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Surface modification of cordierite support for V_2O_5-WO_3/SiO_2 catalysts of reducing NO

Hao Shu-fu

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Abstract

Cordierite was modified with silica sol and V2O5-WO3/SiO2 catalysts supported on modified cordierite were then prepared. The effects of microwave heating method and addition of hexamethylenetetramine on the surface modification of cordierite and the activities of V2O5-WO3/SiO2/cordierite catalysts were investigated. The results showed that improvement of the surface morphology of cordierite and the increase of specific surface area and average pore diameter were due to the introduction of hexamethylenetetramine and the use of microwave heating method. The specific surface area and average pore diameter reached 72.13 m2·g-1 and 9.14 nm, respectively. The maximum conversion of NO was 81.5% at reaction temperature range of (350-400) ℃.

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What this paper is about

Cordierite was modified with silica sol and V2O5-WO3/SiO2 catalysts supported on modified cordierite were then prepared. The effects of microwave heating method and addition of hexamethylenetetramine on the surface modification of cordierite and the activities of V2O5-WO3/SiO2/cordierite catalysts were investigated. The results showed that improvement of the surface morphology of cordierite and the increase of specific surface area and average pore diameter were due to the introduction of hexamethylenetetramine and the use of microwave heating method. The specific surface area and average pore diameter reached 72.13 m2·g-1 and 9.14 nm, respectively. The maximum conversion of NO was 81.5% at reaction temperature range of (350-400) ℃.

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Available abstract

Cordierite was modified with silica sol and V2O5-WO3/SiO2 catalysts supported on modified cordierite were then prepared. The effects of microwave heating method and addition of hexamethylenetetramine on the surface modification of cordierite and the activities of V2O5-WO3/SiO2/cordierite catalysts were investigated. The results showed that improvement of the surface morphology of cordierite and the increase of specific surface area and average pore diameter were due to the introduction of hexamethylenetetramine and the use of microwave heating method. The specific surface area and average pore diameter reached 72.13 m2·g-1 and 9.14 nm, respectively. The maximum conversion of NO was 81.5% at reaction temperature range of (350-400) ℃.

Key concepts: Cordierite, Hexamethylenetetramine, Catalysis, Materials science, Chemical engineering, Surface modification, Specific surface area, Inorganic chemistry

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Surface modification of cordierite support for V_2O_5-WO_3/SiO_2 catalysts of reducing NO — Research Paper | ScholarLens