二甲苯氧化反应的实验与模拟研究
Experimental and modeling study of the oxidation of xylenes
摘要：
本文介绍了二甲苯的三个异构体（邻，Meta，对二甲苯）的氧化的实验和模拟研究。对于每种化合物，点火延迟时间的烃-氧-氩混合物的燃料当量比从0.5到2的后面反射的冲击波的温度从1330到1800 K和压力从6.7到9巴测量。结果显示三种异构体的反应性相似。一个详细的动力学机制已被提出，再现我们的实验结果，以及一些文献中得到的数据在活塞流反应器中在1155 K，二甲苯的三种异构体之间的反应性表现出明显的差异。通过灵敏度和通量分析确定了主要的反应途径，并解释了反应性的差异。
英文摘要：
This paper describes an experimental and modeling study of the oxidation of the three isomers of xylene (ortho-, meta- and para-xylenes). For each compound, ignition delay times of hydrocarbon-oxygen-argon mixtures with fuel equivalence ratios from 0.5 to 2 were measured behind reflected shock waves for temperatures from 1330 to 1800 K and pressures from 6.7 to 9 bar. The results show a similar reactivity for the three isomers. A detailed kinetic mechanism has been proposed, which reproduces our experimental results, as well as some literature data obtained in a plug flow reactor at 1155 K showing a clear difference of reactivity between the three isomers of xylene. The main reaction paths have been determined by sensitivity and flux analyses and have allowed the differences of reactivity to be explained.
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