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Copper oxide/alumina composite catalyst and its preparation method and special micro-arc oxidation electrolyte

A composite catalyst, micro-arc oxidation technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Complex and high cost problems, to achieve the effect of low active substance dissolution rate, simple process and high production efficiency

Active Publication Date: 2016-04-20
SHAANXI HUAYIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These commonly used preparation methods have disadvantages such as complicated preparation process, high cost, poor binding force between active substance and carrier, and easy loss.

Method used

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  • Copper oxide/alumina composite catalyst and its preparation method and special micro-arc oxidation electrolyte
  • Copper oxide/alumina composite catalyst and its preparation method and special micro-arc oxidation electrolyte
  • Copper oxide/alumina composite catalyst and its preparation method and special micro-arc oxidation electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] First, weigh the following medicines (0.066mol / L) sodium phosphate, (0.034mol / L) sodium borate, (0.006mol / L) sodium tungstate and (0.005mol / L) sodium silicate, add deionized water to dilute Prepare the electrolyte solution, then add copper acetate (0.015mol / L) into the above solution, and stir evenly.

[0044] Put the pure aluminum sample to be treated in the electrolyte for micro-arc oxidation treatment, use the pure aluminum sample as the anode, and the stainless steel plate as the cathode, control the process parameters as shown in Table 1, and the pure aluminum sample can be The surface is formed with a thickness of about 5um and contains CuO / Al 2 o 3 catalytic membrane layer.

[0045]Table 1 Process parameters of pure aluminum micro-arc oxidation

[0046]

Embodiment 2

[0048] First, take the following medicines sodium hexametaphosphate 0.035mol / l, ammonium metavanadate 0.015mol / l, cobalt sulfate 0.005mol / l, sodium silicate 0.12mol / l, add deionized water to dilute the configuration electrolyte, and then Add copper acetate (0.015mol / L) into the above solution and stir evenly.

[0049] Place the pure aluminum sample to be treated in the electrolyte for micro-arc oxidation treatment, use the pure aluminum sample as the anode, and the stainless steel plate as the cathode, and control the process parameters as shown in Table 1 of Example 1, then the pure aluminum The surface of the aluminum sample is formed with a thickness of about 5um and contains CuO / Al 2 o 3 catalytic membrane layer.

Embodiment 3

[0051] First, weigh the following medicines (0.066mol / L) sodium phosphate, (0.034mol / L) sodium borate, (0.006mol / L) sodium tungstate and (0.005mol / L) sodium silicate, add deionized water to dilute Prepare the electrolyte solution, then add copper acetate (0.025mol / L) into the above solution, and stir evenly.

[0052] Put the pure aluminum sample to be treated in the electrolyte for micro-arc oxidation treatment, use the pure aluminum sample as the anode, and the stainless steel plate as the cathode, control the process parameters as shown in Table 2, and the pure aluminum sample can be The surface is formed with a thickness of about 10um and contains CuO / Al 2 o 3 catalytic membrane layer.

[0053] Table 2 Process parameters of pure aluminum micro-arc oxidation

[0054]

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PUM

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Abstract

The invention relates to the field of preparation of catalysts, and in particular to a copper oxide / aluminum oxide composite catalyst, and a preparation method and a special micro-arc oxidation electrolyte thereof. The preparation method of the copper oxide / aluminum oxide composite catalyst comprises the step of putting a pure aluminum sample into the micro-arc oxidation electrolyte including copper acetate to carry out micro-arc oxidation treatment, thus obtaining the copper oxide / aluminum oxide composite catalyst. The copper oxide / aluminum oxide composite catalyst and the preparation method and the special micro-arc oxidation electrolyte of the copper oxide / aluminum oxide composite catalyst have the advantages that the prepared copper oxide / aluminum oxide composite catalyst film layer is level and smooth in appearance, bonding strength between the active matter CuO and the carrier Al2O3 is good, and the active matter dissolution rate is low, so that the copper oxide / aluminum oxide composite catalyst can be repeatedly used for many times; compared with conventional methods, the copper oxide / aluminum oxide composite catalyst can be prepared by one step, so that the working procedure is reduced and the cost is saved.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a copper oxide / alumina composite catalyst, a preparation method thereof and a special micro-arc oxidation electrolyte. Background technique [0002] In recent years, the wet catalytic oxidation method is mainly used to treat high-concentration organic wastewater at home and abroad. This technology is to decompose the organic matter and other toxic substances containing N, S, etc. in the wastewater into CO under the action of a certain pressure, temperature and a certain amount of catalyst. 2 、H 2 O and other harmless substances, with high purification efficiency, no secondary pollution, simple process and so on. [0003] At present, micro-arc oxidation technology has developed rapidly due to its simple process, high efficiency, no pollution, and strong ability to process workpieces. Common wet catalytic oxidation non-noble metal catalysts are mainly based on γ-A1 2 o 3 as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/06B01J23/72
Inventor 刘东杰应忠芳郑建伟钟海玉
Owner SHAANXI HUAYIN TECH CO LTD
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