title: Identification of combustion intermediates in low-pressure premixed pyridine/oxygen/argon flames.
abstract: 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.
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People's Republic of China.
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Tian
authors.forename: Yuyang
authors.initials: Y
authors.lastname: Li
authors.forename: Taichang
authors.initials: T
authors.lastname: Zhang
authors.forename: Aiguo
authors.initials: A
authors.lastname: Zhu
authors.forename: Fei
authors.initials: F
authors.lastname: Qi
mesh_terms: D001128:Argon / Q000737:chemistry*; D005609:Free Radicals / Q000032:analysis / Q000737:chemistry; D006838:Hydrocarbons / Q000032:analysis / Q000737:chemistry; D017745:Incineration; D013058:Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D009584:Nitrogen / Q000032:analysis / Q000737:chemistry; D017672:Nitrogen Compounds / Q000032:analysis / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry*; D011312:Pressure; D011725:Pyridines / Q000737:chemistry*; D017356:Synchrotrons; D014618:Vacuum; D014835:Volatilization
chemical_list: D005609:Free Radicals; D006838:Hydrocarbons; D017672:Nitrogen Compounds; D011725:Pyridines; D001128:Argon; D009584:Nitrogen; C023666:pyridine; D010100:Oxygen