Experimental determination of the rate constant of the reaction between C2H5O2 and OH radicals
Experimental determination of the rate constant of the reaction between C2H5O2 and OH radicals
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DOI：
10.1016/j.cplett.2014.11.069
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发表时间：
2015-01-05
影响因子：
2.8
通讯作者：
Fittschen, Christa
中科院分区：
文献类型：
--
作者：
Farago, Eszter P.;Schoemaecker, Coralie;Fittschen, Christa
本文用激光光解耦合CRDS和LIF技术测定了296 K时C_2H_5O_2 + OH ~->产物的反应速率常数。C2 H5 O2由Cl原子与C2 H6在55 Torr O-2下反应生成，其中Cl原子由（COCl）（2）的248 nm光解生成。OH自由基产生的同时，通过光解H2 O2。在单独的实验中，通过用CH 3OH代替C2 H6，从而将Cl原子转化为HO 2，来确定初始Cl浓度（以及C2 H5 O2）。在过量的C2 H5 O2中检测到时间分辨的OH衰变。测定了快反应速率常数k =（1.2 +/-0.3）× 10（-10）cm（3）s（-1）。(C)2014爱思唯尔有限公司版权所有。
The rate constant of the reaction C2H5O2 + OH -> Productshas been measured at T = 296K using laser photolysis coupled to CRDS and LIF. C2H5O2 was generated from the reaction of Cl-atoms with C2H6 at 55 Torr O-2, whereby Cl-atoms were generated by 248 nm photolysis of (COCl)(2). OH radicals were generated simultaneously by photolysing H2O2. The initial Clconcentration (and hence C2H5O2) was determined in separate experiments by replacing C2H6 by CH3OH and thus conversion of Cl-atoms to HO2. The time-resolved OH decay was detected in excess of C2H5O2. A fast rate constant of k = (1.2 +/- 0.3) x 10(-10) cm(3) s(-1) was determined. (C) 2014 Elsevier B.V. All rights reserved.