Rate coefficients and ClO radical yields in the reaction of O(1D) with CClF2CCl2F, CCl3CF3, CClF2CClF2, and CCl2FCF3
Rate coefficients and ClO radical yields in the reaction of O(1D) with CClF2CCl2F, CCl3CF3, CClF2CClF2, and CCl2FCF3
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O(1D) 与 CClF2CCl2F、CCl3CF3、CClF2CClF2 和 CCl2FCF3 反应中的速率系数和 ClO 自由基产率
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发表时间：
2011
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通讯作者：
J. B. Burkholder
中科院分区：
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作者：
M. Baasandorj;K. J. Feierabend;J. B. Burkholder
本文报道了296 K时O（1D）与CClF_2CCl_2F（CFC-113）（k_2）、CCl_3CF_3（CFC-113 a）（k_3）、CClF_2CClF_2（CFC-114）（k_4）和CCl_2FCF_3（CFC-114 a）（k_5）气相反应的速率系数k和ClO自由基产物产率Y。速率系数的损失O（1D）的测定使用竞争反应技术，与正丁烷（n-C4 H10）作为参考反应物，采用脉冲激光光解生产O（1D）结合激光诱导荧光检测的OH自由基的时间分布。测得速率系数为k2 =（2.33 ± 0.40）× 10−10 cm 3 molecule−1 s−1，k3 =（2.61 ± 0.40）× 10−10 cm 3 molecule−1 s−1，k4 =（1.42 ± 0.25）× 10−10 cm 3 molecule−1 s−1，k5 =（1.62 ± 0.30）× 10−10 cm 3 molecule−1 s−1。采用脉冲激光光解结合光腔衰荡光谱法测得反应（2）-（5）的ClO自由基产物产率分别为0.80 ± 0.10、0.79 ± 0.10、0.85 ± 0.12和0.79 ± 0.10。引用的k和Y误差为2σ（95%置信度）水平，包括估计的系统误差。© 2011 Wiley Periodicals，Inc.* Int J Chem Kinet 43：393-401，2011
Rate coefficients, k, and ClO radical product yields, Y, for the gas-phase reaction of O(1D) with CClF2CCl2F (CFC-113) (k2), CCl3CF3 (CFC-113a) (k3), CClF2CClF2 (CFC-114) (k4), and CCl2FCF3 (CFC-114a) (k5) at 296 K are reported. Rate coefficients for the loss of O(1D) were measured using a competitive reaction technique, with n-butane (n-C4H10) as the reference reactant, employing pulsed laser photolysis production of O(1D) combined with laser-induced fluorescence detection of the OH radical temporal profile. Rate coefficients were measured to be k2 = (2.33 ± 0.40) × 10−10 cm3 molecule−1 s−1, k3 = (2.61 ± 0.40) × 10−10 cm3 molecule−1 s−1, k4 = (1.42 ± 0.25) × 10−10 cm3 molecule−1 s−1, and k5 = (1.62 ± 0.30) × 10−10 cm3 molecule−1 s−1. ClO radical product yields for reactions (2)–(5) were measured using pulsed laser photolysis combined with cavity ring-down spectroscopy to be 0.80 ± 0.10, 0.79 ± 0.10, 0.85 ± 0.12, and 0.79 ± 0.10, respectively. The quoted errors in k and Y are at the 2σ (95% confidence) level and include estimated systematic errors. © 2011 Wiley Periodicals, Inc.* Int J Chem Kinet 43: 393–401, 2011