Rate constants for the reactions of hydroxyl radical with several fluoroethers by the relative rate method

被引：24

作者：

Wilson, Edmond W., Jr. ^{[1
]}

Hamilton, Wesley A. ^{[1
]}

Mount, Hillary R. ^{[1
]}

DeMore, William B. ^{[1
]}

机构：

[1] Harding Univ, Dept Phys Sci, Searcy, AR 72149 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2007年 / 111卷 / 09期

关键词：

D O I：

10.1021/jp068355d

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：

Relative rate experiments were used to measure ratios of chemical kinetics rate constants as a function of temperature for the reactions of OH with eight fluoroethers, including CF3OCF2CHF2, CF3OCF2CHFCF3, CHF2CF2OCHF2, CF3CHFCF2OCH2CF3, (CF3)(2)CHOCHF2, CF2HCF2OCH2CF3, CHF2CF2OCHFCF3, and CF3CH2OCH2CF3. The temperature ranges were about 270-400 K. Each compound was measured against at least two references. Results are compared with previous data where available. An approach using model compounds for the approximate estimation of rate constants for the fluoroethers is discussed. Observed temperature dependences for fluoroethers from the present work and some literature work are shown to be accurately predictable, based on a previously determined correlation of k(298K) with the pre-exponential factor, A, in the Arrhenius equation k = Ae(-E/RT).

引用

页码：1610 / 1617

页数：8

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