Temperature dependence of the relative rate constants of the reactions of alkanes with oh radicals in aqueous solution

被引：0
|
作者：
V. L. Lobachev
Ya. V. Matvienko
E. S. Rudakov
机构：
[1] L. M. Litvinenko Institute of Physical Organic and Coal Chemistry,
来源：
Theoretical and Experimental Chemistry | 2009年 / 45卷
关键词：
hydroxyl radicals; alkanes; kinetics; substrate selectivity; temperature dependence;
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学科分类号：
摘要：
A study was carried out on the rate constant ratio (kRH/kEtH) in reactions of alkanes C3H8, n-C4H10, n-C5H12, n-C6H14, i-C4H10, c-C5H10, and c-C6H12 with OH radicals in water at 5-55°C and the relative activation parameters ARH/AEtH and EEtH – ERH. The values of EEtH – ERH in water and the gas phase have opposite signs. The values of kRH/kEtH decrease with increasing temperature in the gas phase but increase in water. The behavior of these reactions in water may be attributed to a solvent cage effect.
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页码：239 / 245
页数：6
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