Synchrotron Photoionization Study of Mesitylene Oxidation Initiated by Reaction with Cl(2P) or O(3P) Radicals

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• 作者：Martin Y. Ng ; Jordan Nelson ; Craig A. Taatjes ; David L. Osborn ; Giovanni Meloni
• 刊名：Journal of Physical Chemistry A
• 出版年：2014
• 出版时间：May 29, 2014
• 年：2014
• 卷：118
• 期：21
• 页码：3735-3748
• 全文大小：622K
• 年卷期：v.118,no.21(May 29, 2014)
• ISSN：1520-5215

文摘

This work studies the oxidation of mesitylene (1,3,5-trimethylbenzene) initiated by O(³P) or Cl(²P) atoms. The O(³P) initiated mesitylene oxidation was investigated at room temperature and 823 K, whereas the Cl-initiated reaction was carried out at room temperature only. Products were probed by a multiplexed chemical kinetics photoionization mass spectrometer using the synchrotron radiation produced at the Advanced Light Source (ALS) of Lawrence Berkeley National Laboratory. Reaction products and intermediates are identified on the basis of their time behavior, mass-to-charge ratio, ionization energies, and photoionization spectra. Branching yields are derived for the O-initiated reaction at 823 K and the Cl-initiated reaction at room temperature. Reaction schematics are proposed and presented.