Abstract
Nascent products of C2H3+O2 reaction have been studied by time-resolved FTIR emission spectroscopy. Vibrational excitation of reaction products H2CO, HCO, CO, and CO2 was observed, providing the evidence of existing two exothermic reaction channels: HCO+H2CO and CH3+CO2 for the reaction. The latter channel was firstly observed in the experiment. Simulation of the spectrum of the products reveals that the highest excitation of CO and CO2(ν3) at 5 μs is v=4 and 6, respectively; the branching ratio of the channel HCO+H2CO to the channel CH3+CO2 is estimated to be 17.
Published Version
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