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Preparation method of mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst and mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst and application thereof

A catalyst, carbon-silicon technology, used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor activity, low stability, low utilization rate, etc. Stable, good removal effect

Inactive Publication Date: 2019-01-04
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the prior art, one of the purposes of the present invention is to provide a method for preparing a mesoporous cobalt-based carbon-silicon nanosphere Fenton catalyst, by which a novel mesoporous cobalt-based carbon-silicon nanosphere Fenton catalyst is prepared. Fenton catalysts, to solve the existing heterogeneous Fenton catalysts generally have poor activity, low stability and H 2 o 2 low utilization etc.
[0006] The second object of the present invention is to provide a mesoporous cobalt-based carbon-silicon nanosphere Fenton catalyst to overcome the poor activity, low stability and H 2 o 2 low utilization etc.
[0007] The third object of the present invention is to provide an application of a mesoporous cobalt-based carbon-silicon nanosphere Fenton catalyst in the catalytic degradation of organic pollutants, so as to solve the problem of the existing heterogeneous Fenton catalysts in degrading organic pollutants in water. Poor, low stability and H 2 o 2 low utilization etc.

Method used

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  • Preparation method of mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst and mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst and application thereof
  • Preparation method of mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst and mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst and application thereof
  • Preparation method of mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst and mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of the first mixed solution step: take 0.2g / L soluble cobalt compound aqueous solution (wherein, the soluble cobalt compound aqueous solution is cobalt nitrate solution) 100ml and mix with 10g / L CTAB ethanol solution 30ml, stir for 15min, and continue stirring for 1.5h Add organosilicon solvent (wherein, organosilicon solvent is tetramethyl orthosilicate). After the organosilicon solvent is added, the calculated ratio of the amount of Si element in the organosilicon solvent to the amount of Co element in the soluble cobalt compound is 25:1. Then, 3 ml of aqueous ammonia having a mass fraction of 8% was added dropwise to the mixed system, and stirred for 24 hours while adding the aqueous ammonia dropwise, to obtain a first mixed solution.

[0041] The step of preparing the solid product: transfer the first mixed solution to a constant temperature water bath at 65° C. and stir for 0.5 h at a stirring speed of 600 r / min. The stirred first mixed solution was th...

Embodiment 2

[0044] Step of preparing the first mixed solution: take 100ml of 0.4g / L soluble cobalt compound aqueous solution (wherein, the soluble cobalt compound aqueous solution is cobalt sulfate solution) and mix with 100ml of 18g / L CTAB ethanol solution, stir for 2min, and continue stirring for 2.5h Add organosilicon solvent (wherein, organosilicon solvent is methyl silicone oil). After the organosilicon solvent is added, the calculated ratio of the amount of Si element in the organosilicon solvent to the amount of Co element in the soluble cobalt compound is 50:1. Add 5ml of aqueous ammonia with a mass fraction of 10% dropwise to the mixed system, and stir for 16 hours while adding the aqueous ammonia dropwise to prepare the first mixed solution.

[0045] The step of preparing the solid product: transfer the first mixed solution to a constant temperature water bath at 70° C. and stir for 1.5 h at a stirring speed of 550 r / min. The stirred first mixed solution was then transferred to...

Embodiment 3

[0048] Step of preparing the first mixed solution: take 100ml of 0.53g / L soluble cobalt compound aqueous solution (wherein the soluble cobalt compound aqueous solution is cobalt chloride solution) and mix with 75ml of 15g / L CTAB ethanol solution, stir for 7min, and continue stirring for 3h Add organosilicon solvent (wherein, organosilicon solvent is tetraethyl orthosilicate). After the organosilicon solvent is added, the calculated ratio of the amount of Si element in the organosilicon solvent to the amount of Co element in the soluble cobalt compound is 100:1. Then, 8 ml of aqueous ammonia having a mass fraction of 12% was added dropwise to the mixed system, and stirred for 8 hours while adding the aqueous ammonia dropwise, to obtain a first mixed solution.

[0049] The step of preparing the solid product: transfer the first mixed solution to a 75°C constant temperature water bath and stir for 0.75h at a stirring speed of 450r / min. The stirred first mixed solution was then t...

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Abstract

The invention discloses a preparation method of a mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst. The method comprises the steps of first mixing solution preparation, solid productpreparation and roasting. The invention further discloses the mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst and the application of the mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst in catalytic degradation of organic pollutants. The mesoporous cobalt-system carbon-silicon nanosphere Fenton catalyst prepared by means of the method has the advantages of high catalytic activity, high stability, convenient recovery and recycling and the like.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a method for preparing a mesoporous cobalt-based carbon-silicon nanosphere Fenton catalyst and a mesoporous cobalt-based carbon-silicon nanosphere Fenton catalyst prepared by the method for preparing the mesoporous cobalt-based carbon-silicon nanosphere Fenton catalyst. A cobalt-based carbon-silicon nanosphere Fenton catalyst and an application of the mesoporous cobalt-based carbon-silicon nanosphere Fenton catalyst in the technical field of water treatment. Background technique [0002] In recent years, with the rapid development of industry and the acceleration of urbanization, water pollution has become increasingly serious, which has seriously threatened the ecological environment and human life and health. As a typical representative of advanced oxidation technology, heterogeneous Fenton reaction has attracted extensive attention due to its efficient function of degr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22B01J35/08B01J35/10B01J37/10C02F1/72C02F101/34C02F101/36
CPCC02F1/722C02F1/725B01J27/22B01J37/10C02F2305/026C02F2101/36C02F2101/345C02F2101/306C02F2101/308B01J35/23B01J35/51B01J35/617
Inventor 吕来胡春张雪健张平
Owner GUANGZHOU UNIVERSITY
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