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A kind of metal oxide catalyst with composite material as carrier and its preparation method and application

A composite material and catalyst technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Excellent effect, stable catalytic performance, excellent adsorption performance

Active Publication Date: 2020-01-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the conventional sewage treatment process is often accompanied by high energy consumption and produces a large amount of greenhouse gases. At the same time, the huge organic chemical energy contained in COD in sewage is far from being tapped and utilized as a resource. Therefore, exploring the degradation of pollutants into energy The realization of carbon source energy is the way of water treatment with positive energy in the future

Method used

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  • A kind of metal oxide catalyst with composite material as carrier and its preparation method and application
  • A kind of metal oxide catalyst with composite material as carrier and its preparation method and application
  • A kind of metal oxide catalyst with composite material as carrier and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]First, add 10 g of chitosan powder, graphene oxide and epoxy resin with a molar ratio (mol:mol:mol) of 1:0.3:0.1 in the reaction vessel, and ultrasonically disperse in 20 ml of phosphorous acid solution of w=25% After dispersing for 45 minutes, add 2 g of sodium dodecylbenzenesulfonate and 2 g of EDTA as surfactants.

[0026] Catalyst 1: adding Ce(NO 3 ) 2 ·6H 2 O, Cu(NO 3 ) 2 ·3H 2 O in the reaction solution, wherein the mass percentage is (Cu(NO 3 ) 2 ·3H 2 O: Ce(NO 3 ) 2 ·6H 2 O: chitosan=0.5:0.5:100), stir evenly, add ethanol solution to the reaction solution, after reacting for 2h, add w=45% glutaraldehyde 45ml to crosslink for 0.5h, wash the precipitate, dry at 65°C Dry grinding to obtain CuO / CeO prepared by in-situ co-precipitation method 2 - Epoxy resin - Chitosan - Graphene oxide powder.

[0027] Catalyst 2: adding Ce(NO 3 ) 2 ·6H 2 O, Cu(NO 3 ) 2 ·3H 2 O in the reaction solution, wherein the mass percentage is (Cu(NO 3 ) 2 ·3H 2 O: Ce(NO ...

Embodiment 2

[0037] Catalyst 1: In a water bath at 65°C, add chitosan powder-graphene oxide-epoxy resin in total 10.0g, in which the molar ratio (mol:mol:mol) of the three reactants is 1:0.3:0.1, and ultrasonically disperse Disperse in 20ml of phosphorous acid solution of w=25% for 45min, add surfactant sodium dodecylbenzene sulfonate 2g and EDTA 2g, then add Ce(NO 3 ) 2 ·6H 2 O, Cu(NO 3 ) 2 ·3H 2 O in the reaction solution, control the mass ratio (Ce(NO 3 ) 2 ·6H 2 O: Cu(NO 3 ) 2 ·3H 2 O: Chitosan=3:3:100), stir evenly, add ethanol solution to the reaction solution, after reacting for 2 hours, add w=45% glutaraldehyde 45ml to cross-link for 0.5h, wash the precipitate, and dry at 65°C Dry grinding to obtain CuO / CeO prepared by in-situ co-precipitation method 2 - Epoxy resin - Chitosan - Graphene oxide powder.

[0038] The preparation of Catalyst 2 and Catalyst 3 is the same as that of Catalyst 1, except that the active component of Catalyst 2 is Fe(NO 3 ) 2 9H 2 O, Cu(NO 3 ...

Embodiment 3

[0045] Catalyst 1: In a water bath at 65°C, add chitosan powder-graphene oxide-epoxy resin in total 10.0g, in which the molar ratio (mol:mol:mol) of the three reactants is 1:0.3:0.1, and ultrasonically disperse Disperse in 20ml of phosphorous acid solution of w=25% for 45min, add surfactant dodecylbenzenesulfonic acid 2g and EDTA 2g, then add Ce(NO 3 ) 2 ·6H 2 O, Cu(NO 3 )2 ·3H 2 O in the reaction solution, control the mass ratio (Ce(NO 3 ) 2 ·6H 2 O: Cu(NO 3 ) 2 ·3H 2 O: Chitosan=3:3:100), stir evenly, add ethanol solution to the reaction solution, after reacting for 2 hours, add w=45% glutaraldehyde 45ml to cross-link for 0.5h, wash the precipitate, and dry at 65°C Dry grinding to obtain CuO / CeO prepared by in-situ co-precipitation method 2 - Epoxy resin - Chitosan - Graphene oxide powder.

[0046] The preparation method of catalyst 2 and catalyst 3 is roughly the same as that of catalyst 1, except that the molar ratio of chitosan powder-graphene oxide-epoxy resin...

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Abstract

The invention discloses a metallic oxide catalyst prepared by taking a composite material as a carrier as well as a preparation method and application of the metallic oxide catalyst. The catalyst is represented by CuO / CeO2-epoxy resin-chitosan-graphene oxide, wherein CuO / CeO2 is an active component, epoxy resin-chitosan-graphene oxide is the carrier, and the mass ratio of the active component CuO / CeO2 to chitosan is equal to (0.5-5.0) to (0.5-5) to 100. The active component of the catalyst is long in activity duration, stable in catalytic performance and good in catalytic effect, and can be used for degrading wastewater with high chemical oxygen demand (COD); the carrier has a large specific surface area, excellent absorption property and high mechanical strength and catalytic stability; the catalyst can be used for treating the wastewater which have the COD concentration of 3000-30000mg / L.

Description

technical field [0001] The invention relates to a catalyst and its preparation method and application, in particular to a catalyst for degrading sewage and its preparation method and application, which are used for the degradation of high COD sewage and the utilization of energy resources. Background technique [0002] Chitosan-graphene oxide composite material is a new type of composite biological material developed in recent years, which has unique mechanical properties, adsorption properties, electrochemical properties and antibacterial properties. Graphene is considered a "magic material" for its unique mechanical and electrical properties. In water treatment, graphene-like carbon materials have an important role in addition to its filtering function, which is adsorption. As a water treatment adsorbent, Adsorb metal ions and anionic dyes, etc. Chitosan is considered to be one of the most promising adsorbents for the removal of metal pollutants in wastewater, but its mec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J20/26B01J20/30C02F1/28C02F1/72C02F1/66C02F101/38
Inventor 吴敏孟徐王军如邵亚敏陈龙军孙岳明倪恨美马全红郑颖平
Owner SOUTHEAST UNIV
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