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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 6. Отображено 6.
06-06-2023 дата публикации

Iridium catalyst for hydrogen production from formic acid as well as preparation method and application of iridium catalyst

Номер: CN116212964A
Автор: YIN CHENGKAI, GUO JIAN, QI TIANGUI, ZHOU WEIBIN, LI XIAOBIN, PENG ZHIHONG, LIU GUIHUA, ZHOU QIUSHENG, WANG YILIN, SHEN LEITING
Принадлежит:

The invention belongs to the field of catalysts, and discloses an iridium catalyst for hydrogen production from formic acid as well as a preparation method and application thereof. The iridium catalyst is a metal compound with a structure as shown in a formula I, and R is methyl or phenyl. The preparation method comprises the following steps: S1, reacting dichloropentamethylcyclopentadienyl iridium dimer with silver salt of which the water solubility is greater than that of silver chloride in deionized water to obtain a precursor [Cp * Ir (H2O) 3] SO4 (Cp * = pentamethylcyclopentadienyl); and S2, carrying out a reaction on the precursor and a ligand N-(methylsulfonyl)-2-pyridinecarboxamide or N-(phenylsulfonyl)-2-pyridinecarboxamide in water, and after the reaction is completed, removing the solvent water to obtain the iridium catalyst. In the process of catalyzing formic acid to produce hydrogen, an alkaline substance can be further added to adjust the pH value of the system and improve ...

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Номер записи: 1
26-05-2023 дата публикации

Preparation method of ammonium paratungstate

Номер: CN116161699A
Автор: SHEN LEITING, LI XIAOBIN, ZHANG LIMING, ZHOU QIUSHENG, QI TIANGUI, LIU GUIHUA, PENG ZHIHONG, WANG YILIN
Принадлежит:

The invention belongs to the technical field of tungsten smelting, and particularly relates to a preparation method of ammonium paratungstate. Adding an ammonia water solution and/or an ammonium salt solution into the ammonium metatungstate solution, and adjusting the pH value to 6-9; in the subsequent crystallization process, ammonium paratungstate with different morphologies and particle sizes is obtained by controlling the use of crystallization equipment and the temperature and the stirring speed in the crystallization process. The crystallization process is adjusted and controlled through a simple process, the consumption of auxiliary materials is low, and the energy consumption is low.

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Номер записи: 2
18-04-2023 дата публикации

Desiliconizing agent and application thereof in Bayer process crude liquid

Номер: CN115974118A
Автор: PENG ZHIHONG, DAI XIAOLONG, WANG YILIN, QI TIANGUI, LIU GUIHUA, LI XIAOBIN, ZHOU QIUSHENG, SHEN LEITING
Принадлежит:

The invention belongs to the technical field of hydrometallurgy, and discloses a desiliconization agent and application thereof in desiliconization of Bayer process crude liquid. And adding at least one of opal, kaolinite and sodium silicate into the sodium aluminate solution A, adding at least one of NaCl, Na2SO4 and Na2CO3, reacting for a period of time, and carrying out solid-liquid separation on the reaction slurry to obtain the synthetic sodium desiliconization agent. Lime milk is added into the sodium aluminate solution B for a reaction, reaction slurry is subjected to solid-liquid separation, and the synthetic calcium desiliconization agent is obtained. The method comprises the following steps: firstly, adding a synthetic sodium desiliconization agent into the Bayer process crude liquid, carrying out first-stage desiliconization, after the first-stage desiliconization is completed, carrying out solid-liquid separation, adding a synthetic calcium desiliconization agent into the obtained ...

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Номер записи: 3
14-04-2016 дата публикации

METALLURGICAL PROCESS FOR TUNGSTEN MINERAL RAW MATERIAL WITH NO POLLUTANT DISCHARGE IN ENTIRE PROCESS

Номер: WO2016054952A1
Автор: LI, Xiaobin, CUI, Yuanfa, ZHOU, Qiusheng, LI, Jianpu, QI, Tiangui, XU, Shuang, LIU, Guihua, LIN, Guorong, PENG, Zhihong, LI, Jihong, XU, Xiangming, TONG, Xiaoyi
Принадлежит:

A metallurgical process for a tungsten mineral raw material (100), comprising: employing a weak base leaching agent conducive to forming a local process circulation, the leaching agent generating two or more gases in an evaporative crystallization process, each kind of gas being able to participate again in the synthesis of the leaching agent, and a crystallized separation scrubbing solution being similarly recycled as a leaching agent; and employing a transformation ingredient, the transformation ingredient having a chemical reaction with the tungsten mineral raw material (100) to enable tungsten element to be comprised in an intermediate easily dissolved by the leaching agent, and a leaching residue also comprising an ingredient element, such that at least a part of the leaching residue can be recycled as the ingredient. The process comprises a plurality of closed cycles, and produces no wastewater discharge in the entire process.

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Номер записи: 4
07-07-2023 дата публикации

Method for extracting vanadium from Bayer process seed precipitation mother liquor crystallization vanadium slag

Номер: CN116397112A
Автор: ZHOU QIUSHENG, ZHANG CHANGDA, LI XIAOBIN, QI TIANGUI, WANG YILIN, PENG ZHIHONG, LIU GUIHUA, SHEN LEITING
Принадлежит:

The invention discloses a method for separating and extracting vanadium from Bayer process seed precipitation mother liquor crystallization vanadium slag, which comprises the following steps: dissolving vanadium slag in water, adding sodium hydroxide and a vanadium precipitation agent to selectively precipitate vanadium, and filtering to obtain vanadium precipitation post-liquid and vanadium-enriched slag; the vanadium precipitation agent is barium salt; carrying out cooling crystallization or precipitation method impurity removal on the vanadium-precipitated liquid, filtering, and returning the filtrate to the vanadium slag dissolving process; the vanadium-enriched slag is leached through a leaching agent or transformed through an acid solution, then leached through the leaching agent and filtered, and leached slag and vanadium-enriched liquid are obtained; leached residues are returned to be used as a vanadium precipitation agent; and the vanadium enrichment liquid is subjected to a vanadium ...

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Номер записи: 5
12-05-2023 дата публикации

Process for selectively extracting titanium from red mud

Номер: CN116103516A
Автор: WANG YILIN, LI XIAOBIN, ZHOU QIUSHENG, ZHANG YULUN, QI TIANGUI, PENG ZHIHONG, LIU GUIHUA, SHEN LEITING
Принадлежит:

The invention belongs to the technical field of hydrometallurgy, and discloses a process for selectively extracting titanium from red mud. The method comprises the following steps: dissolving gibbsite and/or boehmite bauxite by using a Bayer process, washing the obtained red mud, and activating by using dilute acid or an ammonium salt solution to obtain high-activity red mud; ammonium salt and/or an ammonia water solution and hydrogen peroxide are/is added into the high-activity red mud, slurry is prepared, the pH value of the slurry is controlled to be 8-14, liquid-solid separation is carried out after a reaction is carried out for a period of time, and a titanium-rich solution and the red mud after titanium extraction are obtained. And the titanium-rich solution can be further treated to obtain titanium dioxide or titanium dioxide fiber materials, so that the utilization additional value of the red mud is improved. According to the method, titanium is selectively leached from the red ...

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Номер записи: 6