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Electrode material for three-dimensional electrode and preparation method and application thereof

An electrode material and three-dimensional electrode technology, which are applied in chemical instruments and methods, water treatment parameter control, water/sewage treatment equipment, etc., can solve the problems of complex preparation process, poor stability, and high cost, and achieve simple and stable preparation methods. Good, high applicability effect

Active Publication Date: 2022-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a three-dimensional electrode electrocatalytic oxidation technology for overcoming the problems of poor stability, short service life, complex preparation process and high cost of the electrode materials used in the three-dimensional electrode electrocatalytic oxidation technology in the prior art. The electrode material has the characteristics of simple preparation method, low price, strong applicability and good stability during use.

Method used

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  • Electrode material for three-dimensional electrode and preparation method and application thereof
  • Electrode material for three-dimensional electrode and preparation method and application thereof
  • Electrode material for three-dimensional electrode and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The electrode material A1 was prepared according to the following method:

[0064] (1) Add nonionic polyacrylamide (weight average molecular weight 150,000), ferric sulfate heptahydrate, copper sulfate pentahydrate, nickel nitrate hexahydrate, cerium nitrate hexahydrate and cobalt nitrate hexahydrate into water to prepare an impregnation solution. Among them, the concentration of non-ionic polyacrylamide is 20 mg / L, and the total concentration of metal ions is 30 mg / L. Fe 2+ 、Cu 2+ 、Ni 2+ 、Ce 3+ 、Co 2+ The mass ratio is 6:6:5:5:4.

[0065] (2) At 45°C, impregnate alumina honeycomb ceramics (diameter 2.5±0.5cm, height 1.5±0.5cm) with an average weight of 15.26g in the impregnation solution prepared in step (1), using excessive impregnation (impregnation Liquid and alumina honeycomb ceramic volume ratio is 2:1), impregnated for 2h.

[0066] (3) Hang the impregnated alumina honeycomb ceramics to dry, remove excess solution therein, and put it into an oven for drying...

Embodiment 2

[0069] Prepare and obtain electrode material A2 according to the following method:

[0070] (1) Add nonionic polyacrylamide (weight average molecular weight 150,000), ferric sulfate heptahydrate, copper sulfate pentahydrate, nickel nitrate hexahydrate, cerium nitrate hexahydrate and cobalt nitrate hexahydrate into water to prepare an impregnation solution. Among them, the concentration of non-ionic polyacrylamide is 20 mg / L, and the total concentration of metal ions is 20 mg / L. Fe 2+ 、Cu 2+ 、Ni 2+ 、Ce 3+ 、Co 2+ The mass ratio is 5:5:2:2:1.

[0071] (2) At 45°C, impregnate alumina honeycomb ceramics (diameter 2.5±0.5cm, height 1.5±0.5cm) with an average weight of 17.50g in the impregnating solution prepared in step (1), using excessive impregnation (impregnation Liquid and alumina honeycomb ceramic volume ratio is 2:1), impregnated for 2h.

[0072] (3) Hang the impregnated alumina honeycomb ceramics to dry, remove excess solution therein, and put it into an oven for dryi...

Embodiment 3

[0075] Prepare and obtain electrode material A3 according to the following method:

[0076] (1) Add nonionic polyacrylamide (weight average molecular weight 150,000), ferric sulfate heptahydrate, copper sulfate pentahydrate, nickel nitrate hexahydrate and cerium nitrate hexahydrate into water to prepare an impregnation solution. Among them, the concentration of non-ionic polyacrylamide is 15 mg / L, and the total concentration of metal ions is 20 mg / L. Fe 2+ 、Cu 2+ 、Ni 2+ 、Ce 3+ The mass ratio is 3:3:2:2.

[0077] (2) At 45°C, immerse alumina honeycomb ceramics (2.5±0.5cm in diameter, 1.5±0.5cm in height) with an average weight of 16.31g in the impregnating solution prepared in step (1), using the method of excessive impregnation (The volume ratio of impregnation solution to alumina honeycomb ceramics is 2:1), impregnation for 2h.

[0078] (3) Hang the impregnated alumina honeycomb ceramics to dry, remove excess solution therein, and put it into an oven for drying at 80° C...

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Abstract

The invention relates to the field of electrocatalytic oxidation, and discloses a method for preparing an electrode material for a three-dimensional electrode, the method comprises the following steps: impregnating an alumina matrix in an impregnation liquid containing metal ions, and sequentially drying and roasting the alumina matrix after the impregnation is completed, and the roasting is carried out under the protection of an inert atmosphere. The electrode material prepared by the method provided by the invention has the advantages of high applicability, good stability, high catalytic activity, low energy consumption per unit chemical oxygen demand, difficult loss of active components, long continuous service life and the like, can be regenerated and reused for multiple times, and is suitable for large-scale industrial production and application.

Description

technical field [0001] The invention relates to the technical field of electrocatalytic oxidation, in particular to an electrode material for a three-dimensional electrode and a preparation method and application thereof. Background technique [0002] Industrial wastewater contains radioactive substances, acid-base substances and various organic substances. These harmful substances will pollute soil and water resources, and will directly or indirectly endanger human health. In addition, the wanton use and discharge of industrial water and waste water has led to a serious waste of water resources in our country. In this context, the reuse of industrial wastewater treatment has become a major issue at present. Biologically toxic organic wastewater is a difficult point in the treatment of industrial wastewater. Traditional treatment methods, such as chemical precipitation, biological method and Fenton method, cannot meet the needs of treatment. [0003] Electrocatalytic oxida...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/30
CPCC02F1/46114C02F1/725C02F2001/46142C02F2101/30C02F2209/08C02F2201/46105C02F2201/4617
Inventor 胡潇雨姜健准殷杰施展王燕娜崔爽刘静柳颖
Owner CHINA PETROLEUM & CHEM CORP
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