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Ternary composite oxide inert anode preparation method

An inert anode and ternary composite technology, which is applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of expensive iridium and high anode cost, achieve good service life, good oxygen evolution catalytic activity, and simple preparation method process Effect

Inactive Publication Date: 2018-01-19
王成彦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But iridium is expensive, and the anodes made from it are expensive

Method used

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  • Ternary composite oxide inert anode preparation method

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Effect test

Embodiment 1

[0030] Example 1. Firstly, a titanium plate of 10 mm×10 mm×1 mm was washed with alkali at 60° C. for 30 minutes, etched with 10% oxalic acid at 90° C. for 2.5 hours, ultrasonically cleaned with deionized water for 10 minutes, and then dried for later use.

[0031] Weigh a certain mass of H 2 IrCl 6 and Ce(NO 3 ) 3 Miscible with tetraethyl silicate, stand at room temperature for 2 hours.

[0032] Ce(NO 3 ) 3 、H 2 IrCl 6 The mixed solution of tetraethyl silicate and tetraethyl silicate is dissolved in a mixed solvent of n-butanol and isopropanol mixed in a ratio of 1:1 to obtain a coating solution. Ce(NO 3 ) 3 、H 2 IrCl 6 The molar concentrations of tetraethyl silicate and tetraethyl silicate were 0.018, 0.042 and 0.14mol / L, respectively.

[0033] The prepared coating solution was evenly coated on the surface of the pretreated titanium substrate with a brush, dried at 120°C for 10 minutes, then sintered at 450°C for 10 minutes, and cooled to room temperature after ta...

Embodiment 2

[0035] Example 2. First, a titanium plate of 10mm×10mm×1mm was washed with alkali at 60°C for 30 minutes, etched with 10% oxalic acid at 90°C for 2.5 hours, ultrasonically cleaned with deionized water for 10 minutes, and then dried for use.

[0036] Weigh a certain mass of H 2 IrCl 6 and Ce(NO 3 ) 3 Miscible with tetraethyl silicate, stand at room temperature for 2 hours.

[0037] Ce(NO 3 ) 3 、H 2 IrCl 6 The mixed solution of tetraethyl silicate and tetraethyl silicate is dissolved in a mixed solvent of n-butanol and isopropanol mixed in a ratio of 1:1 to obtain a coating solution. Ce(NO 3 ) 3 、H 2 IrCl 6 The molar concentrations of tetraethyl silicate and tetraethyl silicate were 0.042, 0.018 and 0.14mol / L, respectively.

[0038] The prepared coating solution was evenly coated on the surface of the pretreated titanium substrate with a brush, dried at 120°C for 15 minutes, then sintered at 500°C for 15 minutes, and cooled to room temperature after taking it out. A...

Embodiment 3

[0040] Example 3. First, a titanium plate of 10mm×10mm×1mm was washed with alkali at 60°C for 30 minutes, etched with 10% oxalic acid at 90°C for 2.5 hours, ultrasonically cleaned with deionized water for 10 minutes, and dried for later use.

[0041] Weigh a certain mass of H 2 IrCl 6 and Ce(NO 3 ) 3 Miscible with tetraethyl silicate, stand at room temperature for 2 hours.

[0042] Ce(NO 3 ) 3 、H 2 IrCl 6 The mixed solution of tetraethyl silicate and tetraethyl silicate is dissolved in a mixed solvent of n-butanol and isopropanol mixed in a ratio of 1:1 to obtain a coating solution. Ce(NO 3 ) 3 、H 2 IrCl 6 and tetraethyl silicate molar concentrations were 0.03, 0.03 and 0.14mol / L.

[0043] The prepared coating solution was evenly coated on the surface of the pretreated titanium substrate with a brush, dried at 120°C for 15 minutes, then sintered at 600°C for 15 minutes, and cooled to room temperature after taking it out. After the above steps were repeated 25 time...

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Abstract

The invention discloses a ternary composite oxide inert anode preparation method. Firstly, a titanium substrate is pretreated, and the pretreatment steps include alkali washing, oxalic acid etching, ultrasonic cleaning and drying; H2IrCl6 and Ce(NO3)3 are mixed and dissolved into tetraethyl orthosilicate according to the setting proportion, and solute needed by preparing a coating solution is obtained; a mixed solvent of n-butyl alcohol and isopropanol with the volume ratio being 1:1 is added into the prepared solute, and a coating solution is obtained; the prepared coating solution serves asa coating to be evenly coated on the surface of the titanium substrate obtained after pretreatment, and a ternary composite oxide inert anode is obtained after drying and sintering. The above preparing method is simple in process, and the prepared anode has the good oxygen evolution catalytic activity and the long service life, and is a hydrometallurgy anode with wire using prospect.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, in particular to a preparation method of a ternary composite oxide inert anode. Background technique [0002] At present, more than 80% of zinc and about 20% of copper in the world are extracted by hydrometallurgy. Oxygen evolution reaction, as the anode reaction of electrowinning nonferrous metals, plays an important role in the smelting process of nonferrous metals. In the electrowinning process, the anode is the place where the oxygen evolution reaction occurs, and its chemical composition and structure will directly affect the energy consumption of the nonferrous metal smelting process and the quality of the cathode product. The anodes used in the hydrometallurgical industry are mostly pure Pb and Pb-based alloy anodes. Although they have the advantages of easy processing, low cost and resistance to sulfuric acid corrosion, they also have the disadvantages of high power consumption an...

Claims

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Application Information

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IPC IPC(8): C25C7/02C23C18/12
Inventor 王成彦刘宝陈永强王硕
Owner 王成彦
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