Graphene oxide promoted copper-based methanol synthesis catalyst and preparation method thereof

A technology for methanol synthesis and catalyst is applied in the field of copper-based methanol synthesis catalyst and its preparation, and can solve problems such as difficult activation

Inactive Publication Date: 2016-07-20
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the inertness of carbon dioxide, it is difficult to be activated. Therefore, the key to this research is to find a suitable catalyst to improve the conversion rate of carbon dioxide and the yield of methanol.
[0003] At present, the catalysts used in the hydrogenation of carbon dioxide to synthesize methanol are mainly Cu / ZnO / Al in industry. 2 o 3 catalyst, but due to the Al 2 o 3 Hydrophilicity and Cu / ZnO / Al 2 o 3 The agglomeration and growth of catalyst particles during the catalyst reduction process inhibits Cu / ZnO / Al 2 o 3 Catalytic Effect of Catalysts on Carbon Dioxide Hydrogenation to Methanol

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 0.122 grams of graphene oxide were ultrasonically dispersed in 80 mL of deionized water to obtain a graphene oxide solution; 2.174 grams of Cu(NO 3 ) 2 ·3H 2 O, 1.338 g Zn(NO 3 ) 2 ·6H 2 O and 0.562 g Al(NO 3 ) 3 9H 2 O (purity are all AR grade) mixed together, add 50mL deionized water to make metal salt solution, AR grade anhydrous Na 2 CO 3 Add to deionized water to make 1M Na 2 CO 3 solution; the metal salt solution is added dropwise in the graphene oxide solution to obtain a mixed solution of the metal salt and graphene oxide; the metal salt solution and the graphene oxide mixed solution are placed in an oil bath and kept at a constant temperature of 343K. Na 2 CO 3 Add the solution dropwise into the mixed solution until the pH of the mixed solution reaches 7-8. After stirring continuously for 5 hours, stop heating and continue stirring for 12 hours. Pour the feed liquid into a vacuum filtration device for suction filtration, and wash it with deionized w...

Embodiment 2

[0019] 0.052 grams of graphene oxide was ultrasonically dispersed in 80 mL of deionized water to prepare a graphene oxide solution; 2.179 grams of Cu(NO 3 ) 2 ·3H 2 O, 1.342 g Zn(NO 3 ) 2 ·6H 2 O and 0.562 g Al(NO 3 ) 3 9H 2 O (purity are all AR grade) mixed together, add 50mL deionized water to make metal salt solution, AR grade anhydrous Na 2 CO 3 Add to deionized water to make 1M Na 2 CO 3 solution; the metal salt solution is added dropwise in the graphene oxide solution to obtain a mixed solution of the metal salt and graphene oxide; the metal salt solution and the graphene oxide mixed solution are placed in an oil bath and kept at a constant temperature of 343K. Na 2 CO 3 Add the solution dropwise into the mixed solution until the pH of the mixed solution reaches 7-8. After stirring continuously for 5 hours, stop heating and continue stirring for 12 hours. Pour the feed liquid into a vacuum filtration device for suction filtration, and wash it with deionized w...

Embodiment 3

[0021] 0.195 grams of graphene oxide were ultrasonically dispersed in 80 mL of deionized water to obtain a graphene oxide solution; 2.182 grams of Cu(NO 3 ) 2 ·3H 2 O, 1.342 g Zn(NO 3 ) 2 ·6H 2 O and 0.568 g Al(NO 3 ) 3 9H 2 O (purity are all AR grade) mixed together, add 50mL deionized water to make metal salt solution, 2.4g AR grade anhydrous Na 2 CO 3 Add to 40mL deionized water to make 1M Na 2 CO 3 solution; the metal salt solution is added dropwise in the graphene oxide solution to obtain a mixed solution of the metal salt and graphene oxide; the metal salt solution and the graphene oxide mixed solution are placed in an oil bath and kept at a constant temperature of 343K. Na 2 CO 3 Add the solution dropwise into the mixed solution until the pH of the mixed solution reaches 7-8. After stirring continuously for 5 hours, stop heating and continue stirring for 12 hours. Pour the feed liquid into a vacuum filtration device for suction filtration, and wash it with d...

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PUM

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Abstract

The invention discloses a graphene oxide promoted copper-based methanol synthesis catalyst. The catalyst is composed of Cu, ZnO, Al2O3 and graphene oxide (GO). The catalyst is composed of, by mass, 45-65% of Cu, 25-45% of ZnO, 5-10% of Al2O3, and 5-15% of GO. The invention also discloses a preparation method of the catalyst. The catalyst provided by the invention has the advantages of high and stable activity, and low operation temperature. With the catalyst, CO2 conversion rate and methanol yield are both substantially improved.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to a graphene oxide-promoted copper-based methanol synthesis catalyst and a preparation method thereof. Background technique [0002] With the rapid development of industrial production, the content of carbon dioxide in the atmosphere is increasing year by year, which leads to increasingly serious environmental pollution and greenhouse effect. Therefore, how to comprehensively utilize carbon dioxide has attracted more and more attention from all over the world. Synthesis of methanol from carbon dioxide hydrogenation can not only solve the problem of carbon dioxide waste gas utilization, but also develop a new way to produce methanol. This reaction has also become a research hotspot in the field of heterogeneous catalysis. However, due to the inertness of carbon dioxide, it is difficult to be activated. Therefore, the key to this research is to find a suitable catalyst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80C07C31/04C07C29/154
CPCY02P20/52
Inventor 许珊王晓来任红艳刘郑娟
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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