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Simultaneous removal of SO 2 and NO by CO reduction over prevulcanized Fe 2 O 3 /AC catalysts
Author(s) -
Song Yongji,
Wang Ting,
Cheng Liang,
Li Cuiqing,
Wang Hong,
Wang Xincheng
Publication year - 2019
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23439
Subject(s) - catalysis , activated carbon , redox , carbon fibers , combustion , incipient wetness impregnation , selective catalytic reduction , denitrification , chemistry , cobalt , materials science , inorganic chemistry , chemical engineering , analytical chemistry (journal) , nitrogen , selectivity , environmental chemistry , adsorption , organic chemistry , composite material , engineering , composite number
Low‐cost Fe 2 O 3 modified activated carbon catalysts have been prepared by a facile incipient‐wetness impregnation method and used for the low‐temperature simultaneous catalytic reduction of SO 2 and NO by CO. The effect of CO, NO, and SO 2 was studied experimentally by transient response method. Removal efficiencies of 95 % for NO and 100 % for SO 2 were obtained, respectively, for the optimum catalyst, in which the amount of Fe 2 O 3 was 10 wt%. It was found that the catalyst was robust enough under SO 2 and NO circumstances; moreover, the prevulcanization of Fe atoms was found to be essential for high efficiency. The reaction mechanism of the simultaneous desulphurization and denitrification reactions of Fe 2 O 3 /AC was proposed to follow both redox and COS mechanisms. These results make activated carbon supported Fe 2 O 3 highly promising for the simultaneous abatement of SO 2 and NO emissions generated during the combustion processes.
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