Mechanism of SO2 Influence on NO Removal over V2O5/AC Catalyst

Chinese Journal of Catalysis ›› 2008, Vol. 29 ›› Issue (1): 81-85.

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Mechanism of SO2 Influence on NO Removal over V2O5/AC Catalyst

XIAO Yong1,2, LIU Zhenyu1,3*, LIU Qingya3, WANG Jiancheng1,2, XING Xinyan1,2, HUANG Zhanggen1,2

1 State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, The Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 3 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:2008-01-25 Online:2008-01-25 Published:2011-12-25

Abstract

Abstract: O2 and SO2 transient response experiments were carried out to study the influence of SO2 on NO removal over the V2O5/AC (activated coke) catalyst in the presence of H2O. VOSO4 formed in the reaction of SO2 with V2O5 resulted in the decrease in NO removal activity of the V2O5/AC catalyst. The amount of VOSO4 in the catalyst was affected by both SO2 concentration and the amount of SO2 that was captured. Micropores of the V2O5/AC catalyst were favorable for the migration and deposition of SO3 and therefore benefited the NO removal over the catalyst.

Key words: oxygen, sulfur dioxide, vanadium oxide, activated coke, supported catalyst, nitrogen oxide

XIAO Yong;LIU Zhenyu;*;LIU Qingya;WANG Jiancheng;XING Xinyan;HUANG Zhanggen;. Mechanism of SO2 Influence on NO Removal over V2O5/AC Catalyst[J]. Chinese Journal of Catalysis, 2008, 29(1): 81-85.

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Mechanism of SO2 Influence on NO Removal over V2O5/AC Catalyst

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