Iron-sulfur coupled catalyst capable of efficiently degrading high-concentration phenol, and preparation method and application of catalyst

A catalyst, high-concentration technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of low degradation efficiency of organic pollutants, low efficiency of Fenton degradation of pollutants, and iron ion dissolution rate. Low problems, to achieve the effect of easier control of the operation process, low cost, and reduced process cost
CN110420648AActive Publication Date: 2019-11-08SOUTH CHINA NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA NORMAL UNIVERSITY
Publication Date
2019-11-08

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Abstract

The invention belongs to the technical field of catalytic materials, and particularly relates to an iron-sulfur coupled catalyst capable of efficiently degrading high-concentration phenol, and a preparation method and application of the catalyst. The preparation method of the catalyst comprises the following steps: 1) preparing goethite; 2) mixing an iron-source material with deionized water, introducing nitrogen and carrying out stirring until the iron-source material is dissolved; 3) adding the goethite prepared in the step 1), continuously introducing nitrogen, and continuously carrying outstirring; and 4) adding a sulfide solution, continuously introducing nitrogen and continuously carrying out stirring, then carrying out centrifuging to remove the supernatant to obtain a solid, and carrying out vacuum freeze drying on the solid to obtain the iron-sulfur coupled catalyst. The catalyst can improve performance of a Fenton process system for treating organic pollutants and improve degradation efficiency on the organic pollutants. High-efficiency phenol degradation can be realized in a neutral or acidic environment, and cost of phenol treatment can be reduced. The novel high-efficiency Fenton reaction process system provided by the invention has an important application prospect.
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Description

technical field

[0001] The invention belongs to the technical field of catalytic materials, and in particular relates to an iron-sulfur coupling catalyst capable of efficiently degrading high-concentration phenol and its preparation method and application. Background technique

[0002] The reaction formula of the traditional Fenton technique is Fe 2+ +H 2 o 2 → Fe 3+ +OH - + OH, mainly relying on Fe 2+ React with a certain amount of hydrogen peroxide to produce strong oxidizing hydroxyl radicals to treat organic pollutants in water. And in such techniques, Fe 2+ Easily consumed and mostly converted to Fe with negligible effect on the Fenton system 3+ , from a certain point of view is a waste of resources, and its Fenton degradation efficiency of pollutants is low.

[0003] Goethite is an iron (hydr) oxide mineral that is abundant in the earth's crust. It can act as a catalyst to effectively degrade organic pollutants in the Fenton reaction process system. Because the...

Claims

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