Atmospheric chemistry of FO2 radicals. Reaction with Ch4, O3, No, No2, and Co at 295 K

J. Sehested; K. Sehested; O. J. Nielsen; T. J. Wallington

doi:10.1021/j100078a014

Atmospheric chemistry of FO₂ radicals. Reaction with Ch₄, O₃, No, No₂, and Co at 295 K

J. Sehested^*, K. Sehested, O. J. Nielsen, T. J. Wallington

^*Corresponding author for this work

27 Citations (Scopus)

Abstract

Using pulse radiolysis combined with UV absorption spectroscopy, upper limits for the rate constants of the reaction of the FO₂ radical with O₃, CH₄, and CO were determined to be <3.4 × 10^-16, <4.1 × 10^-15, and <5.1 × 10^-16 cm³ molecule^-1 s^-1, respectively. The rate constants for the reactions of FO₂ radicals with NO and NO₂ were measured: FO₂ + NO → FNO + O₂ (10a); FO₂ + NO₂ → products (11). The rate constants for reactions 10 and 11 were determined to be (1.47 ± 0.08) × 10^-12 and (1.05 ± 0.15) × 10^-13 cm³ molecule^-1 s^-1, respectively. Reaction 10a was found to give FNO in a yield of 100 ± 14%. As a part of this work, an upper limit of the reaction of FO radicals with O₃ was determined to be <1.2 × 10^-12 cm³ molecule^-1 s^-1. Results are discussed in the context of the atmospheric chemistry of the FO₂ radical and hydrofluorocarbons.

Original language	English
Journal	Journal of Physical Chemistry
Volume	98
Issue number	27
Pages (from-to)	6731-6739
Number of pages	9
ISSN	0022-3654
DOIs	https://doi.org/10.1021/j100078a014
Publication status	Published - 1 Jan 1994

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title = "Atmospheric chemistry of FO2 radicals. Reaction with Ch4, O3, No, No2, and Co at 295 K",

abstract = "Using pulse radiolysis combined with UV absorption spectroscopy, upper limits for the rate constants of the reaction of the FO2 radical with O3, CH4, and CO were determined to be <3.4 × 10-16, <4.1 × 10-15, and <5.1 × 10-16 cm3 molecule-1 s-1, respectively. The rate constants for the reactions of FO2 radicals with NO and NO2 were measured: FO2 + NO → FNO + O2 (10a); FO2 + NO2 → products (11). The rate constants for reactions 10 and 11 were determined to be (1.47 ± 0.08) × 10-12 and (1.05 ± 0.15) × 10-13 cm3 molecule-1 s-1, respectively. Reaction 10a was found to give FNO in a yield of 100 ± 14%. As a part of this work, an upper limit of the reaction of FO radicals with O3 was determined to be <1.2 × 10-12 cm3 molecule-1 s-1. Results are discussed in the context of the atmospheric chemistry of the FO2 radical and hydrofluorocarbons.",

author = "J. Sehested and K. Sehested and Nielsen, {O. J.} and Wallington, {T. J.}",

year = "1994",

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doi = "10.1021/j100078a014",

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journal = "Journal of Physical Chemistry",

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T1 - Atmospheric chemistry of FO2 radicals. Reaction with Ch4, O3, No, No2, and Co at 295 K

AU - Sehested, J.

AU - Sehested, K.

AU - Nielsen, O. J.

AU - Wallington, T. J.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Using pulse radiolysis combined with UV absorption spectroscopy, upper limits for the rate constants of the reaction of the FO2 radical with O3, CH4, and CO were determined to be <3.4 × 10-16, <4.1 × 10-15, and <5.1 × 10-16 cm3 molecule-1 s-1, respectively. The rate constants for the reactions of FO2 radicals with NO and NO2 were measured: FO2 + NO → FNO + O2 (10a); FO2 + NO2 → products (11). The rate constants for reactions 10 and 11 were determined to be (1.47 ± 0.08) × 10-12 and (1.05 ± 0.15) × 10-13 cm3 molecule-1 s-1, respectively. Reaction 10a was found to give FNO in a yield of 100 ± 14%. As a part of this work, an upper limit of the reaction of FO radicals with O3 was determined to be <1.2 × 10-12 cm3 molecule-1 s-1. Results are discussed in the context of the atmospheric chemistry of the FO2 radical and hydrofluorocarbons.

AB - Using pulse radiolysis combined with UV absorption spectroscopy, upper limits for the rate constants of the reaction of the FO2 radical with O3, CH4, and CO were determined to be <3.4 × 10-16, <4.1 × 10-15, and <5.1 × 10-16 cm3 molecule-1 s-1, respectively. The rate constants for the reactions of FO2 radicals with NO and NO2 were measured: FO2 + NO → FNO + O2 (10a); FO2 + NO2 → products (11). The rate constants for reactions 10 and 11 were determined to be (1.47 ± 0.08) × 10-12 and (1.05 ± 0.15) × 10-13 cm3 molecule-1 s-1, respectively. Reaction 10a was found to give FNO in a yield of 100 ± 14%. As a part of this work, an upper limit of the reaction of FO radicals with O3 was determined to be <1.2 × 10-12 cm3 molecule-1 s-1. Results are discussed in the context of the atmospheric chemistry of the FO2 radical and hydrofluorocarbons.

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DO - 10.1021/j100078a014

M3 - Journal article

AN - SCOPUS:0028767568

SN - 0022-3654

VL - 98

SP - 6731

EP - 6739

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 27

ER -

Atmospheric chemistry of FO₂ radicals. Reaction with Ch₄, O₃, No, No₂, and Co at 295 K

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