METHANE OXIDATION - EXPERIMENTAL AND KINETIC MODELING STUDY

Methane oxidation in jet-stirred reactor has been investigated at high temperature (900–1300 K) in the pressure range 1–10 atm. Molecular species (H2, CO, CO2, CH4, C2H2, C2H4, C2H6) concentration profiles were obtained by probe sampling and GC analysis. Methane oxidation was modeled using a detailed kinetic reaction mechanism including the most recent kinetic findings concerning the reactions involved in the oxidation of C1-C4 hydrocarbons. The proposed mechanism is able to reproduce experimental data obtained in our high-pressure jet stirred reactor and ignition delay times measured in shock tube in the pressure range 1–13 atm, for temperatures extending from 900 to 2000 K and equivalence ratios of 0.1 to 2. It is able to correctly reproduce H and O atoms concentrations measured in shock tube at ≈ 2 atm at 1850–2500 K. The same kinetic mechanism can also be used to model the oxidation of ethylene, ethane, propyne and allene in various conditions. © 1991, Taylor & Francis Group, LLC. All rights reserved.