Kinetics of C6H5 radical reactions with 2-methylpropane, 2,3-dimethylbutane and 2,3,4-trimethylpentane

J. Park*, S. I. Gheyas, Ming-Chang Lin

*此作品的通信作者

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

The absolute bimolecular rate constants for the reactions of C6H5 with 2-methyl-propane, 2,3-dimethylbutane and 2,3,4-trimethylpentane have been measured by cavity ring-down spectrometry at temperatures between 290 and 500 K. For 2-methylpropane, additional measurements were performed with the pulsed laser photolysis/mass spectrometry, extending the temperature range to 972 K. The reactions were found to be dominated by the abstraction of a tertiary C-H bond from the molecular reactant, resulting in the production of a tertiary alkyl radical: C6H5+CH(CH3)3→C6H6+t-C4H9 (1) C6H5+(CH3)2CHCH(CH3)2→C6H6 +t-C6H13 (2) C6H5+(CH3)CHCH(CH3)CH(CH3)2 →C6H6+t-C8H17 (3) with the following rate constants given in units of cm3 mol-1 s-1: k1 = 10(11.45±0.18) e-(1512±44)/T k2 = 10(11.72±0.15) e-(1OO7±124)/T k3 = 10(11.83±0.13) e-(428±108)/T.

原文English
頁(從 - 到)645-653
頁數9
期刊International Journal of Chemical Kinetics
31
發行號9
DOIs
出版狀態Published - 9月 1999

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