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Method for preparing carbon-containing compound by electro-catalyzing carbon dioxide with copper alloy material

A technology of hydrocarbons and copper alloys, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve the problem of unsatisfactory catalytic selectivity and poor stability of multi-carbon compounds , activity reduction and other issues, to achieve the effect suitable for industrialization promotion and application, low cost and mild conditions

Active Publication Date: 2020-04-28
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above non-single metal catalysts are effective in reducing CO 2 The Faraday conversion efficiency and the catalytic selectivity of multi-carbon compounds are not ideal, and there will be problems of reduced activity and poor stability in practical applications.

Method used

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  • Method for preparing carbon-containing compound by electro-catalyzing carbon dioxide with copper alloy material
  • Method for preparing carbon-containing compound by electro-catalyzing carbon dioxide with copper alloy material
  • Method for preparing carbon-containing compound by electro-catalyzing carbon dioxide with copper alloy material

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preparation example Construction

[0075] The invention provides a kind of synthetic method of carbon-containing compound, comprises the following steps:

[0076] Copper alloy materials with amorphous structure were used as catalysts to convert CO 2 After electrochemical reaction, carbon-containing compounds are obtained.

[0077] In principle, the present invention has no special restrictions on the copper content of the copper alloy material having an amorphous structure. Those skilled in the art can select and adjust according to actual conditions, electrolysis requirements and product requirements. The present invention is to better ensure the electrochemical reaction progress, improve the electrocatalytic activity and stability of the catalyst, and then improve the performance and efficiency of the electrolytic cell, more effectively exert the synergistic catalytic performance between the catalysts, better regulate the types of products and improve the Faraday effect, and the amorphous The content of copp...

Embodiment 1

[0131] A preparation method of copper alloy Cu-Ti electrocatalytic electrode, comprising the following steps:

[0132] Step 1: Put Cu and Ti in a high-temperature melting furnace, the molar ratio of copper and titanium is 50:50, stir evenly after melting, and cool down to obtain an electrocatalytic electrode alloy;

[0133] Step 2: Melt the alloy obtained in Step 1 again, and carry out liquid-phase quenching on a rotating copper disk with a cooling rate of 10 5 K / s, the rotation speed is 2000rpm, and the amorphous Cu-Ti electrocatalytic electrode is obtained;

[0134] Step 3: Soak the amorphous electrocatalytic electrode obtained in Step 2 in a 50 mM hydrofluoric acid solution, and react at 25° C. for 12 hours to obtain a copper alloy catalytic electrode.

[0135] The copper alloy electrocatalytic electrode prepared in Example 1 of the present invention was scanned and tested, and the model of the scanning electron microscope was FEI Quanata 200FEG.

[0136] see figure 1 , ...

Embodiment 2

[0144] A method for preparing a copper alloy Cu-Ti electrocatalytic electrode is basically the same as in Example 1, the difference is only in the molar ratio of elements in step 1, the molar ratio of copper and titanium is 70:30.

[0145] Scanning test and transmission electron microscope test were carried out on the copper alloy electrocatalytic electrode prepared in Example 2 of the present invention. The model of the scanning electron microscope is FEI Quanata 200FEG, and the model of the transmission electron microscope is JEM-2100F.

[0146] From the characterization results, the catalytic electrode prepared in Example 2 is also specifically as follows: figure 1 Similar nanoscale pores in and figure 2 Amorphous properties in .

[0147] The electrocatalytic electrode prepared in Example 2 of the present invention was subjected to CO 2 RR test, test CO 2 Electrocatalytic reduction performance.

[0148] The performance test was carried out in a three-electrode system. ...

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Abstract

The invention provides a synthesis method of a carbon-containing compound. The synthesis method comprises the following steps: using a copper alloy material with an amorphous structure as a catalyst,and carrying out electrochemical reaction on CO2 to obtain the carbon-containing compound. The copper alloy material with the amorphous structure is used as the catalyst, and CO2 is directly electrocatalytically reduced to prepare alcohol, acid, ketone and other carbon-containing compounds. The copper alloy material can be prepared into various macroscopic forms such as a block shape, a powder shape and a film shape and can be directly used as an electrocatalytic electrode material to be applied to a CO2 electrocatalytic reduction battery, and the electrocatalytic activity and the stability ofthe catalyst are improved and then the performance and the efficiency of an electrolytic tank are improved. According to the synthesis method, the composition and the structure of the copper alloy material with the amorphous structure can be regulated and controlled so that the synergistic catalytic performance among the catalysts can be effectively exerted, the variety of products can be regulated and controlled and different carbon-containing compounds such as alcohol, acid and ketone can be selectively obtained.

Description

technical field [0001] The invention belongs to electrocatalytic CO 2 The field of preparation technology relates to a synthesis method of a carbon-containing compound, in particular to a copper alloy material for electrocatalyzing CO 2 Process for preparing carbonaceous compounds. Background technique [0002] Modern industrial society is very dependent on fossil energy, and the greenhouse gases released by the combustion of fossil energy have caused global environmental and climate problems. At the same time, the demand for industrial products prepared from fossil energy such as formic acid, ethanol, and acetone is increasing day by day. If the existing industrial production mode continues to operate, economic development and human living environment will inevitably form opposition. We urgently need new technologies that can produce high-value hydrocarbon products while producing net negative carbon dioxide emissions. [0003] Electrochemical reduction reaction has the...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/00C25B3/04B01J23/72C22C1/00C22C45/00C25B3/25
CPCC25B1/00C22C45/001B01J23/72C25B3/25C25B11/091C22C1/11B01J35/33
Inventor 熊宇杰胡飞龙冉
Owner UNIV OF SCI & TECH OF CHINA
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