Identification of Intermediates in Pyridine Pyrolysis with Molecular-beam Mass Spectrometry and Tunable Synchrotron VUV Photoionization  

作　　者：Xin Hong Tai-chang Zhang Li-dong Zhang Fei Qi 

机构地区：[1]National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

出　　处：《Chinese Journal of Chemical Physics》2009年第2期204-209,共6页化学物理学报（英文）

基　　金：Ⅴ. ACKNOWLEDGMENTS This work was supported by the Chinese Academy of Sciences, the Natural Science Foundation of China （No.20533040）, the National Basic Research Program of China （973） （No.2007CB815204m）, and the Ministry of Science and Technology of China （No.2007DFA61310）.

摘　　要：The pyrolysis of pyridine （5.26% pyridine in argon） was performed with tunable synchrotron vacuum ultraviolet photoionization and molecular-beam mass spectrometry technique at the temperature range of 1255-1765 K at 267 Pa. About 20 products and intermediates, containing major species H2, HCN, C2H2, C5H3N, C4H2, and C3H3N, were identified by near-threshold measurements of photoionization mass spectra and their mole fractions vs. temperatures were estimated. The major reaction pathways are analyzed based on the experimental observations.

关 键 词：Pyridine pyrolysis Intermediate Tunable synchrotron VUV photoionization Molecular-beam mass spectrometry 

分 类 号：O644[理学—物理化学]