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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Rate Constants and H-Atom Product Yields for the Reactions of (OD)-D-(1) Atoms with Ethane and Acetylene from 50 to 296 K
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Rate Constants and H-Atom Product Yields for the Reactions of (OD)-D-(1) Atoms with Ethane and Acetylene from 50 to 296 K

机译：率常数和H-原子产物产生（OD） - （1）原子的反应，其中50至296 k乙烷和乙炔

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摘要

The gas phase reactions of atomic oxygen in its first excited state with ethane and acetylene have been investigated in a continuous supersonic flow reactor over the temperature range from 50 to 296 K. O(D-1) atoms were produced by the pulsed laser photolysis of ozone at 266 nm. Two different types of experiments, kinetics measurements and H-atom product yield determinations, were performed by detecting O(D-1) atoms and H(S-2) atoms, respectively, by vacuum ultraviolet laser-induced fluorescence. The measured rate constants are in agreement with previous work at room temperature, and little or no temperature dependence was observed as the temperature was decreased to 5O K. H-atom yields were found to be independent of temperature for the reaction of O(D-1) with ethane. These product yields are discussed in the context of earlier dvnamics measurements at higher temperature. Due to the influence of secondary reactions, no H-atom yields could be obtained for the reaction of O(D-1) with acetylene.
机译：已经在连续的超声波流体反应器中在50至296k的连续超声波流量反应器中研究了原子氧在其第一激发态的气相反应在50至296k.0（D-1）原子上通过脉冲激光光学分析臭氧在266纳米。通过真空紫外激光诱导的荧光检测O（D-1）原子和H（S-2）原子，通过检测O（D-1）原子和H（S-2）原子来进行两种不同类型的实验，动力学测量和H-原子产量确定。测量的速率常数与在室温下以前的工作一致，并且观察到温度降低至50k的温度依赖性少或没有温度依赖性。发现H-原子收率与O（D-）的反应无关1）用乙烷。在更高温度下的较早的DVNICICS测量的背景下讨论了这些产品产量。由于二次反应的影响，可以获得O（D-1）与乙炔的反应获得H-原子产率。

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