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A method for preparing carbon-containing compounds by electrocatalyzing carbon dioxide with copper alloy materials

A copper alloy and compound technology, applied in the field of electrocatalytic CO2 preparation, can solve problems such as poor stability, unsatisfactory catalytic selectivity of multi-carbon compounds, and reduced activity, and achieve low cost, suitable for industrial promotion and application, and mild conditions Effect

Active Publication Date: 2021-12-14
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A method for preparing carbon-containing compounds by electrocatalyzing carbon dioxide with copper alloy materials
  • A method for preparing carbon-containing compounds by electrocatalyzing carbon dioxide with copper alloy materials
  • A method for preparing carbon-containing compounds by electrocatalyzing carbon dioxide with copper alloy materials

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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 present invention provides a kind of synthetic method of carbon-containing compound, comprises the following steps, with the copper alloy material with amorphous structure as catalyst, CO 2 After electrochemical reaction, carbon-containing compounds are obtained. The present invention uses a copper alloy material with an amorphous structure as a catalyst to directly electrocatalyze the reduction of CO 2 Preparation of carbon-containing compounds such as alcohols, acids, and ketones. The copper alloy material in the present invention can be prepared into a variety of macroscopic forms such as bulk, powder and film, and can be directly used as an electrocatalytic electrode material in CO 2 The application in the electrocatalytic reduction battery improves the electrocatalytic activity and stability of the catalyst at the same time, thereby improving the performance and efficiency of the electrolytic cell. The synthesis method provided by the present invention can also effectively exert the synergistic catalytic performance between the catalysts by regulating the composition and structure of the copper alloy material with an amorphous structure, and then regulate the types of products to selectively obtain alcohols, acids and ketones, etc. different carbon compounds.

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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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/089C25B3/26C25B3/07C25B1/23B01J23/72C22C1/00C22C45/00C25B3/25
CPCC25B1/00C22C45/001B01J23/72B01J35/0033C25B3/25C25B11/091C22C1/11
Inventor 熊宇杰胡飞龙冉
Owner UNIV OF SCI & TECH OF CHINA
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