the step (2), uniformly dispersing, and reacting at ...

Подробнее
Номер записи: 5
11-08-2023 дата публикации

Ti3C2/g-C3N4 composite photocatalyst as well as preparation method and application thereof

Номер: CN116571266A
Автор: YUE XINZHENG, YI WENJING, LIU ZHONGYI, CHEN JINGHUO, LI BAOJUN, YI SHASHA
Принадлежит:

The invention belongs to the technical field of photocatalysis, and discloses a Ti3C2/g-C3N4 composite photocatalyst as well as a preparation method and application thereof. According to the composite photocatalyst, a single-layer or few-layer Ti3C2 nanosheet is used as a substrate, g-C3N4 grows on the Ti3C2 nanosheet, and a 2D/2D heterostructure is formed. The preparation method comprises the following steps: (1) dispersing Ti3C2 powder and a nitrogen-rich precursor in water, and ultrasonically dispersing uniformly under the protection of inert gas; and (2) freeze-drying the mixed solution obtained in the step (1), grinding, and calcining at 450-600 DEG C for 1-4 hours to obtain the Ti3C2/g-C3N4 composite photocatalyst, wherein the gas atmosphere for calcining is nitrogen-hydrogen mixed gas or argon-hydrogen mixed gas. The Ti3C2/g-C3N4 composite photocatalyst is applied to preparation of 2, 5-diformyl furan through photocatalysis of selective oxidation of 5-hydroxymethylfurfural and synergic ...

Подробнее
Номер записи: 6