- Title
- Catalytic pyrolysis of CHF₃ over activated carbon and activated carbon supported potassium catalyst
- Creator
- Han, Wenfeng; Kennedy, Eric M.; Liu, Huazhang; Li, Ying; Adesina, Adesoji A.; Mackie, John C.; Dlugogorski, Bogdan Z.
- 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
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2010
- 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.
- Subject
- trifluoromethane; greenhouse gas; tetrafluoroethylene; potassium; activated carbon; catalytic pyrolysis
- Identifier
- http://hdl.handle.net/1959.13/923706
- Identifier
- uon:9797
- Identifier
- ISSN:0022-1139
- Language
- eng
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