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Method for synthesizing Cu/ZnO catalyst based on hard template copper oxide nanosheet

A technology of copper oxide and nanosheets, applied in the chemical industry, can solve the problems of cost increase and achieve high catalytic activity, catalytic activity and excellent stability

Pending Publication Date: 2020-08-18
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method needs to remove the copper element at the end to prevent catalytic interference and increase the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Mix 800mg of hard template copper oxide nanosheets with 800ml of deionized water, and then stir for 2 hours at a speed of 30r / min to fully disperse the hard template copper oxide nanosheets in deionized water.

[0016] 2. Heat the solution to 50° C., at this temperature, add zinc chloride with the same molar number as the hard template copper oxide nanosheets at a speed of 30 r / min, so that it is completely dissolved in the solution.

[0017] 3. After stirring for 2 hours, the following reaction occurred:

[0018] ZnCl 2 +CuO→CuCl 2 +ZnO. At the same time, the color of the solution gradually changed from black to gray. The precipitate was then isolated by filtration and washed with excess deionized water to remove unreacted zinc ions.

[0019] 4. Rinse the remaining gray sample with deionized water, and finally vacuum dry and crush to obtain the iron oxide catalyst.

[0020] The material exhibited higher catalytic reactivity at a lower temperature of 425 °C, CO ...

Embodiment 2

[0022] 1. Mix 500mg of hard template copper oxide nanosheets with 500ml of deionized water, and then stir for 3 hours at a speed of 50r / min to fully disperse the hard template copper oxide nanosheets in deionized water.

[0023] 2. Heat the solution to 40°C. At this temperature, add zinc chloride with the same molar number as the hard template copper oxide nanosheets at a speed of 40r / min to completely dissolve it in the solution.

[0024] 3. After stirring for 3 hours, the following reaction occurred:

[0025] ZnCl 2 +CuO→CuCl 2 +ZnO. At the same time, the color of the solution gradually changed from black to gray. The precipitate was then isolated by filtration and washed with excess deionized water to remove unreacted zinc ions.

[0026] 4. Rinse the remaining gray sample with deionized water, and finally vacuum dry and crush to obtain the iron oxide catalyst.

[0027] The material exhibited higher catalytic reactivity at a lower temperature of 425 °C, CO 2 Conversion...

Embodiment 3

[0029] 1. Mix 1200 mg of hard template copper oxide nanosheets with 1200 ml of deionized water, and then stir for 5 hours at a speed of 60 r / min to fully disperse the hard template copper oxide nanosheets in deionized water.

[0030] 2. Heat the solution to 80° C., at this temperature, add zinc chloride with the same molar number as the hard template copper oxide nanosheets at a speed of 60 r / min, so that it is completely dissolved in the solution.

[0031] 3. After stirring for 5 hours, the following reaction occurred:

[0032] ZnCl 2 +CuO→CuCl 2 +ZnO. At the same time, the color of the solution gradually changed from black to gray. The precipitate was then isolated by filtration and washed with excess deionized water to remove unreacted zinc ions.

[0033] 4. Rinse the remaining gray sample with deionized water, and finally vacuum dry and crush to obtain the iron oxide catalyst.

[0034] The material exhibited higher catalytic reactivity at a lower temperature of 425 °C...

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PUM

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Abstract

The invention discloses a method for synthesizing a Cu / ZnO catalyst based on a hard template copper oxide nanosheet. The Cu / ZnO nano-catalyst with excellent catalytic activity and stability is obtained; used raw material medicaments are safe and easy to obtain; the catalyst is used for preparation of methanol by catalytic hydrogenation of carbon dioxide, shows high catalytic reaction activity at alow temperature of 425 DEG C, has a CO2 conversion rate of 83% or more, a CO yield of 31% or more and a CH3OH yield of 52% or more, and can be used for development and application of green and environment-friendly new energy.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a method for synthesizing a Cu / ZnO catalyst based on a hard template copper oxide nanosheet. Background technique [0002] The water gas (WGS) shift reaction has been studied for nearly a century, and the technology is relatively mature. The reverse water gas shift reaction (RWGS) can use abundant and cheap carbon dioxide as a carbon source, carbon monoxide generated by the RWGS reaction as an intermediate product, and use the F-T synthesis method to prepare olefins; RWGS can also be used to produce ethanol. At present, the CAMERE method is widely used in the production of methanol, in which the RWGS reaction at high temperature is the key step, and the higher the conversion rate of carbon monoxide is, the more favorable it is for the synthesis of methanol. Therefore, a highly stable catalyst is crucial for the CAMERE reaction. [0003] Traditional RWGS catalysts mainly include zi...

Claims

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Application Information

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IPC IPC(8): B01J23/80C07C29/154C07C31/04
CPCB01J23/80B01J37/0009C07C29/154C07C2523/80C07C31/04Y02E50/10Y02P20/52
Inventor 姚君张展张欣张馨予贾楠楠
Owner ANGANG STEEL CO LTD
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