论文部分内容阅读
The reaction of CH radical with O2 has been experimentally investigated by time-resolved Fourier trans-form IR emission spectroscopy. CH radicals were generated by multi-photon UV laser photolysis of bromoform (CHBr3) in gaseous phase. Highly vibrationally excited product CO (v =1—12) with a near Boltzmann distribution was observed after the reaction. The vibrational temperature of CO is es-timated as high as 144001400 K and the averaged vibra-tional energy is about 25.8 kcalmol-1. The emission intensity of CO is not sensitive to the quenching gas, which indicates that there is no early barrier in the reaction of CH+O2. However, the theoretically predicted product CO2 has not been found in the experiment.
The reaction of CH radical with O2 has been experimentally investigated by time-resolved Fourier trans-form IR emission spectroscopy. CH radicals were generated by multi-photon UV laser photolysis of bromoform (CHBr3) in gaseous phase. Highly vibrationally excited product CO (v = 1-12) with a near-Boltzmann distribution was observed after the reaction. The vibrational temperature of CO is es-timated as high as 144001400 K and the averaged vibra-tional energy is about 25.8 kcalmol- 1. The emission intensity of CO is not sensitive to the quenching gas, which indicates that there is no early barrier in the reaction of CH + O2. However, the theoretically predicted product CO2 has not been found in the experiment.