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

Wilson  EW; Hamilton  WA; Mount  HRDeMore  WB

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

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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).

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《The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory》 |2007年第9期|1610-1617|共8页
作者
Wilson EW; Hamilton WA; Mount HRDeMore WB;
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作者单位

Harding Univ, Dept Phys Sci, Searcy, AR 72149 USA;

Department of Mathematical Physics, Lund Institute of Technology, P.O. Box 118, S-221 00 Lund, Sweden;

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原文格式 PDF
正文语种英语
中图分类物理化学（理论化学）、化学物理学;
关键词
GLOBAL WARMING POTENTIALS; ABSORPTION CROSS-SECTIONS; GAS-PHASE REACTIONS; OH RADICALS; ATMOSPHERIC CHEMISTRY; CL ATOMS; DEGRADATION MECHANISM; CH3CHF2 HFC-152A; CH2FCH2F HFC-152; HYDROFLUOROETHERS;

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1. Relative rate constant measurements for the gas‐phase reactions of hydroxyl radicals with 4‐methyl‐2‐pentanone,trans‐4‐octene, andtrans‐2‐heptene [J] . Lawrence N. Orji, Daniel A. Stone international journal of chemical kinetics . 1992,第8期

机译：Relative rate constant measurements for the gas‐phase reactions of hydroxyl radicals with 4‐methyl‐2‐pentanone,trans‐4‐octene, andtrans‐2‐heptene
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Rate constants for the reactions of hydroxyl radical with several fluoroethers by the relative rate method

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