Mechanism of OH formation from ozonolysis of isoprene: kinetics and product yields

被引：102

作者：

Zhang, D ^{[1
]}

Lei, WF ^{[1
]}

Zhang, RY ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 358卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(02)00260-9

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 fate of primary ozonides and carbonyl oxides arising from the ozonolysis of isoprene is investigated using a statistical-dynamical master equation and transition state theory. Excited carbonyl oxides are shown to dissociate promptly to produce OH (11%) or isomerize to form dioxirane (32%). while the remaining (57%) are collisionally stabilized. An OH formation yield of 0.25 from prompt (0.11) and thermal (0.14) decomposition of the carbonyl oxide is obtained. The results reveal slow thermal decomposition of the carbonyl oxide to form OH. For formaldehyde. MACR, and MVK, the yields are estimated to be 0.67, 0.21, and 0.12. respectively. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：171 / 179

页数：9

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