Kinetic study of the ClOO plus NO reaction using cavity ring-down spectroscopy

Kinetic study of the ClOO plus NO reaction using cavity ring-down spectroscopy
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DOI:
10.1021/jp052688d
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发表时间:
2006-03-16
影响因子:
2.9
通讯作者:
Wallington, TJ
Wallington, TJ
中科院分区:
化学3区
文献类型:
--
作者:
Enami, S;Hoshino, Y;Wallington, TJ

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在205-243 K,总压为50-150 Torr的O-2/N-2稀释剂中,用光腔衰荡光谱研究了ClOO与NO的反应。测定了213 K时k(ClOO+NO)=(4.5 +/- 0.9)× 10(-11)cm(3)molecule(-1)s(-1)的值(引用的不确定度为两个标准偏差)。ClOO + NO反应中NO2的产率在213 K为0.18 +/- 0.02,在223 K为0.15 +/- 0.02。在213 K时,k(ClOO+Cl-2)< 3.5 × 10(-14)cm(3)molecule(-1)s(-1)。结果进行了讨论相对于大气化学的ClOO和其他过氧自由基。
Cavity ring-down spectroscopy was used to study the reaction of ClOO with NO in 50-150 Torr total pressure Of O-2/N-2 diluent at 205-243 K. A value of k(ClOO+NO) = (4.5 +/- 0.9) x 10(-11) cm(3) molecule(-1) s(-1) at 213 K was determined (quoted uncertainties are two standard deviations). The yield of NO2 in the ClOO + NO reaction was 0.18 +/- 0.02 at 213 K and 0.15 +/- 0.02 at 223 K. An upper limit of k(ClOO+Cl-2) < 3.5 x 10(-14) cm(3) molecule(-1) s(-1) was established at 213 K. Results are discussed with respect to the atmospheric chemistry of ClOO and other peroxy radicals.