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Identification of Combustion Intermediates in Low-Pressure Premixed Pyridine/Oxygen/Argon Flames

机译:低压预混合吡啶/氧气/氩气火焰中燃烧中间体的鉴定

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摘要

Combustion intermediates of two low-pressure premixed pyridine/oxygen flames with respective equivalence ratios of 0.56(C/O/N=1:4.83:0.20)and 2.10(C/O/N=1:1.29:0.20)have been identified with tunable synchrotron vacuum ultraviolet(VUV)photoionization and molecular-beam mass spectrometry techniques.About 80 intermediates in the rich flame and 60 intermediates in the lean flame,including nitrogenous,oxygenated,and hydrocarbon intermediates,have been identified by measurements of photoionization mass spectra and photoionization efficiency spectra.Some radicals and new nitrogenous intermediates are identified in the present work.The experimental results are useful for studying the conversion of volatile nitrogen compounds and understanding the formation mechanism of NO_x in flames of nitrogenous fuels.
机译:已确定两个当量比分别为0.56(C / O / N = 1:4.83:0.20)和2.10(C / O / N = 1:1.29:0.20)的低压预混合吡啶/氧气火焰的燃烧中间体可调同步加速器真空紫外(VUV)光电离和分子束质谱技术。通过测量光电离质谱和质谱,已鉴定出浓火焰中约80种中间体和稀火焰中60种中间体,包括含氮,氧化和烃类中间体。本研究确定了一些自由基和新的含氮中间体。实验结果对于研究挥发性氮化合物的转化以及了解含氮燃料火焰中NO_x的形成机理很有帮助。

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