THE PRESSURE-DEPENDENCE OF THE NO2 PRODUCT YIELD IN THE REACTION OF NO3 RADICALS WITH SELECTED ALKENES

被引:0
|
作者
OLZMANN, M [1 ]
BENTER, T [1 ]
LIESNER, M [1 ]
SCHINDLER, RN [1 ]
机构
[1] CHRISTIAN ALBRECHTS UNIV KIEL,INST PHYS CHEM,D-24098 KIEL,GERMANY
关键词
TROPOSPHERIC CHEMISTRY; CHEMICAL KINETICS; CHEMICAL ACTIVATION; OLEFINS; NO3; RADICALS;
D O I
暂无
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
An explanation is given For the difference in pressure dependences of the NO2 product yield in the reactions NO3 + alkene and NO3 + 1,3-alkadiene including styrene. A simple model is used to describe the decomposition over stabilization ratio for the chemically activated intermediate nitrooxy-alkyl radical. It is shown that the resonance stabilization of this radical in the case of conjugated olefins is sufficiently high to account for the difference observed. The model is applied to experimental data from the reactions of NO3 with trans-2-butene, 2,3-dimethyl-2-butene, 2-methyl-1,3-butadiene, 2,3-dimethyl- 1,3-butadiene, and styrene. Kinetic parameters for the decomposition reaction of the intermediate radicals into NO2 and epoxide are estimated and consequences for their reactions under tropospheric conditions are discussed.
引用
收藏
页码:2677 / 2683
页数:7
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