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A kind of magnetic graphene catalyst and its preparation method and application

A magnetic graphene and catalyst technology, applied in chemical instruments and methods, preparation of organic compounds, carboxylate preparation, etc., can solve the problems of high cost, low reuse rate, difficult recovery, etc., and achieve good magnetic properties, good Catalytic activity, convenient recycling effect

Inactive Publication Date: 2018-01-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the depletion of fossil resources and the gradual improvement of environmental protection awareness, the large-scale application and in-depth development of metal and its oxide catalysts in the petrochemical field are being limited by the shortcomings of many materials and application technology defects, such as high cost, difficult recycling, Low reuse rate, poor long-term stability, unclear reaction mechanism, complex structure and secondary pollution of metal ions

Method used

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  • A kind of magnetic graphene catalyst and its preparation method and application
  • A kind of magnetic graphene catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of SrCo by sol-gel method 0.8 Fe 0.2 o 3-δ powder:

[0035] (a) strontium nitrate (Sr(NO 3 ) 2 , Shanghai Xinbao Fine Chemical Factory, AR), cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O, Tianjin Kemiou Chemical Reagent Co., Ltd., AR), ferric nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 (0, Tianjin Fuchen Chemical Reagent Factory, AR) and deionized water were made into a solution according to the molar ratio of 5:4:1:10, stirred for 50min, and the stirring speed was 50r / min to obtain a mixed solution;

[0036] (b) Add EDTA (C 10 h 16 N 2 o 8 , Tianjin Kemiou Chemical Reagent Co., Ltd., AR), stirred for 50min (stirring speed is 50r / min), then added citric acid (C 6 h 8 o 7 ·H 2 (2, Sinopharm Group Chemical Reagent Co., Ltd., AR), continue to stir for 50min (stirring speed is 90r / min), obtain the mixed solution that precipitates; The mol ratio of total metal ion in the described EDTA and step (a) mixed solution is 1 : 1, the mol ratio of descr...

Embodiment 2

[0042] (1) Preparation of SrCo by sol-gel method 0.8 Fe 0.2 o 3-δ powder:

[0043] (a) strontium nitrate (Sr(NO 3 ) 2 , Shanghai Xinbao Fine Chemical Factory, AR), cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O, Tianjin Kemiou Chemical Reagent Co., Ltd., AR), ferric nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 (2, Tianjin Fuchen Chemical Reagent Factory, AR) and deionized water were made into solution according to the molar ratio of 5:4:1:15, stirred for 30min, and the stirring speed was 90r / min to obtain a mixed solution;

[0044] (b) Add EDTA (C 10 h 16 N 2 o 8 , Tianjin Kemiou Chemical Reagent Co., Ltd., AR), stirred for 30min, and the stirring speed was 90r / min; then added citric acid (C 6 h 8 o 7 ·H 2 (2, Sinopharm Group Chemical Reagent Co., Ltd., AR), continue to stir for 30min, and the stirring speed is 50r / min, obtains the mixed solution that precipitates; The mol ratio of described EDTA and the total metal ion in the mixed solution of step (a) is 1: 1. Th...

Embodiment 3

[0050] (1) Preparation of SrCo by sol-gel method 0.8 Fe 0.2 o 3-δ powder:

[0051] (a) strontium nitrate (Sr(NO 3 ) 2 , Shanghai Xinbao Fine Chemical Factory, AR), cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O, Tianjin Kemiou Chemical Reagent Co., Ltd., AR), ferric nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 (0, Tianjin Fuchen Chemical Reagent Factory, AR) and deionized water were made into solution according to the molar ratio of 5:4:1:12, stirred for 40min, and the stirring speed was 70r / min to obtain a mixed solution;

[0052] (b) Add EDTA (C 10 h 16 N 2 o 8 , Tianjin Kemiou Chemical Reagent Co., Ltd., AR), stirred for 40min, and the stirring speed was 70r / min; then added citric acid (C 6 h 8 o 7 ·H 2 (2, Sinopharm Group Chemical Reagent Co., Ltd., AR), continue to stir for 40min, and the stirring speed is 70r / min, obtains the mixed solution that precipitates; The mol ratio of described EDTA and step (a) mixed solution rising total metal ion is 1: 1. The molar...

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Abstract

The invention belongs to the technical field of industrial catalysis, and discloses a magnetic graphene catalyst, a preparation method and application thereof. The method is: (1) preparing SrCo0.8Fe0.2O3-δ powder by sol-gel method; (2) placing the SrCo0.8Fe0.2O3-δ powder in a tube furnace, feeding protective gas and heating; (3) change the gas that feeds, feed protective gas and hydrogen, reduce SrCo0.8Fe0.2O3 δ powder; (4) after the reduction reaction is completed, change the gas that feeds, feed protective gas, continue to heat up; Change the gas that is fed, feed protective gas, hydrogen and gas carbon source, and react at a constant temperature; after the constant temperature reaction is completed, change the gas that feeds, feed a protective gas, cool, and obtain a magnetic graphene catalyst. The catalyst has good magnetic properties, catalytic activity and convenient recovery.

Description

technical field [0001] The invention belongs to the technical field of industrial catalysis, relates to an electrocatalyst, in particular to a magnetic graphene catalyst and its preparation method and application. Background technique [0002] In the modern petrochemical industry, metals and their oxides play a vital role. They are not only the basic active components of catalytic materials in most alkane hydrogenation and dehydrogenation reactions, but also oxidation catalytic materials in the deep processing of petrochemical products. main active ingredient [1] . However, with the depletion of fossil resources and the gradual improvement of environmental protection awareness, the large-scale application and in-depth development of metal and its oxide catalysts in the petrochemical field are being limited by the shortcomings of many materials and application technology defects, such as high cost, difficult recycling, Low reuse rate, poor long-term stability, unclear react...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78C07C55/14C07C51/215
Inventor 方利国周灵怡
Owner SOUTH CHINA UNIV OF TECH