Laser photolysis/laser-induced fluorescence studies of the reaction of hydroxyl with 1,1,1,2- and 1,1,2,2-tetrachloroethane over an extended temperature range
Laser photolysis/laser-induced fluorescence studies of the reaction of hydroxyl with 1,1,1,2- and 1,1,2,2-tetrachloroethane over an extended temperature range
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DOI：
10.1021/j100121a033
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发表时间：
1993-05
期刊：
影响因子：
--
通讯作者：
Zhen Jiang;P. Taylor;B. Dellinger
中科院分区：
文献类型：
--
作者：
Zhen Jiang;P. Taylor;B. Dellinger
绝对速率系数的气相反应的OH自由基与1，1，1，2-（k 1）和1，1，2，2-四氯乙烷（k 2）在一个扩展的温度范围内的报告。采用激光光解/激光诱导荧光技术，在总压为740±10 Torr的流动系统中，使用He作为稀释剂和载气进行实验。速率系数的温度依赖性可用修正的Arrhenius公式k1来描述（293-882 K）=（3.36±0.52）×10 - 12（T/300）1.21 exp[k2（295- 701K）=（2.72±0.42）×10 - 12（T/300）0.22exp [（-915 <$62）/T] cm3 molec-1s-1
Absolute rate coefficients are reported for the gas-phase reaction of OH radicals with 1,1,1,2-(k 1 ) and 1, 1,2,2-tetrachloroethane (k 2 ) over an extended temperature range. Employing a laser photolysis/laser-induced fluorescence technique, experiments were conducted with a flow system at a total pressure of 740±10 Torr using He as diluent and carrier gas. The temperature dependence of the rate coefficients was best described by the modified Arrhenius expressions k 1 (293-882 K)=(3.36±0.52)×10 -12 (T/300) 1.21 exp[(-1553±92)/T] cm 3 molecule -1 s -1 and k 2 (295-701 K)=(2.72±0.42)×10 -12 (T/300) 0.22 exp[(-915±62)/T] cm 3 molec -1 s -1