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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Combustion Intermediates in Fuel-Rich 1,4-Dioxane Flame Studied by Tunable Synchrotron Vacuum Ultraviolet Photoionization
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Combustion Intermediates in Fuel-Rich 1,4-Dioxane Flame Studied by Tunable Synchrotron Vacuum Ultraviolet Photoionization

机译：可调谐同步加速器真空紫外光电离研究富燃料的1,4-二恶烷火焰中的燃烧中间体

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摘要

Combustion intermediates of a cyclic oxygenated hydrocarbon, 1,4-dioxane, were studied with the tunable synchrotron vacuum ultraviolet photoionization and molecular-beam mass spectrometry (MBMS) technique. A fuel-rich premixed laminar 1,4-dioxane/O2/Ar flame at low pressure with an equivalence ratio of 1.80 was investigated in the present work. A total of 20 intermediates were observed, and their mole fraction profiles are calculated. Aromatic intermediates were not observed, and this was a prominent difference between the fuel-rich flames of 1,4-dioxane and previously studied noncyclic oxygenated hydrocarbons. The fuel-rich 1,4-dioxane flame could be divided into four zones, and formation routes of the intermediates were proposed.The discussion on the pollutant emissions showed that some light toxic molecules were produced from 1,4-dioxane combustion; however, toxic aromatics and soot emissions were possibly avoided.
机译：利用可调同步加速器真空紫外光电离和分子束质谱（MBMS）技术研究了环状含氧烃1,4-二恶烷的燃烧中间体。在本工作中，研究了低压下的当量比为1.80的富含燃料的预混合层流1,4-二恶烷/ O2 / Ar火焰。观察到总共20种中间体，并计算了它们的摩尔分数分布。未观察到芳族中间体，这是1,4-二恶烷的富燃料火焰与先前研究的非环状含氧烃之间的显着差异。富含燃料的1,4-二恶烷火焰可分为四个区域，并提出了中间体的形成途径。关于污染物排放的讨论表明，1,4-二恶烷燃烧会产生一些轻有毒的分子。但是，可以避免有毒的芳烃和烟尘排放。

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