Mechanism of OH formation from ozonolysis of isoprene: kinetics and product yields
Mechanism of OH formation from ozonolysis of isoprene: kinetics and product yields
复制标题
DOI：
10.1016/s0009-2614(02)00260-9
复制
发表时间：
2002-05-31
影响因子：
2.8
通讯作者：
Zhang, RY
中科院分区：
文献类型：
--
作者：
Zhang, D;Lei, WF;Zhang, RY
用统计动力学主方程和过渡态理论研究了异戊二烯臭氧氧化生成的初级臭氧和羰基氧化物的去向。激发的羰基氧化物迅速解离生成OH(11%)或异构化生成二氧六环(32%)。而其余的(57%)是碰撞稳定的。由瞬时(0.11)和热分解(0.14)生成OH的产率为0.25。结果表明，羰基氧化物的热分解速度很慢，生成了羟基。为了甲醛。Macr和MVK，收益率估计为0.67、0.21和0.12。分别进行了分析。(C)2002 Elsevier Science B.V.保留所有权利。
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.