Atmospheric chemistry of CF3CF2OCH3

Freja F. Østerstrøm; Ole John Nielsen; Timothy J. Wallington

doi:10.1016/j.cplett.2016.04.086

Atmospheric chemistry of CF₃CF₂OCH₃

Freja F. Østerstrøm^*, Ole John Nielsen, Timothy J. Wallington

^*Corresponding author for this work

Environment and Geography

Research output: Contribution to journal › Article › peer-review

Abstract

Smog chamber Fourier transform infrared techniques were used to investigate the kinetics of the reaction of CF₃CF₂OCH₃ with Cl atoms and OH radicals: k(Cl + CF₃CF₂OCH₃) = (1.09 ± 0.16) × 10^-13 and k(OH + CF₃CF₂OCH₃) = (1.28 ± 0.19) × 10^-14 cm³ molecule^-1 s^-1 in 700 Torr total pressure of N₂/O₂ at 296 ± 2 K. The Cl-initiated oxidation of CF₃CF₂OCH₃ gives CF₃CF₂OCHO in a yield indistinguishable from 100%. An estimate of k(Cl + CF₃CF₂OCHO) = (1.18 ± 0.34) × 10^-14 cm³ molecule^-1 s^-1 is provided. Based on the OH reaction rate, the atmospheric lifetime of CF₃CF₂OCH₃ is estimated to be 5.0 years. The 100-year time horizon global warming potential of CF₃CF₂OCH₃ is estimated to be 585. The atmospheric impact of CF₃CF₂OCH₃ is discussed.

Original language	English
Pages (from-to)	149-154
Number of pages	6
Journal	Chemical Physics Letters
Volume	653
Early online date	27 Apr 2016
DOIs	https://doi.org/10.1016/j.cplett.2016.04.086
Publication status	Published - 1 Jun 2016

Keywords

Atmospheric fate
Cl atoms
Gas phase reactions
Global warming potential
Kinetics
OH radicals
Oxidation products

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10.1016/j.cplett.2016.04.086

Cite this

@article{2beb8adb8abd4c7bb162c5195bbc403b,

title = "Atmospheric chemistry of CF3CF2OCH3",

abstract = "Smog chamber Fourier transform infrared techniques were used to investigate the kinetics of the reaction of CF3CF2OCH3 with Cl atoms and OH radicals: k(Cl + CF3CF2OCH3) = (1.09 ± 0.16) × 10-13 and k(OH + CF3CF2OCH3) = (1.28 ± 0.19) × 10-14 cm3 molecule-1 s-1 in 700 Torr total pressure of N2/O2 at 296 ± 2 K. The Cl-initiated oxidation of CF3CF2OCH3 gives CF3CF2OCHO in a yield indistinguishable from 100%. An estimate of k(Cl + CF3CF2OCHO) = (1.18 ± 0.34) × 10-14 cm3 molecule-1 s-1 is provided. Based on the OH reaction rate, the atmospheric lifetime of CF3CF2OCH3 is estimated to be 5.0 years. The 100-year time horizon global warming potential of CF3CF2OCH3 is estimated to be 585. The atmospheric impact of CF3CF2OCH3 is discussed.",

keywords = "Atmospheric fate, Cl atoms, Gas phase reactions, Global warming potential, Kinetics, OH radicals, Oxidation products",

author = "{\O}sterstr{\o}m, {Freja F.} and Nielsen, {Ole John} and Wallington, {Timothy J.}",

year = "2016",

month = jun,

day = "1",

doi = "10.1016/j.cplett.2016.04.086",

language = "English",

volume = "653",

pages = "149--154",

journal = "Chemical Physics Letters",

issn = "0009-2614",

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TY - JOUR

T1 - Atmospheric chemistry of CF3CF2OCH3

AU - Østerstrøm, Freja F.

AU - Nielsen, Ole John

AU - Wallington, Timothy J.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Smog chamber Fourier transform infrared techniques were used to investigate the kinetics of the reaction of CF3CF2OCH3 with Cl atoms and OH radicals: k(Cl + CF3CF2OCH3) = (1.09 ± 0.16) × 10-13 and k(OH + CF3CF2OCH3) = (1.28 ± 0.19) × 10-14 cm3 molecule-1 s-1 in 700 Torr total pressure of N2/O2 at 296 ± 2 K. The Cl-initiated oxidation of CF3CF2OCH3 gives CF3CF2OCHO in a yield indistinguishable from 100%. An estimate of k(Cl + CF3CF2OCHO) = (1.18 ± 0.34) × 10-14 cm3 molecule-1 s-1 is provided. Based on the OH reaction rate, the atmospheric lifetime of CF3CF2OCH3 is estimated to be 5.0 years. The 100-year time horizon global warming potential of CF3CF2OCH3 is estimated to be 585. The atmospheric impact of CF3CF2OCH3 is discussed.

AB - Smog chamber Fourier transform infrared techniques were used to investigate the kinetics of the reaction of CF3CF2OCH3 with Cl atoms and OH radicals: k(Cl + CF3CF2OCH3) = (1.09 ± 0.16) × 10-13 and k(OH + CF3CF2OCH3) = (1.28 ± 0.19) × 10-14 cm3 molecule-1 s-1 in 700 Torr total pressure of N2/O2 at 296 ± 2 K. The Cl-initiated oxidation of CF3CF2OCH3 gives CF3CF2OCHO in a yield indistinguishable from 100%. An estimate of k(Cl + CF3CF2OCHO) = (1.18 ± 0.34) × 10-14 cm3 molecule-1 s-1 is provided. Based on the OH reaction rate, the atmospheric lifetime of CF3CF2OCH3 is estimated to be 5.0 years. The 100-year time horizon global warming potential of CF3CF2OCH3 is estimated to be 585. The atmospheric impact of CF3CF2OCH3 is discussed.

KW - Atmospheric fate

KW - Cl atoms

KW - Gas phase reactions

KW - Global warming potential

KW - Kinetics

KW - OH radicals

KW - Oxidation products

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DO - 10.1016/j.cplett.2016.04.086

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JO - Chemical Physics Letters

JF - Chemical Physics Letters