Experimental and kinetic modeling study of para-xylene chemistry in laminar premixed flames

摘要: Abstract The chemistry of para-xylene oxidation in laminar premixed flames has been analyzed using new experimental data on flame propagation at atmospheric pressure and structure low-pressure stoichiometric flame. Atmospheric burning velocities para-xylene + air were determined the heat flux method initial temperatures 328 353 K over equivalence ratio range ϕ = 0.7–1.4 ϕ = 0.7–1.3, respectively. Temperature mole fraction profiles reactants, final products, reactive stable intermediate species have measured CH4/O2/N2 CH4/1.5%C8H10/O2/N2 low (40 Torr) thermocouple, molecular beam/mass spectrometry, gas chromatography/mass spectrometry techniques. These results modeled with our previous model including sub-mechanisms for aromatics (benzene up to p-xylene) aliphatic (C1 C7) oxidation. Good agreement observed main analyzed. Moreover, chemical pathways common methane without 1.5% benzene or toluene investigated earlier under similar conditions analysed compared present doped para-xylene. Key reactions degradation identified discussed. Burning also reproduced by kinetic model.