Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/923715

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Title
Conversion of CHF₃ to CH₂=CF₂ via reaction with CH₄ in the presence of CBrF₃: an experimental and kinetic modelling study
Author/Creator
Han, Wenfeng;  Kennedy, Eric M.;  Mackie, John C.;  Dlugogorski, Bogdan Z.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
Description
Gas-phase reaction of CHF₃ (HFC 23) with CH₄ in the presence of CBrF₃ (halon 1301) to produce CH₂=CF₂ (VDF) is presented. Experiments were carried out in a plug-flow reactor at temperatures between 873 and 1173 K. Under these conditions, CH₂=CF₂ was a dominant product observed, with CH₂F₂, C₂H₂, CH₂CHF, C₂F₄, C₂H₆ and CHFCF₂ also detected. In the presence of less than 6000 ppm of CBrF₃, the rate of formation of CH₂=CF₂ is significantly enhanced, and a much lower rate of formation of the major by-product, C₂F₄ is observed. Further increasing the proportion of CBrF₃ in the feed resulted in an even higher rate of formation of CH₂=CF₂. Experimental results are fitted very well by a model derived from the NIST and GRI-Mech 3.0 mechanisms, modified to include additional published kinetic data.
Relation
Journal of Hazardous Materials Vol. 180, Issue 1-3, p. 181-187
Publisher Link
http://dx.doi.org/10.1016/j.jhazmat.2010.04.011
Date
2010
Publisher
Elsevier
Keyword(s)
trifluoromethane;  greenhouse gas;  methane;  halon;  vinylidene fluoride;  hydrofluorocarbon
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/923715
Identifier
ISSN:0304-3894
Reviewed
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Subject
"Journal of Hazardous Materials"
 
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