Abstract
The oxidation of n-propylcyclohexane has been studied in a jet-stirred reactor at atmospheric pressure. New experimental results have been obtained over the high temperature range 950-1250 K, and variable equivalence ratio (0.5< φ<1.5). Concentration profiles of reactants, stable intermediates and final products were obtained by probe sampling followed by on-line and off-line GC analyses. The oxidation of n-propylcyclohexane in these conditions was modeled using a detailed kinetic reaction mechanism (176 species and 1369 reactions, most of them reversible). Sensitivity analyses and reaction path analyses, based on species rates of reaction, were used to interpret the results. The routes involved in n-propylcyclohexane have been delineated: n-propylcyclohexane oxidation proceeds via H-atom abstraction forming seven distinct propyl-cyclohexyl radicals that react by p-scission yielding ethylene, propene, methylene-cyclohexane, cyclohexene, and 1-pentene. Further reactions of these intermediates yields the other products measured in this study.
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