Method for efficiently decomposing hydrogen peroxide by using graphene-coated cobalt catalyst under acidic condition
A technology of graphene coating and cobalt catalyst, which is applied in the field of materials chemistry, can solve the problems of increasing the difficulty of dissolution, separation and purification, recycling costs, oxidative damage of surface active groups, collapse of pore structure, etc., and achieves low raw material cost and good catalysis Performance, effect of preventing dissolution
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[0028] Example 1:
[0029] 291mg Co (NO 3 ) 2 .6h 2 O and 168.0 mg of diaminobiconitrile, which were dissolved in 40 ml of anhydrous ethanol, and the ultrasonic was allowed to dissolve, and then the diaminum male nitrile solution was poured into the cobalt solution of hexahydrate, mixed, and then The mixed solution was hot for 12 h at 135 ° C, cooled to room temperature and dried, and the dried solid was polished into a powder. The above powder was placed in a tube furnace under an AR atmosphere, heated at 2 ° C / min to 550 ° C, and held for 2 h. The resulting solid is dispersed in 2M h after nature cooling to room temperature. 2 SO 4In the medium, heated to 80 ° C for 2 h, filtered through heat, washed 3 times with deionized water, the filter cake was dried at 60 ° C for 12 h, and the resulting solid was Concon 4 / C catalyst.
[0030] CON 4 / C metal catalyst application:
[0031] Take 10g hydrogen peroxide reaction liquid (1M H 2 SO 4 About 10% wt is h 2 SO 4 And 1% WT h 2 O 2...
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[0033] Example 2:
[0034] According to the catalyst preparation conditions in Example 1, 10 g of the hydrogen peroxide reaction liquid (1 m h) was taken. 2 SO 4 About 10% wt is h 2 SO 4 And 1% WT h 2 O 2 The rest are water and trace impurities. In order to reduce H in this product 2 O 2 Content, 40mg con 4 / C metal catalyst was added thereto, and the reaction was stirred at room temperature for 2 h, and the sample was measured after the reaction was completed. 2 O 2 All partial solution, conversion rate is 100%.
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[0035] Example 3:
[0036] According to the catalyst preparation conditions in Example 1, 10 g of different acid concentrations (2 to 7 m h) were taken. 2 SO 4 The hydrogen peroxide reaction liquid, that is, therein, about 20% wt ~ 70% wt is h 2 SO 4 And 1% WT h 2 O 2 The rest are water and trace impurities. In order to reduce H in this product 2 O 2 Content, 40mg con 4 / C metal catalyst is added thereto, and the reaction is stirred at 60 ° C for 1 h, and each sample is measured after the reaction is completed. 2 O 2 All partial solution, conversion rate is 100%. It is shown that the catalyst prepared by the present invention can be efficiently decomposed in a strong acid environment. 2 O 2 .
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