Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/923706

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Title
Catalytic pyrolysis of CHF₃ over activated carbon and activated carbon supported potassium catalyst
Author/Creator
Han, Wenfeng;  Kennedy, Eric M.;  Liu, Huazhang;  Li, Ying;  Adesina, Adesoji A.;  Mackie, John C.;  Dlugogorski, Bogdan Z.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
Description
The catalytic activity of activated carbon (AC) and activated carbon supported potassium for the decomposition of CHF₃ was investigated at temperatures between 873 and 1173 K and at a space velocity of 4300 h⁻¹. It is found that activated carbon supported potassium shows high and relatively stable activity during the pyrolysis of CHF₃ under the conditions studied. Compared with the gas phase reaction, the conversion of CHF₃ increases by up to 10 times between 873 and 1123 K, with the major products being C₂F₄ and C₃F₆. Selectivities as high as 55% to C₂F₄ and 35% to C₃F₆ are achieved under optimum conditions. The main byproduct HF readily reacts with K₂O in the catalyst, converting the catalyst from K₂O/AC into KF/AC. Selectivity to the major products remains relatively constant following this transformation.
Relation
Journal of Fluorine Chemistry Vol. 131, Issue 6, p. 698-703
Publisher Link
http://dx.doi.org/10.1016/j.jfluchem.2010.03.002
Date
2010
Publisher
Elsevier
Keyword(s)
trifluoromethane;  greenhouse gas;  tetrafluoroethylene;  potassium;  activated carbon;  catalytic pyrolysis
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/923706
Identifier
ISSN:0022-1139
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Subject
"Journal of Fluorine Chemistry"
 
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