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A kind of preparation method and application of copper-nickel composite oxide catalyst

A technology of composite oxides and catalysts, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, oxygen preparation, etc., can solve the problems of slow speed, high temperature and low efficiency for sodium hypochlorite decomposition problem, to achieve the effect of fast speed, overcome weak catalytic activity, and simple production and preparation process

Active Publication Date: 2015-11-25
UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the decomposition of sodium hypochlorite by copper and nickel oxides alone requires a higher temperature, and the speed is slow and the efficiency is low, which limits its application.

Method used

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  • A kind of preparation method and application of copper-nickel composite oxide catalyst
  • A kind of preparation method and application of copper-nickel composite oxide catalyst
  • A kind of preparation method and application of copper-nickel composite oxide catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Weigh 2.91g (0.01mol) Ni(NO 3 ) 2 ·6H 2 O and 2.42g (0.01mol) Cu(NO 3 ) 2 ·3H 2 O was dissolved in 100ml deionized water, weighed 1.8g (0.045mol) NaOH was dissolved in 100ml deionized water, and the NaOH solution was added to the Ni(NO 3 ) 3 with Cu(NO 3 ) 2 The mixed solution was stirred at room temperature for 8 hours to obtain a precursor solution.

[0024] (2) Add the precursor solution of step (1) into a 250ml hydrothermal reaction kettle, and conduct a hydrothermal reaction at 130°C for 10 hours, with a heating rate of 10°C / min.

[0025] (3) After the reaction of step (2) is completed, after the reaction solution is cooled naturally, the reaction solution is filtered, the product is washed with water, and after cleaning, the product obtained is dried in a drying oven at 100° C. for 8 hours to obtain a black product copper nickel composite oxide catalyst.

Embodiment 2

[0027] (1) Weigh 2.91g (0.01mol) Ni(NO 3 ) 2 ·6H 2 O and 2.42g (0.01mol) Cu(NO 3 ) 2 ·3H 2 O was dissolved in 100ml deionized water, weighed 1.8g (0.045mol) NaOH was dissolved in 100ml deionized water, and the NaOH solution was added to the Ni(NO 3 ) 3 with Cu(NO 3 ) 2 The mixed solution was stirred at room temperature for 8 hours to obtain a precursor solution.

[0028] (2) Add the precursor solution of step (1) into a 250ml hydrothermal reaction kettle, and conduct a hydrothermal reaction at 120°C for 10 hours, with a heating rate of 10°C / min.

[0029] (3) After the reaction of step (2) is completed, after the reaction solution is cooled naturally, the reaction solution is filtered, the product is washed with water, and after cleaning, the product obtained is dried in a drying oven at 100° C. for 8 hours to obtain a black product copper nickel composite oxide catalyst.

Embodiment 3

[0031] (1) Weigh 2.91g (0.01mol) Ni(NO 3 ) 2 .6H 2 O and 2.42g (0.01mol) Cu(NO 3 ) 2 ·3H 2 O was dissolved in 100ml deionized water, weighed 1.8g (0.045mol) NaOH was dissolved in 100ml deionized water, and the NaOH solution was added to the Ni(NO 3 ) 3 with Cu(NO 3 ) 2 The mixed solution was stirred at room temperature for 8 hours to obtain a precursor solution.

[0032] (2) Add the precursor solution of step (1) into a 250ml hydrothermal reaction kettle, and conduct a hydrothermal reaction at 140°C for 10 hours, with a heating rate of 10°C / min.

[0033] (3) After the reaction of step (2) is completed, after the reaction solution is cooled naturally, the reaction solution is filtered, the product is washed with water, and after cleaning, the product obtained is dried in a drying oven at 100° C. for 8 hours to obtain a black product copper nickel composite oxide catalyst.

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Abstract

The invention discloses a preparation method of a copper nickel composite oxide catalyst. The preparation method of the copper nickel composite oxide catalyst comprises the following steps: 1) mixing nickel salt, copper salt and strong alkali according to the feed intake mole ratio of 1:1:4.5, and dissolving into water so as to prepare a mixed water solution; 2) stirring the mixed water solution at room temperature for 6-10 hours so as to obtain a precursor solution; 3) warming the precursor solution to 120 DEG C-140 DEG C and reacting for 8-16 hours to obtain a reaction solution; 4) after reaction, cooling the reaction solution naturally to room temperature; 5) filtering the reaction solution so as to obtain a filtration substance; 6) cleaning and drying the filtration substance so as to obtain the copper nickel composite oxide catalyst. The catalytic performance of the copper nickel composite oxide catalyst prepared by the invention is improved greatly; the characteristic that the catalytic activity of a single structure is weak is overcome; meanwhile, the used raw materials are low in price; the production preparation technology is simple, and has the advantage of low cost; the copper nickel composite oxide catalyst has excellent catalytic decomposability to sodium hypochlorite, is high in decomposition efficiency, is high in speed, and can decompose sodium hypochlorite into harmless sodium chloride and oxygen.

Description

technical field [0001] The invention relates to a chemical catalyst, in particular to a preparation method and application of a copper-nickel composite oxide catalyst. Background technique [0002] Sodium hypochlorite (NaClO) is a widely used industrial raw material. Because it has strong oxidizing properties in acidic and weakly alkaline solutions, it is often used as a disinfectant and bleaching agent; sodium hypochlorite solution is used to treat wastewater, which can achieve oxidative decomposition Pollutants, bleaching, sterilization and deodorization purposes, but in the process of treatment, often because sodium hypochlorite is an unstable compound, it is prone to photodecomposition reaction at high temperature or under sunlight, and it is easy to generate NaClO 3 , NaCl, HCl, etc., which greatly reduce the utilization rate of the strong oxidizing properties of sodium hypochlorite. At the same time, the HCl gas generated during the decomposition process has caused gre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755A62D3/40C01B13/02C01D3/04A62D101/49
Inventor 倪宇杰黄建国
Owner UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD
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