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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 9. Отображено 9.
21-08-2013 дата публикации

High-efficiency gasoline octane value promoter

Номер: CN103254949A
Автор: Cheng Xitao, Zhang Cunshe, Bai Yan, Huang Fangfang, Shen Hanxi, Liu Xuejun
Принадлежит:

The invention discloses a high-efficiency gasoline octane value promoter. The high-efficiency gasoline octane value promoter consists of an active component, a cleaning agent, an antioxidant, synergist and cosolvent. When in preparation, the active component, the cleaning agent and the antioxidant are firstly added into a synthesis kettle to be stirred, and then the synergist and the cosolvent are added to completely dissolve the active component, the cleaning agent and the antioxidant and to be uniformly stirred to prepare a finished product. Production raw materials of the high-efficiency gasoline octane value promoter are easily available, the product is toxic-free, has no heavy metal and is environment-friendly, a good power economical performance can be realized, and the high-efficiency gasoline octane value promoter has the characteristics of metal passivation, oxidation resistance, gelling resistance, strong dispersion property and large increase amplitude of the octane value. The ...

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Номер записи: 1
27-03-2013 дата публикации

Catalyst for preparing p-tertbutyl benzaldehyde and preparation method

Номер: CN102989499A
Автор: Zhang Jinfeng, Zhang Cunshe, Zhou Kui, Shen Hanxi, Lan Wei
Принадлежит:

The invention relates to a catalyst for preparing p-tertbutyl benzaldehyde and a preparation method, wherein the preparation raw materials comprise a titanium source, cobalt salt, a mesoporous molecular sieve, triethylamine, a solvent, an alcohol impregnant and the like. According to the invention, the catalyst containing two active constituents, namely, titanium and cobalt, is prepared by taking the mesoporous molecular sieve as a carrier, and loading the active constituents by combining a grafting method with an impregnation method; the catalyst is high in selectivity and activity; the conversion rate of the reactants in a reaction for preparing p-tertbutyl benzaldehyde via catalytic oxidation is up to more than 45%, and the selectivity of the product is up to more than 90%.

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Номер записи: 2
04-07-2012 дата публикации

Catalyst preparation method for industrialized ester exchange synthetization diphenyl carbonate

Номер: CN102527431A
Автор: Zhang Jiyao, Yuan Dingxiong, Wang Sichen, Hu Guangfa, Shen Hanxi, Lan Wei, Zhang Cunshe, Zhang Jinfeng
Принадлежит:

The invention relates to a catalyst preparation method for industrialized ester exchange synthetization diphenyl carbonate, which comprises the steps of evenly mixing antimony metal oxide, lead metal oxide and zinc metal oxide, adding the mixed antimony metal oxide, lead metal oxide and zinc metal oxide into carbolic acid, heating the mixed materials to 150 DEG C to 220 DEG C, maintaining reaction temperature for 1 hour to 4 hours, continuously raising temperature of the mixed materials to be distilled continuously, and obtaining eutectic of carbolic acid antimony, carbolic acid lead and carbolic acid zinc after carbolic acid having not been reacted in the mixed materials is completely distilled out. The eutectic of carbolic acid antimony, carbolic acid lead and carbolic acid zinc is a catalyst for industrialized ester exchange synthetization diphenyl carbonate. The catalyst preparation method can effectively resolve the problems that catalyst in the prior art is low in reaction activity ...

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Номер записи: 3
04-07-2012 дата публикации

Method for preparing 3, 3-dimethyl butanol

Номер: CN102531837A
Автор: Zhang Jinfeng, Zhang Cunshe, Shen Hanxi, Zhou Kui, Cheng Xitao, Lan Wei
Принадлежит:

The invention relates to a method for preparing 3, 3-dimethyl butanol. Low-cost raw material 3,3- dimethyl butyric acid is adopted, alkali metal hydroboron and metal chloride salt are used to enable 3,3- dimethyl butyric acid to have a reduction reaction and generate 3,3- dimethyl butanol. Reactants form a reduction system according to a certain proportion and are subjected to a reduction reaction within a temperature range of 0 DEG C to solvent boiling point, and then products are separated and purified to obtain 3, 3-dimethyl butanol. Rate of production is 50% to 85%. The method for preparing 3, 3-dimethyl butanol is simple in process, low in production cost, high in product yield and suitable for large-scale industrial production.

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Номер записи: 4
18-07-2012 дата публикации

Method for preparing diamine polyether/ polydimethylsiloxane block silicon oil

Номер: CN102585251A
Автор: Wang Qianjin, Zhang Cunshe, Shen Hanxi, Wu Sufang, Cheng Xitao
Принадлежит:

The invention relates to a method for preparing diamine polyether/ polydimethylsiloxane block silicon oil. The method comprises the following steps of: adding a blocking agent and an organic silicon ring body into a three-opening flask, heating to the temperature of between 80 and 120 DEG C, adding a catalyst, reacting for a few hours, heating to decompose the catalyst, reducing pressure to remove substances with low melting points, and thus obtaining N-beta-aminoethyl-gamma-aminopropyl-terminated polydimethylsiloxane; adding the amino-terminated polysiloxane and epoxy-terminated polyether into the three-opening flask, reacting for 2 to 8 hours at the temperature of between 60 and 100 DEG C, and thus obtaining colorless to yellow viscous liquid, namely a diamine polyether/ polydimethylsiloxane linear block copolymer; and mixing the block copolymer, water and an organic solvent, then stirring and dispersing uniformly, and thus obtaining diamine polyether/ polydimethylsiloxane block copolymer ...

