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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Kinetics and Products of the Reaction of OH Radicals with ClNO from 220 to 940 K
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Kinetics and Products of the Reaction of OH Radicals with ClNO from 220 to 940 K

机译：用220至940 k的ClNo激进的动力学和产物的反应

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摘要

The kinetics and products of the reaction of OH radicals with ClNO have been studied in a flow reactor coupled with an electron impact ionization mass spectrometer at nearly 2 Torr total pressure of helium and over a wide temperature range, T = 220–940 K. The rate constant of the reaction OH + ClNO → products was determined under pseudo-first order conditions, monitoring the kinetics of OH consumption in excess of ClNO: k _(1) = 1.48 × 10~(–18) × T ~(2.12) exp(146/ T ) cm~(3) molecule~(–1) s~(–1) (uncertainty of 15%). HOCl, Cl, and HONO were observed as the reaction products. As a result of quantitative detection of HOCl and Cl, the partial rate constants of the HOCl + NO and Cl + HONO forming reaction pathways were determined in the temperature range 220–940 K: k _(1a) = 3.64 × 10~(–18) × T~(1.99) exp(?114/ T ) and k _(1b) = 4.71 × 10~(–18) × T ~(1.74) exp(246/ T ) cm~(3) molecule~(–1) s~(–1) (uncertainty of 20%). The dynamics of the title reaction and, in particular, non-Arrhenius behavior observed for both k _(1a) and k _(1b) in a wide temperature range, seems to be an interesting topic for theoretical research.
机译：OH自由基与ClNO的反应的动力学和产品已经研究了近2托氦的总压力和在宽的温度范围内再加上电子冲击电离质谱仪流动反应器中，T = 220-940 K的反应速率常数OH + ClNO→产品被拟一级条件下确定，监测OH消费的动力学在过量ClNO的：K _（1）= 1.48×10〜（-18）×T〜（2.12） EXP（146 / T）厘米〜（3）分子〜（-1）S〜（ - 1）（15％的不确定性）。次氯酸，Cl和HONO观察作为反应产物。如次氯酸和Cl的定量检测结果，次氯酸+ NO和Cl + HONO形成反应途径的局部速率常数的温度范围内，测定220-940 K：K表_（1A）= 3.64×10〜（ - 18）×T〜（1.99）EXP（？114 / T）和k _（1B）= 4.71×10〜（-18）×T〜（1.74）EXP（246 / T）厘米〜（3）分子〜（ -1）S〜（ - 1）（20％的不确定性）。一种用于在宽的温度范围内都K表_（1A）和k _（1b）中所观察到的标题反应的和动态，特别是，非阿累尼乌斯行为，似乎是理论研究了一个有趣的课题。

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