Characteristics of oxygen chemisorption on porous coal char

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Oxygen chemisorption on a porous coal char was investigated by a typical consecutive pyrolysis and chemisorption experiments in a thermogravimetic analyzer. Small amounts of carbon-oxygen surface complexes are gasified to CO and CO2 during the oxygen chemisorption at 423 K. The kinetic equation of oxygen chemisorption on porous char including gasification of surface oxides well represents the chemisorption/gasification behavior of oxygen on the coal char. The activation energy and the frequency factor for oxygen chemisorption on coal-char are found to be 57 kJ/mol and 9.16x10(6)/hr, respectively.
Publisher
KOREAN INST CHEM ENGINEERS
Issue Date
1999-03
Language
English
Article Type
Article
Keywords

MICROPOROUS CARBONS; KINETICS; GASIFICATION

Citation

KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.16, no.2, pp.175 - 179

ISSN
0256-1115
DOI
10.1007/BF02706833
URI
http://hdl.handle.net/10203/68640
Appears in Collection
CBE-Journal Papers(저널논문)
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