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Sulfur resistant catalyst for low temperature catalytic combustion of VOCs and preparation method thereof

A low-temperature catalysis and catalyst technology, which is applied in the direction of combustion methods, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems restricting large-scale production and application, and achieve good VOCs catalytic decomposition ability, good catalytic stability, good Effect of sulfur resistance characteristics

Active Publication Date: 2018-05-18
南通斐腾新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned preparation method adopts the hydrothermal method, which still restricts its large-scale production application

Method used

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  • Sulfur resistant catalyst for low temperature catalytic combustion of VOCs and preparation method thereof
  • Sulfur resistant catalyst for low temperature catalytic combustion of VOCs and preparation method thereof
  • Sulfur resistant catalyst for low temperature catalytic combustion of VOCs and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of the present embodiment comprises the following steps:

[0022] A. Weigh a certain amount of CeZr powder and add ethanol and ammonia water, stir to obtain mixed solution A;

[0023] B, under vigorous stirring condition, drop mixed solution B in above-mentioned mixed solution, obtain mixed solution C; Described mixed solution B is the ethanol solution containing Si source, Ti source; The atomic ratio of CeZr, Si, Ti is 60 :3:2;

[0024] C. The mixture C was stirred for 1 hour, then heated to 80°C and aged for 2 hours to obtain the wrapped CeZr@SiTi slurry. After suction filtration, the filter cake was directly dried at 110°C, and then ground into powder to obtain powder CeZr @SiTi;

[0025] D. Add the obtained CeZr@SiTi powder and a certain amount of noble metal salt into ethylene glycol, stir for 1 hour, adjust the pH value to 13, then raise the temperature to 145°C and stir for 5 hours, cool to room temperature, and then adjust the solution w...

Embodiment 2

[0030] The preparation method of the present embodiment comprises the following steps:

[0031] A. Weigh a certain amount of CeZr powder and add ethanol and ammonia water, stir to obtain mixed solution A;

[0032] B, under vigorous stirring condition, drop mixed solution B in above-mentioned mixed solution, obtain mixed solution C; Described mixed solution B is the ethanol solution that contains Si source, Ti source; The atomic ratio of CeZr, Si, Ti is 95 :25:15;

[0033] C. The mixture C was stirred for 1 hour, then heated to 80°C and aged for 2 hours to obtain the wrapped CeZr@SiTi slurry. After suction filtration, the filter cake was directly dried at 110°C, and then ground into powder to obtain powder CeZr @SiTi;

[0034] D. Add the obtained CeZr@SiTi powder and a certain amount of noble metal salt into ethylene glycol, stir for 1 hour, adjust the pH value to 13, then raise the temperature to 145°C and stir for 5 hours, cool to room temperature, and then adjust the solut...

Embodiment 3

[0039] The preparation method of the present embodiment comprises the following steps:

[0040] A. Weigh a certain amount of CeZr powder and add ethanol and ammonia water, stir to obtain mixed solution A;

[0041] B, under vigorous stirring condition, drop mixed solution B in above-mentioned mixed solution, obtain mixed solution C; Described mixed solution B is the ethanol solution containing Si source, Ti source; The atomic ratio of CeZr, Si, Ti is 70 :14:9;

[0042] C. The mixture C was stirred for 1 hour, then heated to 80°C and aged for 2 hours to obtain the wrapped CeZr@SiTi slurry. After suction filtration, the filter cake was directly dried at 110°C, and then ground into powder to obtain powder CeZr @SiTi;

[0043] D. Add the obtained CeZr@SiTi powder and a certain amount of noble metal salt into ethylene glycol, stir for 1 hour, adjust the pH value to 13, then raise the temperature to 145°C and stir for 5 hours, cool to room temperature, and then adjust the solution ...

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Abstract

The invention discloses a sulfur resistant catalyst for low temperature catalytic combustion of VOCs and a preparation method thereof. The catalyst uses a silicon titanium compound oxide modified cerium zirconium solid solution as the base carrier, and carries the noble metal particles synthesized by ethylene glycol reduction method are loaded by impregnation, and finally the VOCs catalytic oxidation catalyst is obtained. The composite catalyst prepared by the method provided by the invention has good catalytic activity on VOCs, can withstand high temperature impact and has good sulfur resistance and other advantages.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a catalyst for low-temperature catalytic combustion of sulfur-resistant VOCs and a preparation method thereof. Background technique [0002] Volatile organic compounds (VOCs) are causing more and more serious damage to the environment and human health. The catalytic combustion method can burn VOCs at a lower temperature without flames and finally convert them into CO 2 and H 2 O and other harmless substances are currently the safest and most widely used VOCs purification technology. At present, catalysts for VOCs treatment mainly use noble metals (Pd, Pt, Ru, etc.) 2 、H 2 Sulfur-containing substances such as S put forward higher requirements for the sulfur-resistant stability of noble metal catalysts. [0003] CeZr solid solution is an excellent carrier because of its unique crystal structure, strong oxygen storage capacity and thermal stability, but its anti-su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/63F23G7/07
CPCB01J23/63F23G7/07F23G2209/14
Inventor 邱雁强吴子豹王斐
Owner 南通斐腾新材料科技有限公司
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