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Atmospheric chemistry of HFC-134a: Kinetics of the decomposition of the alkoxy radical CF3CFHO

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Decomposition of the CF3CFHO radical formed in the reaction of CF3CFHO2 radicals with NO was studied at 296 and 393 K using a pulse radiolysis transient VIS-UV absorption absolute rate technique. At room temperature in 1 atmosphere of SF6 diluent it was found that the majority (79 ′ 20)% of CF3CFHO radicals formed in the CF3CFHO2 + NO reaction decompose within 3 μs via C - C bond scission. This result is discussed with respect to the current understanding of the atmospheric degradation of HFC-134a. As a part of the present work the rate constant ratio kCF3CFH+02/kCFSCFH+NO was determined to be 0.144 ′ 0.029 in one atmosphere of SF6 diluent at 296 K.

OriginalsprogEngelsk
TidsskriftInternational Journal of Chemical Kinetics
Vol/bind29
Udgave nummer3
Sider (fra-til)209-217
Antal sider9
ISSN0538-8066
DOI
StatusUdgivet - 1 jan. 1997

ID: 214271760