Formation of soot particles in pyrolysis and oxidation of aliphatic and aromatic hydrocarbons: Experiments and detailed kinetic modeling

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• 作者：G. L. Agafonov ; I. V. Bilera ; P. A. Vlasov…
• 关键词：pyrolysis ; soot formation ; spectroscopic measurements ; condensation ; shock waves ; chemical kinetics ; numerical simulation
• 刊名：Russian Journal of Physical Chemistry B, Focus on Physics
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：10
• 期：4
• 页码：587-594
• 全文大小：758 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Physical Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1990-7923
• 卷排序：10

文摘

Experiments on pyrolysis and oxidation of rich mixtures of various aliphatic and simple aromatic hydrocarbons in reflected shock waves have been performed. The mixtures C₂H₂/Ar, C₂H₆/Ar, C₂H₄/Ar, C₂H₄/O₂/Ar, CH₄/Ar, CH₄/O₂/Ar, C₃H₈/Ar, C₃H₆/Ar, toluene/Ar, and benzene/Ar were studied. The yield of soot and the temperature of soot particles were determined experimentally by the double-beam absorption emission method. The kinetic model of soot formation during the pyrolysis and oxidation of rich mixtures of aliphatic and aromatic hydrocarbons complemented with a set of nucleations of soot particles from both polyaromatic fragments and unsaturated aliphatic hydrocarbons was suggested. This kinetic model of soot formation was successfully tested. It describes the experimental literature data on the yield of the products of pyrolysis and oxidation of acetylene and diacetylene in a shock tube. The results of our experiments and kinetic calculations of the time, temperature, and concentration dependences are in good agreement for all hydrocarbons under study. All the kinetic parameters of the model remained strictly constant.