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

Trine E. Møgelberg; Jens Sehested; Timothy J. Wallington; Ole J. Nielsen

doi:10.1002/(SICI)1097-4601(1997)29:3<209::AID-KIN8>3.0.CO;2-Y

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

Trine E. Møgelberg, Jens Sehested^*, Timothy J. Wallington, Ole J. Nielsen

^*Corresponding author af dette arbejde

Kemisk Institut

17 Citationer (Scopus)

Abstract

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 k_CF3CFH+02/k_CFSCFH+NO was determined to be 0.144 ′ 0.029 in one atmosphere of SF₆ diluent at 296 K.

Originalsprog	Engelsk
Tidsskrift	International Journal of Chemical Kinetics
Vol/bind	29
Udgave nummer	3
Sider (fra-til)	209-217
Antal sider	9
ISSN	0538-8066
DOI	https://doi.org/10.1002/(SICI)1097-4601(1997)29:3<209::AID-KIN8>3.0.CO;2-Y
Status	Udgivet - 1 jan. 1997

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10.1002/(SICI)1097-4601(1997)29:3<209::AID-KIN8>3.0.CO;2-Y

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Citationsformater

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title = "Atmospheric chemistry of HFC-134a: Kinetics of the decomposition of the alkoxy radical CF3CFHO",

abstract = "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.",

author = "M{\o}gelberg, {Trine E.} and Jens Sehested and Wallington, {Timothy J.} and Nielsen, {Ole J.}",

year = "1997",

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T1 - Atmospheric chemistry of HFC-134a

T2 - Kinetics of the decomposition of the alkoxy radical CF3CFHO

AU - Møgelberg, Trine E.

AU - Sehested, Jens

AU - Wallington, Timothy J.

AU - Nielsen, Ole J.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - 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.

AB - 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.

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