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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Rate Constants for the Reactions of a Series of Alkylperoxy Radicals with NO
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Rate Constants for the Reactions of a Series of Alkylperoxy Radicals with NO

机译：一系列烷基过氧自由基与NO反应的速率常数

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摘要

The rate constants for the gas-phase reactions of isopropyl- and tert-bulylperoxy radicals with nitric oxide (NO) have been studied at 298+-2 K and a total pressure of 3-4 Torr (He buffer) using a laser flash photolysis technique coupled with a time-resolved negative-ionization mass spectrometry.The alkyl peroxy radicals were generated by the reaction of alkyl radicals with excess O_2,where alkyl radicals were prepared by laser photolysis of several precursor molecules.The rate constants were determined to be kappa(i-C_3H_7O_2+NO)=(8.0+-1.5) x 10~(-12) and kappa(t-C_4H_9O_2+NO)=(8.6+-1.4) x 10~(-12) cm~3 molecule~(-1) s~(-1).The results in combination with our previous studies are discussed in terms of the systematic reactivity of alkyl peroxy radicals toward NO.
机译：异丙基和叔丁基过氧自由基与一氧化氮（NO）气相反应的速率常数已通过激光闪光光解法在298 + -2 K和总压力3-4 Torr（He缓冲液）下研究技术与时间分辨负离子质谱联用（i-C_3H_7O_2 + NO）=（8.0 + -1.5）x 10〜（-12）和kappa（t-C_4H_9O_2 + NO）=（8.6 + -1.4）x 10〜（-12）cm〜3分子〜（ -1）s〜（-1）。结合烷基过氧自由基对NO的系统反应性，结合先前的研究结果进行了讨论。

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