Preparation method of propane catalytic combustion composite oxide catalyst and application of catalyst

A composite oxide, catalytic combustion technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, combustion method, etc., to achieve the effect of low cost, good stability and complete combustion

Inactive Publication Date: 2018-04-24
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on propane catalytic combustion catalysts of cerium-cobalt composite oxides

Method used

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  • Preparation method of propane catalytic combustion composite oxide catalyst and application of catalyst
  • Preparation method of propane catalytic combustion composite oxide catalyst and application of catalyst
  • Preparation method of propane catalytic combustion composite oxide catalyst and application of catalyst

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Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1: the preparation method of propane catalytic combustion catalyst of the present invention

[0021] a. 4.3422g (0.01mol) Ce(NO 3 ) 3 ·6H 2 O was dissolved in 20 mL of deionized water to form solution A, and 3.1521 g of citric acid was dissolved in 10 mL of deionized water to form solution B.

[0022] b. Mix solution A and solution B, and stir in a water bath at 60°C for 1 hour to obtain solution C.

[0023] c. Put solution C on a rotary evaporator, heat to 60° C., and rotary evaporate for 90 minutes to obtain gel-like substance D.

[0024] d. Place the substance D in an oven at 90°C for 10 hours at a constant temperature.

[0025] e. Put the product of the above step d in a muffle furnace at 300° C. for 1 hour to decompose citric acid to obtain a dry powder.

[0026] f. Calcining the above dry powder in a muffle furnace at 550°C for 4h to obtain pure cerium oxide catalyst CeO 2 .

Embodiment 2

[0027] Embodiment 2: the preparation method of propane catalytic combustion catalyst of the present invention

[0028] a. 3.4738g (8mmol) Ce (NO 3 ) 3 ·6H 2 O and 0.5821g (2mmol) Co(NO 3 ) 2 ·6H 2 O (molar ratio Co / (Ce+Co)=20%) was dissolved in 20 mL of deionized water to form solution A, and 3.1521 g of citric acid was dissolved in 10 mL of deionized water to form solution B.

[0029] b. Mix solution A and solution B, and stir in a water bath at 60°C for 1 hour to obtain solution C.

[0030] c. Transfer solution C to a rotary evaporator, slowly heat to 60° C., and rotary evaporate for 90 minutes to obtain gel-like substance D.

[0031] d. Place the substance D in an oven at 90°C for 10 hours at a constant temperature.

[0032] e. Put the product of the above step d in a muffle furnace at 300° C. for 1 hour to decompose citric acid to obtain a dry powder.

[0033] f. Put the above dry powder in a muffle furnace at 550°C for 4 hours to obtain the cerium-cobalt composite...

Embodiment 3

[0034] Embodiment 3: Prepare the cerium-cobalt composite oxide catalyst with molar ratio Co / (Co+Ce)=50% according to the method of embodiment 2, denoted as CoCeO x -50.

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PUM

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Abstract

The invention belongs to the technical field of VOCs (volatile organic chemicals) catalytic combustion environment protection, and relates to a preparation method of a propane catalytic combustion composite oxide catalyst and an application of the catalyst. According to the preparation method of the catalyst, a cerium cobalt composite oxide is prepared by a citric acid method and can be applied topropane catalytic combustion reaction. The provided cerium cobalt composite oxide propane catalytic combustion catalyst is high in activity, good in stability and low in initiation temperature; complete combustion of low-concentration propane can be realized at lower temperature; compared with a precious metal catalyst, the catalyst is lower in cost; therefore, the catalyst has a potential application prospect in the aspect of industrial waste gas purification.

Description

technical field [0001] The invention belongs to the technical field of VOCs catalytic combustion environmental protection, and in particular relates to a preparation method and application of a propane catalytic combustion composite oxide catalyst. Background technique [0002] Volatile organic compounds (VOCs) are a class of pollutants that are ubiquitous in the atmosphere and have serious harm to human health and the ecological environment. Volatile organic compounds include aromatic hydrocarbons, alcohols, aldehydes, alkanes, etc., mainly produced in chemical and petrochemical industrial waste gas, gas storage tanks for petrochemical products, printing and paint production waste gas, wood dry distillation waste gas and pharmaceutical factory waste gas Wait. Propane, as one of the representatives of low-carbon alkanes, widely exists in industrial waste gas. For example, the concentration of propane or butane in the organic waste gas of the sewage treatment plant of refin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J37/03B01J37/08F23G7/07
CPCB01J23/002B01J23/83B01J37/036B01J37/082F23G7/07
Inventor 梁长海朱文军陈霄李闯
Owner DALIAN UNIV OF TECH
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