Rate constants for the gas-phase reactions of OH radicals with CH3CHF2 and CHC12CF3 over the temperature range 295-388 K

Ole J. Nielsen

doi:10.1016/0009-2614(91)90427-B

Rate constants for the gas-phase reactions of OH radicals with CH₃CHF₂ and CHC1₂CF₃ over the temperature range 295-388 K

Ole J. Nielsen^*

^*Corresponding author af dette arbejde

11 Citationer (Scopus)

Abstract

Rate constants for the reactions of OH radicals with CH₃CHF₂ and CHC1₂CF₃ have been determined overthe temperature range 295-388 K and a total pressure of 1 atm. The OH rate data were obtained using the absolute rate technique of pulse radiolysis combined with kinetic spectroscopy. The data can be fit to the Arrhenius expressions: k_OH+HFC-152a=3.9 × 10^-12 exp[(-1370±260)/T] cm³ molecule^-1s^-1 and k_OH+HCF-123=1.1 × 10^-12 × exp[(-940±200/T] cm³ molecule^-1s^-1. The results are compared to the available literature data and discussed in terms of reactivity trends and in the light of the important role CH₃CHF₂ and CHCl₂CF₃ play as alternatives to the fully halogenated chlorofluorocarbons.

Originalsprog	Engelsk
Tidsskrift	Chemical Physics Letters
Vol/bind	187
Udgave nummer	3
Sider (fra-til)	286-290
Antal sider	5
ISSN	0009-2614
DOI	https://doi.org/10.1016/0009-2614(91)90427-B
Status	Udgivet - 6 dec. 1991

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Citationsformater

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title = "Rate constants for the gas-phase reactions of OH radicals with CH3CHF2 and CHC12CF3 over the temperature range 295-388 K",

abstract = "Rate constants for the reactions of OH radicals with CH3CHF2 and CHC12CF3 have been determined overthe temperature range 295-388 K and a total pressure of 1 atm. The OH rate data were obtained using the absolute rate technique of pulse radiolysis combined with kinetic spectroscopy. The data can be fit to the Arrhenius expressions: kOH+HFC-152a=3.9 × 10-12 exp[(-1370±260)/T] cm3 molecule-1s-1 and kOH+HCF-123=1.1 × 10-12 × exp[(-940±200/T] cm3 molecule-1s-1. The results are compared to the available literature data and discussed in terms of reactivity trends and in the light of the important role CH3CHF2 and CHCl2CF3 play as alternatives to the fully halogenated chlorofluorocarbons.",

author = "Nielsen, {Ole J.}",

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TY - JOUR

T1 - Rate constants for the gas-phase reactions of OH radicals with CH3CHF2 and CHC12CF3 over the temperature range 295-388 K

AU - Nielsen, Ole J.

PY - 1991/12/6

Y1 - 1991/12/6

N2 - Rate constants for the reactions of OH radicals with CH3CHF2 and CHC12CF3 have been determined overthe temperature range 295-388 K and a total pressure of 1 atm. The OH rate data were obtained using the absolute rate technique of pulse radiolysis combined with kinetic spectroscopy. The data can be fit to the Arrhenius expressions: kOH+HFC-152a=3.9 × 10-12 exp[(-1370±260)/T] cm3 molecule-1s-1 and kOH+HCF-123=1.1 × 10-12 × exp[(-940±200/T] cm3 molecule-1s-1. The results are compared to the available literature data and discussed in terms of reactivity trends and in the light of the important role CH3CHF2 and CHCl2CF3 play as alternatives to the fully halogenated chlorofluorocarbons.

AB - Rate constants for the reactions of OH radicals with CH3CHF2 and CHC12CF3 have been determined overthe temperature range 295-388 K and a total pressure of 1 atm. The OH rate data were obtained using the absolute rate technique of pulse radiolysis combined with kinetic spectroscopy. The data can be fit to the Arrhenius expressions: kOH+HFC-152a=3.9 × 10-12 exp[(-1370±260)/T] cm3 molecule-1s-1 and kOH+HCF-123=1.1 × 10-12 × exp[(-940±200/T] cm3 molecule-1s-1. The results are compared to the available literature data and discussed in terms of reactivity trends and in the light of the important role CH3CHF2 and CHCl2CF3 play as alternatives to the fully halogenated chlorofluorocarbons.

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U2 - 10.1016/0009-2614(91)90427-B

DO - 10.1016/0009-2614(91)90427-B

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

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