Preparation method of long-life copper-based composite material

A technology of copper-based composite materials and copper-based alloys, which is applied in the field of electrochemistry, can solve the problems of catalytic activity to be improved, and the service life of electrocatalytic electrodes has not been studied, so as to achieve the effect of good corrosion resistance

Active Publication Date: 2021-03-02
珠海大华新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The following problems can be clearly drawn from the above patents: (1) As the best ethylene selective catalyst, there are few research directions aimed at improving ethylene selectivity, and ethy

Method used

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  • Preparation method of long-life copper-based composite material
  • Preparation method of long-life copper-based composite material
  • Preparation method of long-life copper-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A method for preparing a long-life copper-based composite material, comprising the steps of:

[0068] (1) Pretreating the copper-based alloy; the copper-based alloy is copper-nickel-nickel alloy.

[0069] Among them, the pretreatment of step (1) is grinding and inorganic degreasing: the grinding is: use 200#, 600#, 1200# sandpaper for sanding in sequence.

[0070] Degreasing is 15g / L Na 2 CO 3 , 10g / L Na 3 PO 4 . 12H 2 O, 10 g / L Na 2 SiO 3 , the temperature is 50 o C, time 2min.

[0071] (2) The copper-containing solution is used as the electrolyte, and the copper-based alloy is used as the cathode, and the electrochemical deposition reduction is carried out at a very high negative bias voltage.

[0072] Wherein the copper-containing electrolyte in step (2) includes copper sulfate, sulfuric acid, chloride ions and surfactants, the anode is an inert electrode or pure copper, and the copper-containing electrolyte: 140g / L CuSO 4 . 5H 2 O; 30g / L H 2 SO 4 ; 40g / ...

Embodiment 2

[0082] A method for preparing a long-life copper-based composite material, comprising the steps of:

[0083] (1) Pretreating the copper-based alloy; the copper-based alloy is copper-nickel-nickel alloy.

[0084] Among them, the pretreatment of step (1) is grinding and inorganic degreasing: the grinding is: use 200#, 600#, 1200# sandpaper for sanding in sequence.

[0085] Degreasing is 15g / L Na 2 CO 3 , 10g / L Na 3 PO 4 . 12H 2 O, 10 g / L Na 2 SiO 3 , the temperature is 50 o C, time 2min.

[0086] (2) The copper-containing solution is used as the electrolyte, and the copper-based alloy is used as the cathode, and the electrochemical deposition reduction is carried out at a very high negative bias voltage.

[0087] Wherein the copper-containing electrolyte in step (2) includes copper sulfate, sulfuric acid, chloride ions and surfactants, the anode is an inert electrode or pure copper, and the copper-containing electrolyte: 145g / L CuSO 4 . 5H 2 O; 32.5g / L H 2 SO 4 ; ...

Embodiment 3

[0097] A method for preparing a long-life copper-based composite material, comprising the steps of:

[0098] (1) Pretreating the copper-based alloy; the copper-based alloy is copper-nickel-nickel alloy.

[0099] Among them, the pretreatment of step (1) is grinding and inorganic degreasing: the grinding is: use 200#, 600#, 1200# sandpaper for sanding in sequence.

[0100] Degreasing is 15g / L Na 2 CO 3 , 10g / L Na 3 PO 4 . 12H 2 O, 10 g / L Na 2 SiO 3 , the temperature is 50 o C, time 2min.

[0101] (2) The copper-containing solution is used as the electrolyte, and the copper-based alloy is used as the cathode, and the electrochemical deposition reduction is carried out at a very high negative bias voltage.

[0102] The copper-containing electrolyte in step (2) includes copper sulfate, sulfuric acid, chloride ions and surfactants, the anode is an inert electrode or pure copper, and the copper-containing electrolyte: 150g / L CuSO 4 . 5H 2 O; 35g / L H 2 SO 4 ; 45g / L Cl ...

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Abstract

The invention relates to a preparation method of a long-service-life copper-based composite material, spiny copper is formed on the surface of the copper base in a hydrothermal mode, the specific surface area and active sites of an electrode material can be remarkably increased, the electrode stability is good, and the obtained spiny copper is not prone to stripping or falling off; and the servicelife of the catalyst can be prolonged while the high ethylene conversion rate is ensured.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and in particular relates to a preparation method of a long-life copper-based composite material, especially suitable for electrocatalytic reduction of carbon dioxide to produce ethylene. [0002] technical background [0003] CO 2 The chemical structure is stable, so CO 2 The activation of the molecule is very difficult, so it is difficult to participate in the reaction, so as to [0004] Often harsh reaction conditions such as high temperature and pressure are used to convert them. Usually, researchers use methods such as chemical reformation, mineralization, enzyme catalysis, photocatalysis, and electrocatalysis to overcome the large activation energy barrier of CO2. In these methods, due to the mild conditions of the electrochemical reduction reaction and the absence of H 2 As a raw material, its reaction pH value is close to neutral and its excellent clean energy compatibility has attracte...

Claims

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Application Information

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IPC IPC(8): C25B3/26C25B3/03C25B11/052C25B11/061C25B11/091C25D3/38C25D5/48C25D5/34
CPCC25D3/38C25D5/48C25D5/34
Inventor 赵玉平
Owner 珠海大华新材料有限公司
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