Cu/ZnO catalyst, preparation method thereof and application thereof to CO2 chemical conversion

A catalyst and reaction technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve problems such as no patent reports in the field of chemical transformation, and achieve reactivity and high stability, low reaction temperature, and the effect of suppressing the decrease in specific surface area

Active Publication Date: 2016-04-20
四川龙门智创环保新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For specific morphology CO at home and abroad 2 The research on hydrogenation catalysts is rarely reported in the literatur

Method used

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  • Cu/ZnO catalyst, preparation method thereof and application thereof to CO2 chemical conversion
  • Cu/ZnO catalyst, preparation method thereof and application thereof to CO2 chemical conversion
  • Cu/ZnO catalyst, preparation method thereof and application thereof to CO2 chemical conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 5g Zn(NO 3 ) 2 .6H 2 O and hexamethylenetetramine were dissolved in 100 mL of 15 wt % aqueous ethylene glycol. Under a nitrogen atmosphere, the reaction was carried out in a microwave reactor with a power of 300W for 10 minutes. Cool down to room temperature, filter the precipitate with suction, wash with hot deionized water until neutral, and dry at 90°C for 12 hours. Synthesis of ZnO-1 carrier. Such as figure 1 As shown, the ZnO carrier in the obtained catalyst has a uniform nano-flower shape; the petals are rod-shaped, and the length of the petals is 300-600 nm; the diameter is 20-40 nm.

[0025] (2) 2.84gCu(NO 3 ) 2 , 5.1 g of the ZnO carrier obtained in (1) was added to 150 mL of deionized water. Stir magnetically at 600r / min and heat to 75°C, slowly add 0.1mol / L Na 2 CO 3 The solution was further stirred and aged for 2 hours until the pH was 9-10, the precipitate was suction filtered, washed with hot deionized water until neutral, dried at 90°C for 1...

Embodiment 2

[0027] Zn(NO 3 ) 2 .6H 2 The mol ratio of O and hexamethylenetetramine is 1 / 1, and all the other are identical with embodiment 1. The Cu / ZnO catalyst was synthesized and named as Cu / ZnO-2. Such as figure 2 As shown, the obtained carrier has uniform nanorod morphology; the length is 2000-3000 nm; the diameter is 10-30 nm. The appearance of the catalyst is brown powder, and the XRD test results show that the average particle size of Cu particles is also between 10-25nm.

Embodiment 3

[0029] Zn(NO 3 ) 2 .6H 2 The mol ratio of O and hexamethylenetetramine is 1 / 0.5, and all the other are identical with embodiment 1. The Cu / ZnO catalyst was synthesized and named as Cu / ZnO-3.

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Abstract

The invention discloses a Cu/ZnO catalyst, a preparation method thereof and application thereof to CO2 chemical conversion and belongs to the fields of catalysis and greenhouse gas CO2 emission reduction. The preparation method of the Cu/ZnO catalyst includes the steps that soluble zinc salt and hexamethylene tetramine are dissolved in an ethylene glycol aqueous solution; under the inert atmosphere, a ZnO carrier is synthesized through reaction in a microwave reactor at the power of 200-300 W; by means of a deposition precipitation method, active metal copper is supported on the synthesized ZnO carrier. The synthesized ZnO carrier has uniform flowerlike or nanorod morphology, and the Cu loading is 5-15 wt%. The catalyst represents high activity and stability in the reaction of synthesizing low-carbon alcohol through CO2 catalytic conversion. The synthesized catalyst has the advantages of being simple in technology, low in cost, high in catalytic performance and the like, and accords with the development trend of green chemical engineering. Besides, the catalyst has wide application prospects in the field of synthesizing important chemicals through CO2 chemical conversion.

Description

technical field [0001] The present invention relates to a kind of Cu / ZnO catalyst and its preparation method and CO 2 Applications in chemical transformations, belonging to the fields of catalytic chemistry and greenhouse gas emission reduction. Background technique [0002] Greenhouse gas CO 2 It mainly comes from the combustion emissions of fossil resources. With the rapid development of modern industry, CO in the atmosphere 2 The concentration is getting higher and higher, leading to the greenhouse effect and global temperature rise, which seriously affects human production and life. reduce CO 2 Atmospheric content has become one of the hot research areas at present. CO-based 2 is an inexpensive, abundant C 1 resource considerations, the CO 2 Used as carbon and oxygen resources, the use of chemical conversion to synthesize high value-added chemicals is the solution to CO 2 It is an important way to affect the environment, and it is also an effective measure to sol...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J37/34B82Y30/00B82Y40/00C07C29/156C07C31/04
CPCB01J23/80B01J37/346B82Y30/00B82Y40/00C07C29/156C07C31/04Y02E50/10Y02P20/52
Inventor 蔡伟杰张绍印崔励张江华
Owner 四川龙门智创环保新材料科技有限公司
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