Alkali-resistant performance ofV2O5-MoO3/ TiO2 catalyst modified by SiO2

SHEN Bo-xiong; MA Juan

Volume 40 Issue 02

Feb. 2012

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SHEN Bo-xiong, MA Juan. Alkali-resistant performance ofV2O5-MoO3/ TiO2 catalyst modified by SiO2[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 247-251.

Citation:

SHEN Bo-xiong, MA Juan. Alkali-resistant performance ofV₂O₅-MoO₃/ TiO₂ catalyst modified by SiO₂[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 247-251.

SHEN Bo-xiong, MA Juan. Alkali-resistant performance ofV2O5-MoO3/ TiO2 catalyst modified by SiO2[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 247-251.

Citation:

SHEN Bo-xiong, MA Juan. Alkali-resistant performance ofV₂O₅-MoO₃/ TiO₂ catalyst modified by SiO₂[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 247-251.

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Alkali-resistant performance ofV₂O₅-MoO₃/ TiO₂ catalyst modified by SiO₂

College of Environmental Science &|Engineering, Nankai University, Tianjin 300071, China

Received Date: 2011-02-19
Rev Recd Date: 2011-06-03
Publish Date: 2012-02-29

Abstract

Abstract

V₂O₅-MoO₃/ TiO₂catalyst was prepared by sol-gel and impregnation method and modified with SiO₂ to improve its alkali-resistant performance. The alkali poisoning was simulated by the immersion of the catalyst in alkali salt solution. The effect of SiO₂ modification on the de-NO_xactivity of V₂O₅-MoO₃/ TiO₂ catalyst in the selective catalytic reduction was investigated. BET, H₂-TPR and NH₃-TPD measurements indicated that the specific surface area, the redox ability (the reduction temperature is decreased by 10 ℃) and the acidity of the SiO₂-modified V₂O₅-MoO₃/TiO₂catalyst are increased obviously. As a result, the alkali-resistant performance of V₂O₅-MoO₃/ TiO₂ catalyst was improved largely by the SiO₂ modification.
- selective catalytic reduction,
- V₂O₅-MoO₃/ TiO₂,
- SiO₂ modification,
- alkali poisoning,
- de-NO_x

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References(20)

References

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