## 摘要

The kinetics of C_{6}H_{5} reactions with C_{2}H_{6} (1) and neo-C_{5}H_{12} (2) have been studied by the pulsed laser photolysis/mass spectrometric method using C_{6}H_{5}COCH_{3} as the phenyl precursor at temperatures between 565 and 1000 K. The rate constants were determined by kinetic modeling of the absolute yields of C_{6}H_{6} at each temperature. Another major product, C_{6}H_{5}CH_{3}, formed by the recombination of C_{6}H_{5} and CH_{3}, could also be quantitatively modeled using the known rate constant for the reaction. A weighted least-squares analysis of the two sets of data gave k_{1} = 10^{11.32±0.05} exp[-(2236 ± 91)/T] cm^{3} mol^{-1} s^{-1} and k_{2} = 10^{11.37±0.03} exp[-(1925 ± 48)/T] cm^{3} mol^{-1} s^{-1} for the temperature range studied. The result of our sensitivity analysis clearly supports that the yields of C_{6}H_{6} and C_{6}H_{5}CH_{3} depend primarily on the abstraction reactions and C_{6}H_{5} + CH_{3}, respectively. From the absolute rate constants for the two reactions we obtained the value for the H-abstraction from a primary C-H bond, k_{p}-CH = 10^{10.40±0.06} exp(-1790 ± 102/T) cm^{3} mol^{-1} s^{-1}. This result is utilized for analysis of other kinetic data measured for C_{6}H_{5} reactions with alkanes in solution as well as in the gas phase.

原文 | English |
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頁（從 - 到） | 64-69 |

頁數 | 6 |

期刊 | International Journal of Chemical Kinetics |

卷 | 33 |

發行號 | 1 |

DOIs | |

出版狀態 | Published - 1 1月 2001 |

## 指紋

深入研究「Kinetics of phenyl radical reactions with ethane and neopentane: reactivity of C_{6}H

_{5}toward the primary C-H bond of alkanes」主題。共同形成了獨特的指紋。