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Method for preparing heterogeneous light Fenton catalyst

A catalyst and heterogeneous technology, applied in the direction of catalyst carriers, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of cumbersome preparation steps, high energy consumption, catalytic efficiency of catalysts, unsatisfactory pH application range, etc.

Inactive Publication Date: 2015-01-21
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

[0009] Most of the above disclosed prior art adopts high-temperature calcination or the loading method of binder to process graphene. people are satisfied

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  • Method for preparing heterogeneous light Fenton catalyst
  • Method for preparing heterogeneous light Fenton catalyst
  • Method for preparing heterogeneous light Fenton catalyst

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preparation example Construction

[0037] The r-Al 2 o 3 The preparation method is as follows: take a sufficient amount of spherical activated alumina, grind it with a pulverizer for 30 minutes, sieve the carrier particles with a particle size of 100 mesh to 200 mesh, wash with deionized water several times, and centrifuge the powdery solid particles obtained Dry in an oven at 105°C for 8-12 hours, and bake in a muffle furnace at 300-500°C for 1-3 hours, and dry the pretreated powder particle carrier for storage.

[0038] The preparation method of described MCM-41: get 4.8g CTAB (cetyltrimethylammonium bromide), join in 240ml deionized water of 40 ℃ and dissolve, in the gained solution, dropwise add 20ml25% concentrated ammonia water, Make the pH=10~11, add 20ml TEOS (tetraethyl orthosilicate) dropwise, stir vigorously at 360r / min for 4h, let the obtained milky white mixed suspension stand and age for 24~48h, filter to obtain the precipitate , dried in an oven at 105°C for 12h, ground into powder, and then ca...

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Abstract

The invention provides a preparation method of a novel heterogeneous light Fenton catalyst and particularly relates to a goethite-graphene complex surface modified mesoporous carrier light Fenton catalyst and an application of the catalyst to removal of organic pollutants in water by catalyzing. According to the heterogeneous light Fenton catalyst, goethite, graphene and a mesoporous carrier material are combined so that the catalytic effect on the organic pollutants (especially phenol, nitrogen heterocyclic rings and the like) in the water is very good; the pH applicable range is wide and the repeated utilization performance is good; and COD and TOC in wastewater can be simultaneously and effectively reduced.

Description

technical field [0001] The invention relates to a method for preparing a novel heterogeneous photo-Fenton catalyst, in particular, the invention relates to a method for preparing a photo-Fenton catalyst using a goethite-graphene complex to modify the surface of a mesoporous carrier. The invention also relates to the heterogeneous photo-Fenton catalyst prepared by the method of the invention. Background technique [0002] The Fenton reaction is often used in the treatment of refractory organic pollutants in water. The strong oxidizing OH active free radicals produced by the reaction can degrade and remove refractory organic pollutants in water and mineralize them into environmentally friendly CO 2 and H 2 O, is an environmentally friendly green catalytic process. The Fenton reaction is usually carried out in a homogeneous phase. Although the catalytic efficiency is high and the reaction is easy to control, it is demanding on the pH of the reaction system (usually only in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J29/03B01J32/00B01J35/10C02F1/30C02F101/34C02F101/38
CPCY02W10/37
Inventor 王颖方嘉声袁其朋陈晓春邓曹林余艳鸽
Owner BEIJING NORMAL UNIVERSITY
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