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Номер записи: 5
17-10-2012 дата публикации

Method and device for continuously rectifying and separating medium/low-temperature coal tar crude phenols

Номер: CN102731264A
Автор: Zhang Cunshe, Zhang Jinfeng, Shen Hanxi, Zhou Kui, Lan Wei, Cheng Xitao
Принадлежит:

The invention discloses a method and device for continuously rectifying and separating medium/low-temperature coal tar crude phenols. The method is implemented in a way that: crude phenols extracted from medium/low-temperature coal tar as raw materials are subjected to six-tower continuous rectification to effectively perform impurity removal and separation, thereby obtaining a mixed phenol product containing phenol and orthocresol of which the purities are higher than 99.5% and 2,6-dimethylphenol, 4-methylphenol, 3-methylphenol and 2-methylphenol of which the contents are higher than 99%, a mixed phenol product containing 2,4-dimethylphenol, 2,5-dimethylphenol, 4-methyl-2-ethylphenol and 6-methyl-2-ethylphenol of which the contents are higher than 96%, and the like. The device comprises a light component removal unit, a phenol-orthocresol unit, a meta-paracresol unit, a dimethyl phenol unit a trimethyl phenol unit, a decolorization unit and a vacuum system which are connected through pipelines ...

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Номер записи: 6
25-12-2013 дата публикации

Method for using double towers to ceaselessly compound high-purity methyl phenyl carbonic ester

Номер: CN103467283A
Автор: Shen Hanxi, Zhang Jinfeng, Wang Yan, Zhang Cunshe, Shi Ligang, Zhang Ying, Jing Yanni, Zhang Li'na, Lu Meixu
Принадлежит:

The invention provides a method for ceaselessly compounding high-purity methyl phenyl carbonic ester. The method includes the steps of using diphenyl carbonate and dimethyl carbonate as raw materials under the action of catalysts, carrying out synthesis and preliminary separation on the methyl phenyl carbonic ester through a reactive distillation tower, enabling crude products in the bottom of the tower to be subjected to separation and purification of a distillation and purification tower to obtain the methyl phenyl carbonic ester products with the purity of more than 99.9%. Through the method, the whole process flow is reasonable, and procedures are successive. The method has the advantages of low energy consumption, high product quality, no pollution and the like. The process is the high-efficiency and feasible continuous synthesis process of the methyl phenyl carbonic ester.

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Номер записи: 7
04-07-2012 дата публикации

Preparation method of methyl phenyl carbonic ester

Номер: CN102531908A
Автор: Zhang Jiyao, Yuan Dingxiong, Wang Sichen, Hu Guangfa, Shen Hanxi, Lan Wei, Zhang Cunshe, Zhang Jinfeng
Принадлежит:

The invention relates to a preparation method of methyl phenyl carbonic ester. Dimethyl carbonate and diphenyl carbonate serve as preparation raw materials. After diphenyl carbonate and a catalyst are placed in a rectification and purification reactor, the materials are slowly heated to 130-180 DEG C, dimethyl carbonate is dropwise added to the reactor slowly at the dropping speed of 0.5-15ml/ min, the temperature of reaction liquid is maintained for 1 hour, vacuum degree of the reactor is controlled to be 0.07-0.099MPa, the temperature of reaction liquid is slowly increased to 180-240 DEG C for rectification and purification, and the product of methyl phenyl carbonic ester is obtained when cut fractions at the temperature are collected. The preparation method of methyl phenyl carbonic ester can effectively resolve the problems that in the prior art, highly toxic raw materials are used, products obtained through reactions are toxic, product yield is not high, and a purification process ...

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Номер записи: 8
20-03-2013 дата публикации

Method for synthesizing cyclobutane-1,2,3,4-tetracarboxylic dianhydride

Номер: CN102977112A
Автор: Lan Wei, Zhang Cunshe, Shen Hanxi, Wu Sufang, Zhang Fan, Cheng Xitao, Zhang Jinfeng
Принадлежит:

The invention relates to a method for synthesizing cyclobutane-1,2,3,4-tetracarboxylic dianhydride. The method comprises the following steps of: adding diethyl carbonate and maleic anhydride in a photo-reactor, after controlling the reaction temperature, starting cold ultraviolet light of an LED (Light Emitting Diode), irradiating a reaction solution by using the ultraviolet light as an induction light source, synthesizing and reacting for a certain period of time, filtering and drying the reaction solution to obtain the cyclobutane-1,2,3,4-tetracarboxylic dianhydride. The cold ultraviolet light of the LED is used, therefore the method has the advantages of high light induction efficiency, easy control of reaction temperature, simple structure of reaction equipment, low energy consumption, less synthesis steps, high yield of product, and the like.

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Номер записи: 9