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A kind of heterogeneous photo-Fenton catalyst and its application

A catalyst and heterogeneous technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve cumbersome preparation steps, high energy consumption, unsatisfactory catalytic efficiency of catalysts, and pH application range And other issues

Active Publication Date: 2017-02-22
BEIJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of heterogeneous photo-Fenton catalyst and its application
  • A kind of heterogeneous photo-Fenton catalyst and its application
  • A kind of heterogeneous photo-Fenton catalyst and its application

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preparation example Construction

[0039] 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.

[0040] The preparation method of described MCM-41: take 4.8g CTAB (cetyltrimethylammonium bromide), join in 240ml deionized water of 40 ℃ and dissolve, add 20ml 25% concentrated ammonia water dropwise in the gained solution, 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 c...

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Abstract

The invention relates to a novel heterogeneous light fenton catalyst and application thereof, in particular to a goethite-graphene complex surface modified mesoporous carrier light fenton catalyst and an application thereof to catalyzing and removing organic pollutants in water. According to the novel heterogeneous light fenton catalyst provided by the invention, based on the combination of goethite, graphene and mesoporous carrier materials, the catalytic effect on the organic pollutants (particularly phenol, nitrogen-contained heterocyclic rings and the like) in the water is good, the application range of pH value is wide, the repeated practical performance is good, and the COD (chemical oxygen demands) and TOC (Total Organic Carbon) in wastewater can be simultaneously and effectively reduced.

Description

technical field [0001] The present invention relates to a novel heterogeneous photo-Fenton catalyst and its application, in particular to a mesoporous carrier photo-Fenton catalyst modified on the surface of a goethite-graphene complex and its catalytic method for removing organic pollutants in water use. 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 the range of pH 2.5 to 3.5 to have high catalytic activity), and There are also shortcomi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J35/10C02F1/72C02F101/34C02F101/38
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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