Modified manganese dioxide catalyst, modified manganese dioxide catalyst electrode and preparation method of modified manganese dioxide catalyst and modified manganese dioxide catalyst electrode

A technology of manganese dioxide and nano-manganese dioxide, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve short service life and low anode current efficiency and other problems, to achieve the effect of low price, improved conductivity and stability of crystal structure, and refined grains

Active Publication Date: 2015-04-08
湖南久盛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the defects of low current efficiency and short service life of the anode in the existing electrolysis industry, the first purpose of the present invention is to provide a modified electrolytic anode that can be used to prepare a high current efficiency, long service life and low cost. Manganese oxide catalyst material

Method used

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  • Modified manganese dioxide catalyst, modified manganese dioxide catalyst electrode and preparation method of modified manganese dioxide catalyst and modified manganese dioxide catalyst electrode
  • Modified manganese dioxide catalyst, modified manganese dioxide catalyst electrode and preparation method of modified manganese dioxide catalyst and modified manganese dioxide catalyst electrode
  • Modified manganese dioxide catalyst, modified manganese dioxide catalyst electrode and preparation method of modified manganese dioxide catalyst and modified manganese dioxide catalyst electrode

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Embodiment 1

[0056] (1) Process the grade as TA1 so that the effective area of ​​the end is 2cm 2 of long strips. After degreasing and corundum sandblasting on the surface, clean it with water and soak it in 3% oxalic acid solution for use;

[0057] (2) Put Ti 4 o 7 (45%) and Ti 5 o 9 (35%) titanium dioxide powder with a total crystal content of 80% is pretreated. The treatment process is to first soak in nitric acid with a concentration of 3mol / L, wash with water until neutral, and repeat the soaking and washing process 3 times to fully remove acid-soluble impurities; then soak in 5mol / L sodium hydroxide solution, and wash with water until neutral. Neutral, repeat the soaking and washing process 3 times to fully remove alkali-soluble impurities; finally wash 3 times with acetone to remove organic matter; vacuum dry, pass through a 300-mesh sieve, and set aside.

[0058] (3) After the titanium plate soaked in the oxalic acid solution was cleaned and dried at 100° C., the surface was ...

Embodiment 2

[0074] (1) Process the grade as TA1 so that the effective area of ​​the end is 2cm 2 of long strips. After degreasing and corundum sandblasting on the surface, clean it with water and soak it in 5% oxalic acid solution for use;

[0075] (2) Put Ti 4 o 7 (40%) and Ti 5 o 9(35%) TiO2 powder with a crystal content of 75% was pretreated. The treatment process is to soak in nitric acid with a concentration of 2.5mol / L, wash with water until neutral, and repeat the soaking and washing process 4 times to fully remove acid-soluble impurities; then soak in 4mol / L alkaline solution, wash with water until neutral and repeat the soaking and washing process 5 times to fully remove alkali-soluble impurities; finally wash 2 times with acetone to remove organic matter; vacuum dry, pass through a 300-mesh sieve, and set aside.

[0076] (3) After cleaning and drying the titanium plate soaked in the oxalic acid solution, the surface is subjected to corundum sandblasting treatment. Dry the...

Embodiment 3

[0083] (1) Process the grade as TA1 so that the effective area of ​​the end is 2cm 2 of long strips. After degreasing and corundum sandblasting on the surface, clean it with water and soak it in 2% oxalic acid solution for use;

[0084] (2) Put Ti 4 o 7 (40%) and Ti 5 o 9 (40%) Titanium oxide powder with a crystal content of 80% was pretreated. The treatment process is to soak in nitric acid with a concentration of 2mol / L, wash with water until neutral, and repeat the soaking and washing process 3 times to fully remove acid-soluble impurities; then soak in 5mol / L alkaline solution, and wash with water until neutral , and repeat the soaking and washing process 3 times to fully remove alkali-soluble impurities; finally wash 3 times with acetone to remove organic matter; vacuum dry, pass through a 300-mesh sieve, and set aside.

[0085] (3) After cleaning and drying the titanium plate soaked in the oxalic acid solution, the surface is subjected to corundum sandblasting trea...

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Abstract

The invention discloses a modified manganese dioxide catalyst, a modified manganese dioxide catalyst electrode and a preparation method of and the modified manganese dioxide catalyst and the modified manganese dioxide catalyst electrode. The manganese dioxide catalyst is prepared through an impregnation method, and is formed by fluorine ions and metal ions doped nano-manganese oxide is loaded on a metallic oxide carrier with a rutile crystal structure and an oxygen-deficiency structure simultaneously; a corrosion-resistant conductive layer formed by the metallic oxide with the rutile crystal structure and the oxygen-deficiency structure and a modified manganese dioxide catalyst layer formed by the fluorine ions and metal ions doped nano-manganese oxide are sequentially prepared on a conductive base body to prepare the modified manganese dioxide catalyst electrode; the modified manganese dioxide catalyst and the modified manganese dioxide catalyst electrode have the characteristics of high current efficiency and long service life; and besides, the preparation method can be operated simply, the cost is low and the industrial production requirement is met.

Description

technical field [0001] The invention relates to a modified manganese dioxide catalyst, a modified manganese dioxide catalyst electrode and a preparation method, and belongs to the field of hydrometallurgy and electrode material preparation. Background technique [0002] In the hydrometallurgy process of copper, zinc, manganese, nickel, cobalt, chromium and other metals, electrodeposition is the main energy-consuming process of the whole process, and the anode is one of the key components of the electrodeposition process. The choice of its material not only directly affects the electric energy Consumption, electrode life, also affects the quality of cathode products. In general, electrode materials must meet the following requirements: good electrical conductivity, strong corrosion resistance, good mechanical strength and processability, and good electrocatalysis for electrode reactions. At present, the anodes used in the electrolysis industry include platinum (platinized ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/656B01J23/68B01J23/889C25C7/02
Inventor 黄华芝杨鹏
Owner 湖南久盛新材料科技有限公司
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