Atmospheric Chemistry of CH3CH2OCH3: Kinetics and Mechanism of Reactions with Cl Atoms and OH Radicals

被引：9
|
作者：
Andersen, Mads P. Sulbaek [1 ,2 ]
Svendsen, Sissel Bjorn [2 ]
Osterstrom, Freja From [2 ]
Nielsen, Ole John [2 ]
机构：
[1] Calif State Univ Northridge, Dept Chem & Biochem, Northridge, CA 91330 USA
[2] Univ Copenhagen, Dept Chem, Copenhagen Ctr Atmospher Res, DK-2100 Copenhagen, Denmark
来源：
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS | 2017年 / 49卷 / 01期
关键词：
TERT-BUTYL ETHER; VIBRATIONAL-ENERGY DISTRIBUTION; GAS-PHASE REACTIONS; HYDROXYL RADICALS; DIMETHYL ETHER; CHLORINE ATOMS; RATE COEFFICIENTS; RATE CONSTANTS; ORGANIC-COMPOUNDS; SERIES;
D O I：
10.1002/kin.21051
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：
The atmospheric chemistry of methyl ethyl ether, CH3CH2OCH3, was examined using FT-IR/relative-rate methods. Hydroxyl radical and chlorine atom rate coefficients of k(CH3CH2OCH3+OH) = (7.53 +/- 2.86) x 10(-12) cm(3) molecule(-1) s(-1) and k(CH3CH2OCH3+Cl) = (2.35 +/- 0.43) x 10(-10) cm(3) molecule(-1) s(-1) were determined (297 +/- 2 K). The Cl rate coefficient determined here is 30% lower than the previous literature value. The atmospheric lifetime for CH3CH2OCH3 is approximately 2 days. The chlorine atom initiated oxidation of CH3CH2OCH3 gives CH3C(O)H (9 +/- 2%), CH3CH2OC(O)H (29 +/- 7%), CH3OC(O)H (19 +/- 7%), and CH3C(O)OCH3 (17 +/- 7%). The IR absorption cross section for CH3CH2OCH3 is (7.97 +/- 0.40) x 10(-17) cm molecule(-1) (1000-3100 cm-1). CH3CH2OCH3 has a negligible impact on the radiative forcing of climate. (C) 2016 Wiley Periodicals, Inc. Int J Chem Kinet 49: 10-20, 2017
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页码：10 / 20
页数：11
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