Long-life copper-based composite material

A copper-based composite material, high-life technology, applied in the field of electrochemistry, can solve the problems of unresearched electrocatalytic electrode life, catalytic activity needs to be improved, etc., to achieve the effect of improving contact specific surface area, high ethylene selectivity, and avoiding binding reactions

Pending Publication Date: 2021-03-16
赵玉平
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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 ethylene is the most important energy hydrogenation raw material in chemical production; ( 2) The life of the electrocatalytic electrode has not been studied; (3) The catalytic activity needs to be improved

Method used

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  • Long-life copper-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A long-life copper-based composite material, prepared by the following method:

[0058] (1) Pretreating the copper-based alloy; the copper-based alloy is copper-nickel-nickel alloy.

[0059] Among them, the pretreatment of step (1) is grinding and inorganic degreasing: the grinding is: use 200#, 600#, 1200# sandpaper for sanding in sequence.

[0060] 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.

[0061] (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.

[0062] 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 / L Cl - ;0.5...

Embodiment 2

[0072] A long-life copper-based composite material, prepared by the following method:

[0073] (1) Pretreating the copper-based alloy; the copper-based alloy is copper-nickel-nickel alloy.

[0074] Among them, the pretreatment of step (1) is grinding and inorganic degreasing: the grinding is: use 200#, 600#, 1200# sandpaper for sanding in sequence.

[0075] 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.

[0076] (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.

[0077] 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 ; 42.5g / L Cl - ...

Embodiment 3

[0087] A long-life copper-based composite material, prepared by the following method:

[0088] (1) Pretreating the copper-based alloy; the copper-based alloy is copper-nickel-nickel alloy.

[0089] Among them, the pretreatment of step (1) is grinding and inorganic degreasing: the grinding is: use 200#, 600#, 1200# sandpaper for sanding in sequence.

[0090] 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.

[0091] (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.

[0092] 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 - ; 1g / LAPEO; ...

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Abstract

The invention provides a long-life copper-based composite material, which comprises a copper alloy base material, a porous copper layer, a seed crystal copper layer, spiny copper and a copper oxide layer from bottom to top, the copper alloy is a copper-nickel alloy, spiny copper is formed on the surface of a copper base in a hydrothermal mode, the specific surface area and active sites of an electrode material can be remarkably increased, and the stability of an electrode is good. The obtained spiny copper is not easy to peel off and fall off; and the service life 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 long-life copper-based composite material, which is 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 attracted much attentio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/061C25B11/091C25D3/38C23C18/40C23C28/00C23C26/00C25B3/26C25B3/03C25B11/02
CPCC25B11/02C25D3/38C23C18/40C23C28/322C23C28/345C23C26/00
Inventor 赵玉平
Owner 赵玉平
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