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Removal of SO 2 by Activated Carbon Fibre Impregnated with Transition Metals
Author(s) -
Gaur Vivekanand,
Sharma Ashutosh,
Verma Nishith
Publication year - 2007
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.5450850207
Subject(s) - transition metal , catalysis , monolayer , activated carbon , crystallite , metal , materials science , carbon fibers , chemical engineering , inorganic chemistry , chemistry , metallurgy , adsorption , composite material , organic chemistry , nanotechnology , composite number , engineering
Phenolic resin based activated carbon fibres (ACF) impregnated with oxides of various transition metals were investigated for the catalytic oxidation of SO 2 into H 2 SO 4 . Oxidation was carried out in the packed bed tubular reactor in the presence of O 2 and H 2 O. The activity of the various metals impregnated on ACF was observed to be in the order, Cu>Ni>Co>Cr. It was found that the metal oxides were dispersed as monolayer on ACF up to ∼5% (w/w) loading, beyond which crystallites formation occurred. A kinetic mechanism for the catalytic oxidation of SO 2 into H 2 SO 4 was proposed and incorporated in a transport model developed to explain the experimental breakthrough data.