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Method for reducing inorganic compound by water as hydrogen source or by molten alkali and use thereof

A technology for hydrogen sources and uses, applied in the preparation of organic compounds, the preparation of amino compounds, chemical instruments and methods, etc., can solve problems such as air pollution, governance methods without market economic rules, etc.

Inactive Publication Date: 2015-09-02
李坚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0049] The flue gas emitted by coal combustion enterprises such as thermal power plants is the chief culprit of air pollution, and the main source of pollution is CO 2 , SO 2 , NO 2 , but so far there is no treatment method that conforms to the rules of the market economy. Example 14 has laid the foundation for enterprises to fundamentally and thoroughly control the flue gas emitted by coal combustion while greatly improving economic benefits.

Method used

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  • Method for reducing inorganic compound by water as hydrogen source or by molten alkali and use thereof
  • Method for reducing inorganic compound by water as hydrogen source or by molten alkali and use thereof
  • Method for reducing inorganic compound by water as hydrogen source or by molten alkali and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] Put 100 grams of 30-48% potassium hydroxide or sodium hydroxide or lithium hydroxide or calcium hydroxide aqueous solution or water suspension; or drop 100 grams of 25% tetraalkylammonium hydroxide aqueous solution in the reactor, and put 10-20 grams of zinc powder or Raney nickel or reduced iron powder, start stirring, control the temperature below 40°C, slowly add CO 2Or carbonate or formate or formaldehyde 5-10 grams each, after stirring and reacting for 1-2 hours, gradually raise the temperature to 90°C, control the temperature at 90-220°C, continue stirring and reacting for 14-24 hours to generate glycolic acid and acetic acid Mixed alcohol of diol+ethanol+methanol, CO 2 Or the conversion rate of carbonate or formate or formaldehyde is more than 95%, and the total yield of glycolic acid and mixed alcohol is more than 90%.

[0065] Then filter out the metal solids under anaerobic conditions and store them in a concentrated alkali solution for the next batch of use....

Embodiment 2

[0067] Put 100 grams of 25% tetraethylammonium hydroxide aqueous solution and 5 to 20 grams of magnesium powder or Raney nickel into the reactor, start stirring, control the temperature at -10 to 140°C, and slowly add 5 to 10 grams of CO 2 Or potassium carbonate or potassium formate, stirred for 4 to 48 hours, then slowly added with CO 2 Or potassium carbonate or potassium formate equimolar calcium hydroxide, down to room temperature, filter out solid matter, separate out metallic magnesium solid matter simultaneously, generate calcium glycolate solid, conversion rate is more than 95%, the yield of calcium glycolate is More than 85%; then use sulfuric acid to neutralize calcium glycolate, and concentrate to obtain 50% glycolic acid aqueous solution.

Embodiment 3

[0069] Put 100 grams of 30-48% potassium hydroxide or sodium hydroxide or lithium hydroxide aqueous solution, or put 100 grams of 25% tetramethylammonium hydroxide aqueous solution, and add 10-20 grams of zinc powder or Raney nickel at the same time, start Stir, control the temperature at 10-80°C, control the pressure at 1-4MPa, slowly add 20-40 grams of ammonium bicarbonate; or slowly add 10-20 grams of CO 2 and 20-40 grams of ammonia gas, heat preservation reaction for 4-48 hours to generate glycine, the conversion rate is 99%, and the yield of glycine is more than 80%.

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PUM

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Abstract

The invention relates to a method for reducing an inorganic compound by water as a hydrogen source to synthesize an organic compound or hydride and a use thereof. The related hydrogen acceptors comprise inorganic or organic compounds such as carbon dioxide, carbonate, acetic acid and urea containing C=O groups, and also comprise inorganic compounds such as nitrogen dioxide, sulfur dioxide, sulfate and nitrate. The method utilizing water as a hydrogen source can realize high efficiency and low cost conversion of the inorganic compounds containing C=O groups into alcohol organics or conversion of inorganic compounds containing S=O and N=O groups into corresponding hydrides. The invention also relates to a method for reducing carbon dioxide, sulfur dioxide or nitrogen dioxide into carbon simple substance, sulfur simple substance or nitrogen by molten alkali catalysis and a use thereof and also relates to a method for reducing a metal hydroxide into a corresponding metal simple substance by molten alkali catalysis and a use thereof.

Description

1. Technical field [0001] The invention relates to a method and application for reducing inorganic compounds to synthesize organic matter or hydride by using water as a hydrogen source, that is, adopting a carbonyl reduction type hydrogen transfer reaction using water as a hydrogen donor. The so-called hydrogen transfer reaction is the reduction of inorganic compounds in the reduction reaction mode of hydrogenation or hydrogenolysis of hydrogen acceptors using hydrogen donors as hydrogen sources in the presence of catalysts. The hydrogen acceptors involved in the present invention are inorganic or organic compounds containing C=O groups such as carbon dioxide, carbonate, acetic acid, urea, etc. It becomes a kind of carbonyl compound in a broad sense, so the hydrogen acceptor involved in the present invention also includes inorganic compounds such as nitrogen dioxide, sulfur dioxide, sulfate and nitrate. By adopting the method of the present invention, using water as a hydroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C59/06C07C51/15C07C31/20C07C31/08C07C31/04C07C29/14C07C29/147C07C29/159C07C229/08C07C227/12C07C211/10C07C209/00C01B31/02C01B31/18C01B21/02C01B21/24C01B17/04C01C1/02C01B17/16C01B21/16C22B5/00C01B32/40
Inventor 李坚
Owner 李坚
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