Atmospheric chemistry of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H: Reaction with Cl atoms and OH radicals, degradation mechanism, and global warming potentials

TJ Wallington; MD Hurley; OJ Nielsen; Mads Peter Sulbæk Andersen

doi:10.1021/jp046454q

Atmospheric chemistry of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H: Reaction with Cl atoms and OH radicals, degradation mechanism, and global warming potentials

TJ Wallington, MD Hurley, OJ Nielsen, Mads Peter Sulbæk Andersen

Kemisk Institut

26 Citationer (Scopus)

Abstract

Fourier transform infrared (FTIR) smog chamber techniques were used to measure k(Cl + CF3CFHCF2OCF3) = (4.09 +/- 0.42) x 10(-17), k(OH + CF3CFHCF2OCF3) = (1.43 +/- 0.28) x 10(-15), k(Cl + CF3CFHCF2OCF2H) = (6.89 +/- 1.29) x 10(-17), and k(OH + CF3CFHCF2OCF2H) = (1.79 +/- 0.34) x 10(-15) cm(3) molecule(-1) s(-1) in 700 Torr of N-2/O-2 diluent at 296 K. The atmospheric lifetimes of CF3CFHCF2OCF3 and CF3CFHCFOCF2H are approximately 40 and 32 years, respectively. Chlorine atom-initiated oxidation of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H gives CF3C(O)F in molar yields of 82 +/- 5% and 96 +/- 6 respectively. The 100-year time horizon global warming potentials of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H relative to CO2 are 4530 and 4340. Results are discussed with respect to the atmospheric chemistry of hydrofluoroethers.

Originalsprog	Udefineret/Ukendt
Tidsskrift	Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
Vol/bind	108
Udgave nummer	51
Sider (fra-til)	11333-11338
Antal sider	6
ISSN	1089-5639
DOI	https://doi.org/10.1021/jp046454q
Status	Udgivet - 23 dec. 2004

Adgang til dokumentet

10.1021/jp046454q

Citationsformater

Wallington, TJ., Hurley, MD., Nielsen, OJ., & Andersen, M. P. S. (2004). Atmospheric chemistry of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H: Reaction with Cl atoms and OH radicals, degradation mechanism, and global warming potentials. Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, 108(51), 11333-11338. https://doi.org/10.1021/jp046454q

Atmospheric chemistry of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H: Reaction with Cl atoms and OH radicals, degradation mechanism, and global warming potentials. / Wallington, TJ; Hurley, MD; Nielsen, OJ et al.

I: Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, Bind 108, Nr. 51, 23.12.2004, s. 11333-11338.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

Wallington, TJ, Hurley, MD, Nielsen, OJ & Andersen, MPS 2004, 'Atmospheric chemistry of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H: Reaction with Cl atoms and OH radicals, degradation mechanism, and global warming potentials', Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, bind 108, nr. 51, s. 11333-11338. https://doi.org/10.1021/jp046454q

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title = "Atmospheric chemistry of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H: Reaction with Cl atoms and OH radicals, degradation mechanism, and global warming potentials",

abstract = "Fourier transform infrared (FTIR) smog chamber techniques were used to measure k(Cl + CF3CFHCF2OCF3) = (4.09 +/- 0.42) x 10(-17), k(OH + CF3CFHCF2OCF3) = (1.43 +/- 0.28) x 10(-15), k(Cl + CF3CFHCF2OCF2H) = (6.89 +/- 1.29) x 10(-17), and k(OH + CF3CFHCF2OCF2H) = (1.79 +/- 0.34) x 10(-15) cm(3) molecule(-1) s(-1) in 700 Torr of N-2/O-2 diluent at 296 K. The atmospheric lifetimes of CF3CFHCF2OCF3 and CF3CFHCFOCF2H are approximately 40 and 32 years, respectively. Chlorine atom-initiated oxidation of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H gives CF3C(O)F in molar yields of 82 +/- 5% and 96 +/- 6 respectively. The 100-year time horizon global warming potentials of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H relative to CO2 are 4530 and 4340. Results are discussed with respect to the atmospheric chemistry of hydrofluoroethers.",

author = "TJ Wallington and MD Hurley and OJ Nielsen and Andersen, {Mads Peter Sulb{\ae}k}",

year = "2004",

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doi = "10.1021/jp046454q",

language = "Udefineret/Ukendt",

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publisher = "American Chemical Society",

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T1 - Atmospheric chemistry of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H: Reaction with Cl atoms and OH radicals, degradation mechanism, and global warming potentials

AU - Wallington, TJ

AU - Hurley, MD

AU - Nielsen, OJ

AU - Andersen, Mads Peter Sulbæk

PY - 2004/12/23

Y1 - 2004/12/23

N2 - Fourier transform infrared (FTIR) smog chamber techniques were used to measure k(Cl + CF3CFHCF2OCF3) = (4.09 +/- 0.42) x 10(-17), k(OH + CF3CFHCF2OCF3) = (1.43 +/- 0.28) x 10(-15), k(Cl + CF3CFHCF2OCF2H) = (6.89 +/- 1.29) x 10(-17), and k(OH + CF3CFHCF2OCF2H) = (1.79 +/- 0.34) x 10(-15) cm(3) molecule(-1) s(-1) in 700 Torr of N-2/O-2 diluent at 296 K. The atmospheric lifetimes of CF3CFHCF2OCF3 and CF3CFHCFOCF2H are approximately 40 and 32 years, respectively. Chlorine atom-initiated oxidation of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H gives CF3C(O)F in molar yields of 82 +/- 5% and 96 +/- 6 respectively. The 100-year time horizon global warming potentials of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H relative to CO2 are 4530 and 4340. Results are discussed with respect to the atmospheric chemistry of hydrofluoroethers.

AB - Fourier transform infrared (FTIR) smog chamber techniques were used to measure k(Cl + CF3CFHCF2OCF3) = (4.09 +/- 0.42) x 10(-17), k(OH + CF3CFHCF2OCF3) = (1.43 +/- 0.28) x 10(-15), k(Cl + CF3CFHCF2OCF2H) = (6.89 +/- 1.29) x 10(-17), and k(OH + CF3CFHCF2OCF2H) = (1.79 +/- 0.34) x 10(-15) cm(3) molecule(-1) s(-1) in 700 Torr of N-2/O-2 diluent at 296 K. The atmospheric lifetimes of CF3CFHCF2OCF3 and CF3CFHCFOCF2H are approximately 40 and 32 years, respectively. Chlorine atom-initiated oxidation of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H gives CF3C(O)F in molar yields of 82 +/- 5% and 96 +/- 6 respectively. The 100-year time horizon global warming potentials of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H relative to CO2 are 4530 and 4340. Results are discussed with respect to the atmospheric chemistry of hydrofluoroethers.

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DO - 10.1021/jp046454q

M3 - Tidsskriftartikel

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JO - Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory

JF - Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory

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