Identification of Combustion Intermediates in Low-Pressure Premixed Pyridine/Oxygen/Argon Flames
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- 作者：Zhenyu Tian ; Yuyang Li ; Taichang Zhang ; Aiguo Zhu ; Fei Qi
- 刊名：Journal of Physical Chemistry A
- 出版年：2008
- 出版时间：December 25, 2008
- 年：2008
- 卷：112
- 期：51
- 页码：13549-13555
- 全文大小：242K
- 年卷期：v.112,no.51(December 25, 2008)
- ISSN：1520-5215
文摘
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 NOx in flames of nitrogenous fuels.