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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Products from the Oxidation of Linear Isomers of Hexene
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Products from the Oxidation of Linear Isomers of Hexene

机译：己烯线性异构体的氧化产物

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摘要

The experimental study of the oxidation of the three linear isomers of hexene was performed in a quartz isothermal jet-stirred reactor (JSR) at temperatures ranging from 500 to 1100 K including the negative temperature coefficient (NTC) zone, at quasi-atmospheric pressure (1.07 bar), at a residence time of 2 s and with dilute stoichiometric mixtures. The fuel and reaction product mole fractions were measured using online gas chromatography. In the case of 1-hexene, the JSR has also been coupled through a molecular-beam sampling system to a reflectron time-of-flight mass spectrometer combined with tunable synchrotron vacuum ultraviolet photoionization. A difference of reactivity between the three fuels, which varies with the temperature range has been observed and is discussed according to the changes in the possible reaction pathways when the double bond is displaced. An enhanced importance of the reactions via the Waddington mechanism and of those of allylic radicals with HO_2 radicals can be noted for 2- and 3-hexenes compared to 1-hexene.
机译：在石英等温射流搅拌反应器（JSR）中，在500至1100 K的温度下（包括负温度系数（NTC）区），在准大气压下对己烯的三种线性异构体进行氧化的实验研究（ 1.07 bar），在2 s的停留时间下，使用稀释的化学计量混合物。使用在线气相色谱法测量燃料和反应产物的摩尔分数。在1-己烯的情况下，JSR还通过分子束采样系统与反射式飞行时间质谱仪结合可调谐同步加速器真空紫外光电离耦合。已经观察到三种燃料之间的反应性差异随温度范围而变化，并根据双键被置换时可能的反应路径的变化进行了讨论。与1-己烯相比，对于2-己烯和3-己烯而言，通过Waddington机理的反应以及具有HO_2自由基的烯丙基自由基的反应的重要性提高。

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