Atmospheric chemistry of CF3CF2OCH3

被引：2
|
作者：
Osterstrom, Freja F. [1 ]
Nielsen, Ole John [1 ]
Wallington, Timothy J. [2 ]
机构：
[1] Univ Copenhagen, Dept Chem, Copenhagen Ctr Atmospher Res, Univ Pk 5, DK-2100 Copenhagen O, Denmark
[2] Ford Motor Co, Res & Adv Engn, Dearborn, MI 48121 USA
来源：
CHEMICAL PHYSICS LETTERS | 2016年 / 653卷
关键词：
Gas phase reactions; Kinetics; OH radicals; Cl atoms; Oxidation products; Atmospheric fate; Global warming potential; GAS-PHASE REACTIONS; GLOBAL WARMING POTENTIALS; ATOM-INITIATED OXIDATION; OH RADICALS; DEGRADATION MECHANISM; RATE CONSTANTS; CL ATOMS; PHOTOCHEMICAL DATA; KINETICS; CHLORINE;
D O I：
10.1016/j.cplett.2016.04.086
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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) x 10(-13) and k(OH + CF3CF2OCH3) = (1.28 +/- 0.19) x 10(-14) cm(3) molecule(-1) s(-1) in 700 Torr total pressure of N-2/O-2 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) x 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. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：149 / 154
页数：6
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