Mechanistic study of the gas-phase reaction of CH2FO2 radicals with HO2

Timothy J. Wallington; Michael D. Hurley; William F. Schneider; Jens Sehested; Ole John Nielsen

doi:10.1016/0009-2614(93)E1466-T

Mechanistic study of the gas-phase reaction of CH₂FO₂ radicals with HO₂

Timothy J. Wallington^*, Michael D. Hurley, William F. Schneider, Jens Sehested, Ole John Nielsen

^*Corresponding author af dette arbejde

42 Citationer (Scopus)

Abstract

Fourier transform infrared spectroscopy was used to identify CH₂FOOH and HC(O)F as products of the gas-phase reaction of CH₂FO₂ radicals with HO₂ radicals. At 700 Torr and 295 ± 2 K, branching ratios for the CH₂FOOH forming channel, k_1a/k₁=0.29 ± 0.08 and the HC(O)F channel, k_1b/k₁=0.71 ± 0.11 were established. Quoted errors are 2 standard deviations together with our estimate of systematic uncertainties. This result is discussed with respect to previous literature data and to computer models of atmospheric chemistry. As part of this work, the reactivity of Cl atoms towards CH₂FCl and CH₂FOOH was investigated; rate constants of k(Cl + CH₂FCl) = (1.1 ± 0.1) × 10^-13 and k(Cl + CH₂FOOH) = (1.5 ± 0.5) × 10^-13 cm³ molecule^-1 s^-1 were determined.

Originalsprog	Engelsk
Tidsskrift	Chemical Physics Letters
Vol/bind	218
Udgave nummer	1-2
Sider (fra-til)	34-42
Antal sider	9
ISSN	0009-2614
DOI	https://doi.org/10.1016/0009-2614(93)E1466-T
Status	Udgivet - 4 feb. 1994

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Citationsformater

@article{b381b1fc0b4e4f97bb6da00f89332973,

title = "Mechanistic study of the gas-phase reaction of CH2FO2 radicals with HO2",

abstract = "Fourier transform infrared spectroscopy was used to identify CH2FOOH and HC(O)F as products of the gas-phase reaction of CH2FO2 radicals with HO2 radicals. At 700 Torr and 295 ± 2 K, branching ratios for the CH2FOOH forming channel, k1a/k1=0.29 ± 0.08 and the HC(O)F channel, k1b/k1=0.71 ± 0.11 were established. Quoted errors are 2 standard deviations together with our estimate of systematic uncertainties. This result is discussed with respect to previous literature data and to computer models of atmospheric chemistry. As part of this work, the reactivity of Cl atoms towards CH2FCl and CH2FOOH was investigated; rate constants of k(Cl + CH2FCl) = (1.1 ± 0.1) × 10-13 and k(Cl + CH2FOOH) = (1.5 ± 0.5) × 10-13 cm3 molecule-1 s-1 were determined.",

author = "Wallington, {Timothy J.} and Hurley, {Michael D.} and Schneider, {William F.} and Jens Sehested and Nielsen, {Ole John}",

year = "1994",

month = feb,

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doi = "10.1016/0009-2614(93)E1466-T",

language = "English",

volume = "218",

pages = "34--42",

journal = "Chemical Physics Letters",

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TY - JOUR

T1 - Mechanistic study of the gas-phase reaction of CH2FO2 radicals with HO2

AU - Wallington, Timothy J.

AU - Hurley, Michael D.

AU - Schneider, William F.

AU - Sehested, Jens

AU - Nielsen, Ole John

PY - 1994/2/4

Y1 - 1994/2/4

N2 - Fourier transform infrared spectroscopy was used to identify CH2FOOH and HC(O)F as products of the gas-phase reaction of CH2FO2 radicals with HO2 radicals. At 700 Torr and 295 ± 2 K, branching ratios for the CH2FOOH forming channel, k1a/k1=0.29 ± 0.08 and the HC(O)F channel, k1b/k1=0.71 ± 0.11 were established. Quoted errors are 2 standard deviations together with our estimate of systematic uncertainties. This result is discussed with respect to previous literature data and to computer models of atmospheric chemistry. As part of this work, the reactivity of Cl atoms towards CH2FCl and CH2FOOH was investigated; rate constants of k(Cl + CH2FCl) = (1.1 ± 0.1) × 10-13 and k(Cl + CH2FOOH) = (1.5 ± 0.5) × 10-13 cm3 molecule-1 s-1 were determined.

AB - Fourier transform infrared spectroscopy was used to identify CH2FOOH and HC(O)F as products of the gas-phase reaction of CH2FO2 radicals with HO2 radicals. At 700 Torr and 295 ± 2 K, branching ratios for the CH2FOOH forming channel, k1a/k1=0.29 ± 0.08 and the HC(O)F channel, k1b/k1=0.71 ± 0.11 were established. Quoted errors are 2 standard deviations together with our estimate of systematic uncertainties. This result is discussed with respect to previous literature data and to computer models of atmospheric chemistry. As part of this work, the reactivity of Cl atoms towards CH2FCl and CH2FOOH was investigated; rate constants of k(Cl + CH2FCl) = (1.1 ± 0.1) × 10-13 and k(Cl + CH2FOOH) = (1.5 ± 0.5) × 10-13 cm3 molecule-1 s-1 were determined.

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U2 - 10.1016/0009-2614(93)E1466-T

DO - 10.1016/0009-2614(93)E1466-T

M3 - Journal article

AN - SCOPUS:0002112452

SN - 0009-2614

VL - 218

SP - 34

EP - 42

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-2

ER -