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Cathode material for generating ratio-controllable synthesis gas through carbon dioxide reducing under electrocatalysis, preparation method and application

A cathode material, carbon dioxide technology, applied in the direction of electrodes, electrolysis components, electrolysis process, etc., to achieve the effect of good catalytic stability, cheap and easy to obtain materials, and simple modification process

Active Publication Date: 2018-06-22
北京中立鸿环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the performance, cost, and subsequent product separation of electrode catalysts are constraints for CO 2 The main factors of the practical application of ER

Method used

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  • Cathode material for generating ratio-controllable synthesis gas through carbon dioxide reducing under electrocatalysis, preparation method and application
  • Cathode material for generating ratio-controllable synthesis gas through carbon dioxide reducing under electrocatalysis, preparation method and application
  • Cathode material for generating ratio-controllable synthesis gas through carbon dioxide reducing under electrocatalysis, preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Cut the h62 brass sheet into a size suitable for the shape of the electrolytic cell;

[0035] 2) Carry out degreasing pretreatment on the cut brass sheet;

[0036] 3) While degreasing, raise the temperature of the tube furnace to the set temperature of 500°C, and continuously feed air at a flow rate of 300ml / min;

[0037] 4) Put the clean brass sheet in a tube furnace that has been raised to the set temperature, and heat it at a constant temperature for 1 hour, and cool it down naturally in the air atmosphere after treatment;

[0038] 5) Electrochemical reduction of the heat-treated brass sheet, the electrolyte is 0.5 M potassium bicarbonate solution, and the counter electrode is RuO 2 The coated titanium mesh electrode, the reference electrode is a saturated calomel electrode, the reduction potential is set to -1.3V, the reduction to the current curve remains stable, and the reduction treatment electrode sheet is taken out and dried with an inert gas to obtain the ...

Embodiment 2

[0041] 1) Cut the h62 brass sheet into a size suitable for the shape of the electrolytic cell;

[0042] 2) Carry out degreasing pretreatment on the cut brass sheet;

[0043] 3) While degreasing, raise the temperature of the tube furnace to the set temperature of 500°C, and continuously feed air at a flow rate of 300ml / min;

[0044] 4) Put the clean brass sheet in a tube furnace that has been raised to the set temperature, and heat it at a constant temperature for 3 hours, and cool it down naturally in the air atmosphere after treatment;

[0045] 5) Electrochemical reduction of the heat-treated brass sheet, the electrolyte is 0.5 M potassium bicarbonate solution, and the counter electrode is RuO 2 The coated titanium mesh electrode, the reference electrode is a saturated calomel electrode, the reduction potential is set to -1.3V, the reduction to the current curve remains stable, and the reduction treatment electrode sheet is taken out and dried with an inert gas to obtain the...

Embodiment 3

[0047] 1) Cut the h62 brass sheet into a size suitable for the shape of the electrolytic cell;

[0048] 2) Carry out degreasing pretreatment on the cut brass sheet;

[0049] 3) While degreasing, raise the temperature of the tube furnace to the set temperature of 300°C, and continuously feed air at a flow rate of 300ml / min;

[0050] 4) Put the clean brass sheet in a tube furnace that has been raised to the set temperature, and heat it at a constant temperature for 3 hours, and cool it naturally in the air atmosphere after treatment;

[0051] 5) Electrochemical reduction of the heat-treated brass sheet, the electrolyte is 0.5 M potassium bicarbonate solution, and the counter electrode is RuO 2 The coated titanium mesh electrode, the reference electrode is a saturated calomel electrode, the reduction potential is set to -1.3V, the reduction to the current curve remains stable, and the reduction treatment electrode sheet is taken out and dried with an inert gas to obtain the cath...

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Abstract

The invention relates to a cathode material for generating ratio-controllable synthesis gas through carbon dioxide reducing under electrocatalysis, a preparation method and application. The preparation method comprises the following steps that (a) an h62 brass strip is heated and calcined in flowing air bath; and (b) after cooling is conducted, the calcined brass strip is subjected to electrochemical reduction in an electrolyte, and finally the cathode material is obtained. The preparation method is simple, operation is easy, treatment conditions are changed to form different catalysis surfaces, the performance of Co and H2 generated through catalysis is adjusted and controlled accordingly, and thus ratio adjusting and controlling of the synthesis gas composed of CO and H2 is achieved.

Description

technical field [0001] The invention belongs to the field of electrochemical reduction of carbon dioxide, and in particular relates to a cathode material for electrocatalytic reduction of carbon dioxide to generate synthesis gas with a controllable ratio, a preparation method and an application. Background technique [0002] Electrochemical reduction of CO 2 (CO 2 ER) technology will chemically stable CO 2 The electrochemical method is used to force catalytic reduction to small molecule energy substances such as CO, HCOOH, alcohols, etc., which is CO 2 An important way of resource utilization, in which the research of cathode catalyst materials is the focus of this method. [0003] There has been a lot of post about CO 2 Most of the research reports on ER cathode materials focus on the construction of a catalytically active interface with unique microscopic morphology by adjusting the composition and changing the treatment method, so as to achieve CO 2 High product sele...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/00
CPCC25B1/00C25B11/075
Inventor 杨晓进胡汉君杜念王煜添唐阳万平玉
Owner 北京中立鸿环境技术有限公司
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