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Catalyst for synthesizing methanol by taking multi-carbon sources in metallurgical fume as raw materials and preparation method of catalyst

A technology for synthesizing methanol and catalysts, which is applied in the direction of catalyst activation/preparation, preparation of organic compounds, chemical instruments and methods, etc. It can solve the problems of many by-products, low selectivity of methanol, and low conversion rate of catalysts, etc.

Inactive Publication Date: 2012-07-18
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to CO 2 The chemical inertness of CO and the factors such as coexistence and competitive adsorption with CO make CO 2 It is difficult to activate and reduce, and the catalysts prepared by traditional methods have the disadvantages of low conversion rate, many by-products and low methanol selectivity.

Method used

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  • Catalyst for synthesizing methanol by taking multi-carbon sources in metallurgical fume as raw materials and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Cu:Zn:Al=5:4.5:0.5 in molar ratio, Ce:Zr molar ratio is 1.0:3.0, (CuO+ZnO+Al 2 o 3 ) and (CeO 2 +ZrO 2 ) with a mass ratio of 99.4:0.6, weigh Cu(NO 3 ) 2 ·3H 2 O, Zn(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 9H 2 O, Zr(NO 3 ) 4 ·5H 2 O, Ce (NO 3 ) 3 ·6H 2 O was dissolved in deionized water to obtain a mixture with a concentration of 0.1 mol / L;

[0024] (2) At a reaction temperature of 70°C, titrate the above solution into Na with a concentration of 0.1mol / L 2 CO 3 In the solution, the pH of the solution was adjusted to be 7. After the titration was completed, the mixed solution was maintained at the reaction temperature to continue stirring for 60 minutes, then left to stand at the reaction temperature for 120 minutes to age the solution, and a solid precipitate was obtained after filtration;

[0025](3) Put the sediment into a polytetrafluoroethylene substrate reactor with a filling rate of 10%, and conduct a hydrothermal reaction under microwave conditions....

Embodiment 2

[0027] (1) Molar ratio Cu: Zn: Al=5.5:3:1.5, Ce: Zr molar ratio is 2.0:1.0, (CuO+ZnO+Al 2 o 3 ) and (CeO 2 +ZrO 2 ) with a mass ratio of 98.0:2.0, weigh Cu(NO 3 ) 2 ·3H 2 O, Zn(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 9H 2 O, Zr(NO 3 ) 4 ·5H 2 O, Ce (NO 3 ) 3 ·6H 2 O was dissolved in deionized water to obtain a mixture with a concentration of 0.8 mol / L;

[0028] (2) At a reaction temperature of 50°C, titrate the above solution into Na with a concentration of 1.0mol / L 2 CO 3 In the solution, the pH of the solution was adjusted to be 7.5. After the titration was completed, the mixed solution was maintained at the reaction temperature to continue stirring for 30 minutes, then left to stand at the reaction temperature for 100 minutes to age the solution, and a solid precipitate was obtained after filtration;

[0029] (3) Put the precipitate into a polytetrafluoroethylene substrate reactor with a filling rate of 30%, and conduct a hydrothermal reaction under microwave condi...

Embodiment 3

[0031] (1) According to the molar ratio Cu: Zn: Al=6.5: 3.0, Ce: Zr molar ratio is 3.0: 2.0, (CuO+ZnO+Al 2 o 3 ) and (CeO 2 +ZrO 2 ) with a mass ratio of 9:1, weigh Cu(NO 3 ) 2 ·3H 2 O, Zn(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 9H 2 O, Zr(NO 3 ) 4 ·5H 2 O, Ce (NO 3 ) 3 ·6H 2 O was dissolved in deionized water to obtain a mixture with a concentration of 1mol / L;

[0032] (2) At a reaction temperature of 80°C, titrate the above solution into Na with a concentration of 1.5mol / L 2 CO 3 In the solution, the pH of the solution was adjusted to be 8. After the titration was completed, the mixed solution was maintained at the reaction temperature to continue stirring for 40 minutes, then left to stand at the reaction temperature for 30 minutes to age the solution, and a solid precipitate was obtained after filtration;

[0033] (3) Put the precipitate into a polytetrafluoroethylene substrate reactor with a filling rate of 20%, and conduct a hydrothermal reaction under microwave...

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Abstract

The invention belongs to the technical field of chemical catalysis, and relates to a catalyst for synthesizing methanol by taking multi-carbon sources in metallurgical fume as raw materials and a preparation method of the catalyst. The active components of the catalyst are Cu, ZnO, Al2O3, CeO2 and ZrO2, the mole ratio of the composition of the catalyst is Cu:Zn:Al=m:n:l, wherein m is equal to 5.0-6.5, n is equal to 3.0-4.5, l is equal to 10 minus m minus n, the mole ratio of Ce / Zr ranges from 1.0:3.0-3.0:1.0, and the mass ratio of (Cuo+ZnO+Al2O3) to (CeO2+ZrO2) is x:(1-x), and x=90.0%-99.9%. Compared with the Cu / Zn / Al catalyst, the catalyst has the advantages that the carbon conversion ratio is high, the selectivity of the methanol in a product is high and the reaction can be conducted under low temperature and low pressure in the reaction that the multi-carbon sources in the metallurgical fume are taken as raw materials for synthesizing the methanol.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysis, and relates to a catalyst for synthesizing methanol by using multiple carbon sources in metallurgical flue gas as raw materials and a preparation method thereof. technical background [0002] Methanol is an extremely important chemical raw material, widely used in organic synthesis, medicine, fuel, dyestuff, its output is second only to synthetic ammonia and ethylene. Methanol is not only the basic substance of C1 chemical industry, hundreds of chemical products can be produced from methanol, but also an important potential alternative clean fuel. With the change of energy structure, methanol will play a pivotal role in the future society. [0003] From the research situation at home and abroad, the use of CO, CO 2 The conversion of methanol alone is the main research direction of industrial waste gas recycling. In many cases, however, CO 2 CO and CO coexist in gas sources, such as...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J37/32C07C31/04C07C29/154
CPCY02P20/52
Inventor 高文桂张明宇王华刘文艳张逢杰
Owner KUNMING UNIV OF SCI & TECH
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