Atmospheric chemistry of (CF3)2CFOCH3

Lene Løffler Andersen; Freja From Østerstrøm; Ole John Nielsen; Mads Peter Sulbæk Andersen; Timothy J. Wallington

doi:10.1016/j.cplett.2014.05.036

Atmospheric chemistry of (CF₃)₂CFOCH₃

Lene Løffler Andersen^*, Freja From Østerstrøm, Ole John Nielsen, Mads Peter Sulbæk Andersen, Timothy J. Wallington

^*Corresponding author af dette arbejde

Kemisk Institut

8 Citationer (Scopus)

Abstract

FTIR smog chamber techniques were used to measure k(Cl + (CF ₃)₂CFOCH₃) = (1.80 ± 0.42) × 10^-13, k(Cl + (CF₃)₂CFOCHO) = (1.47 ± 0.56) × 10^-14, and k(OH + (CF₃) ₂CFOCH₃) = (1.55 ± 0.24) × 10^-14 cm³ molecule^-1 s^-1. The chlorine-atom initiated oxidation of (CF₃)₂CFOCH₃ in air in the absence of NO_X results in conversion of (CF₃) ₂CFOCH₃ into the formate, (CF₃) ₂CFOCHO, in a yield indistinguishable from 100%. In the presence of NO_X, the (CF₃)₂CFOCHO yield was decreased by approximately 17%, which we attribute to the formation of peroxy and/or alkoxy nitrates. The atmospheric lifetime of (CF₃)₂CFOCH ₃ was estimated to 3.7 years. The infrared spectrum of (CF ₃)₂CFOCH₃ was measured and a global warming potential GWP₁₀₀ = 354 was determined.

Originalsprog	Engelsk
Tidsskrift	Chemical Physics Letters
Vol/bind	607
Sider (fra-til)	5-9
Antal sider	5
ISSN	0009-2614
DOI	https://doi.org/10.1016/j.cplett.2014.05.036
Status	Udgivet - 2014

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10.1016/j.cplett.2014.05.036

Citationsformater

@article{350066ef19794efeaf0930ca59a1dd29,

title = "Atmospheric chemistry of (CF3)2CFOCH3",

abstract = "FTIR smog chamber techniques were used to measure k(Cl + (CF 3)2CFOCH3) = (1.80 ± 0.42) × 10-13, k(Cl + (CF3)2CFOCHO) = (1.47 ± 0.56) × 10-14, and k(OH + (CF3) 2CFOCH3) = (1.55 ± 0.24) × 10-14 cm3 molecule-1 s-1. The chlorine-atom initiated oxidation of (CF3)2CFOCH3 in air in the absence of NOX results in conversion of (CF3) 2CFOCH3 into the formate, (CF3) 2CFOCHO, in a yield indistinguishable from 100%. In the presence of NOX, the (CF3)2CFOCHO yield was decreased by approximately 17%, which we attribute to the formation of peroxy and/or alkoxy nitrates. The atmospheric lifetime of (CF3)2CFOCH 3 was estimated to 3.7 years. The infrared spectrum of (CF 3)2CFOCH3 was measured and a global warming potential GWP100 = 354 was determined.",

author = "Andersen, {Lene L{\o}ffler} and {\O}sterstr{\o}m, {Freja From} and Nielsen, {Ole John} and Andersen, {Mads Peter Sulb{\ae}k} and Wallington, {Timothy J.}",

year = "2014",

doi = "10.1016/j.cplett.2014.05.036",

language = "English",

volume = "607",

pages = "5--9",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

}

TY - JOUR

T1 - Atmospheric chemistry of (CF3)2CFOCH3

AU - Andersen, Lene Løffler

AU - Østerstrøm, Freja From

AU - Nielsen, Ole John

AU - Andersen, Mads Peter Sulbæk

AU - Wallington, Timothy J.

PY - 2014

Y1 - 2014

N2 - FTIR smog chamber techniques were used to measure k(Cl + (CF 3)2CFOCH3) = (1.80 ± 0.42) × 10-13, k(Cl + (CF3)2CFOCHO) = (1.47 ± 0.56) × 10-14, and k(OH + (CF3) 2CFOCH3) = (1.55 ± 0.24) × 10-14 cm3 molecule-1 s-1. The chlorine-atom initiated oxidation of (CF3)2CFOCH3 in air in the absence of NOX results in conversion of (CF3) 2CFOCH3 into the formate, (CF3) 2CFOCHO, in a yield indistinguishable from 100%. In the presence of NOX, the (CF3)2CFOCHO yield was decreased by approximately 17%, which we attribute to the formation of peroxy and/or alkoxy nitrates. The atmospheric lifetime of (CF3)2CFOCH 3 was estimated to 3.7 years. The infrared spectrum of (CF 3)2CFOCH3 was measured and a global warming potential GWP100 = 354 was determined.

AB - FTIR smog chamber techniques were used to measure k(Cl + (CF 3)2CFOCH3) = (1.80 ± 0.42) × 10-13, k(Cl + (CF3)2CFOCHO) = (1.47 ± 0.56) × 10-14, and k(OH + (CF3) 2CFOCH3) = (1.55 ± 0.24) × 10-14 cm3 molecule-1 s-1. The chlorine-atom initiated oxidation of (CF3)2CFOCH3 in air in the absence of NOX results in conversion of (CF3) 2CFOCH3 into the formate, (CF3) 2CFOCHO, in a yield indistinguishable from 100%. In the presence of NOX, the (CF3)2CFOCHO yield was decreased by approximately 17%, which we attribute to the formation of peroxy and/or alkoxy nitrates. The atmospheric lifetime of (CF3)2CFOCH 3 was estimated to 3.7 years. The infrared spectrum of (CF 3)2CFOCH3 was measured and a global warming potential GWP100 = 354 was determined.

U2 - 10.1016/j.cplett.2014.05.036

DO - 10.1016/j.cplett.2014.05.036

M3 - Journal article

AN - SCOPUS:84901934778

SN - 0009-2614

VL - 607

SP - 5

EP - 9

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -

Atmospheric chemistry of (CF3)2CFOCH3

Abstract

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Atmospheric chemistry of (CF₃)₂CFOCH₃