Atmospheric chemistry of C2F5CHO:: mechanism of the C2F5C(O)O2+HO2 reaction

被引：26

作者：

Andersen, MPS

Hurley, MD

Wallington, TJ

Ball, JC

Martin, JW

Ellis, DA

Mabury, SA

机构：

[1] Ford Motor Co, Dearborn, MI 48121 USA

[2] Univ Copenhagen, Dept Chem, DK-2100 Copenhagen, Denmark

[3] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 381卷 / 1-2期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/j.cplett.2003.09.085

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/FTIR techniques were used to study the gas-phase reaction of C2F5C(O) with HO2 radicals in 100-700 Torr of air, or O-2, diluent at 296 K. The reaction proceeds by two pathways leading to formation of C2F5C(O)OH and O-3 in ayield of 24 +/- 4% and C2F5C(O)O radicals, OH radicals and O-2 in a yield of 76 +/- 4%. The gas phase reaction of CnF2n+1C(O)O-2 with HO2 radicals offers a potential explanation for at least part of the observed environmental burden of fluorinated carboxylic acids, CnF2n+1C(O)OH. As part of this work an upper limit for the rate constant of reaction of Cl atorns with C2F5C(O)OH at 296 K was determined; k(Cl + C2F5C(O)OH) < 1 x 10(-11) cm(3) molecule(-1) s(-1). (C) 2003 Published by Elsevier B.V.

引用

页码：14 / 21

页数：8

共 36 条

[1] Atmospheric chemistry of C2F5CHO:: reaction with Cl atoms and OH radicals, IR spectrum of C2F5C(O)O2NO2 [J].