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Co-based supported catalyst for catalytic removal of benzene-series compounds in air and preparation method thereof

A technology of supported catalyst and benzene series, which is applied in the field of Co-based supported catalyst and its preparation, can solve the problems of high reaction temperature and low removal rate of benzene series, achieve good repeatability, good catalytic combustion activity, reduce cost effect

Active Publication Date: 2015-06-03
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the non-precious metal catalysts studied, the main problems are that the removal rate of benzene series is still low ( 300 ℃), which also limits the use of non-precious metal catalysts in air. Application of Catalytic Elimination of Benzene Series

Method used

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  • Co-based supported catalyst for catalytic removal of benzene-series compounds in air and preparation method thereof
  • Co-based supported catalyst for catalytic removal of benzene-series compounds in air and preparation method thereof
  • Co-based supported catalyst for catalytic removal of benzene-series compounds in air and preparation method thereof

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Effect test

Embodiment 1

[0023] The catalyst of this embodiment includes the active component Co 3 o 4 and carrier activated carbon, Co 3 o 4 The weight ratio with activated carbon is 2:8.

[0024] The preparation method of the catalyst of the present embodiment comprises the following steps:

[0025] 1) Press CO 3 o 4 The amount of cobalt nitrate was weighed and fully dissolved in distilled water, then 20~80 mesh activated carbon particles were impregnated in the obtained cobalt nitrate solution, evaporated to dryness at 70°C under constant stirring, and then dried at a constant temperature of 100°C for 24 h (The purpose of drying at a constant temperature of 100°C is to remove the crystal water in the raw material, and the drying time here is 10~24h, which can achieve the purpose of the invention) to obtain a dry material;

[0026] 2) The dry material prepared in step 1) was heated in a muffle furnace to 350° C. at a heating rate of 10° C. / min, and then calcined at a constant temperature of 35...

Embodiment 2

[0028] The catalyst of this embodiment includes the active component Co 3 o 4 and carrier activated carbon, Co 3 o 4 The weight ratio with activated carbon is 1:9.

[0029] The preparation method of the catalyst of this embodiment is the same as that of Example 1.

Embodiment 3

[0031] The catalyst of this embodiment includes the active component Co 3 o 4 and carrier activated carbon, Co 3 o 4 The weight ratio with activated carbon is 1.5:8.5.

[0032] The preparation method of the catalyst of this embodiment is the same as that of Example 1.

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Abstract

The invention discloses a Co-based supported catalyst for catalytic removal of benzene-series compounds in air and a preparation method thereof. The catalyst comprises an active component, namely Co3O4 and a carrier, namely activated carbon. The preparation method of the catalyst comprises the following steps of: 1) weighing a cobalt salt according to the amount of the Co3O4, fully dissolving in distilled water, further taking the activated carbon, soaking in an obtained cobalt salt solution, further distilling water to dryness, and performing drying treatment to prepare a dry material; and 2) roasting the dry material prepared in the step 1) in a Muffle furnace to prepare the catalyst. According to the catalyst disclosed by the invention, the activated carbon is taken as the carrier, and the oxide of non-precious metal cobalt, namely the Co3O4 is taken as the active component, so that the cost of the catalyst is greatly reduced; and furthermore, the catalyst disclosed by the invention shows good activity in catalyzing the combustion of the benzene-series compounds at a high reaction airspeed (66000mL.g<-1>-1.h<-1>) and within a low and narrow reaction temperature range.

Description

technical field [0001] The invention relates to a catalyst for catalytic combustion of benzene series, in particular to a Co-based loaded catalyst used for catalytic elimination of benzene series in air and a preparation method thereof. Background technique [0002] Volatile organic compounds (Volatile Organic Compounds—VOCs) waste gas is one of the main substances that cause air pollution. Even at low concentrations, it can cause serious harm to the environment and humans. Benzene series in these VOCs (such as, Benzene, benzene series, diphenyl series, etc.) are more harmful. Benzene series mainly come from industrial waste gas, and are the most common pollutants emitted by industries such as steel manufacturing, semiconductor component production, petrochemical, pharmaceutical, printing, shoemaking, and painting. Due to the volatile nature of benzene series, benzene series and diphenyl series are often used in interior decoration materials instead of pure benzene as solv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75F23G7/07
Inventor 谢红梅周桂林赵聪张海霞何小玲唐祖兰宋如意
Owner CHONGQING TECH & BUSINESS UNIV
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