KINETICS OF THE REACTIONS OF HYDROGEN IODIDE WITH HYDROXYL AND NITRATE RADICALS

被引：21
|
作者：
LANCAR, IT
MELLOUKI, A
POULET, G
机构：
[1] Centre de Recherches sur la Chimie de la Combustion et des Hautes Températures, CNRS
来源：
CHEMICAL PHYSICS LETTERS | 1991年 / 177卷 / 06期
关键词：
D O I：
10.1016/0009-2614(91)90083-L
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 reactions of HI with OH and NO3 have been studied in discharge-flow reactors coupled to EPR and mass spectrometry for analysis. The rate constants for the reactions HI + OH --> H2O + I (1) and HI + NO3 --> HNO3 + I (2) were determined at 298 K: k1 = (3.3 +/- 0.2) X 10(-11) and k2 = (2.5 +/- 0.8) X 10(-15) cm3 molecule-1 s-1. Further measurements of k2 over the temperature range 298-373 K yielded the expression k2 = 1.3 X 10(-12) exp[(-1830 +/- 300)/T] cm3 molecule-1 s-1. The results for reaction (1) are compared with earlier literature data; those for reaction (2) are the first ones.
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页码：554 / 558
页数：5
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