Reaction of CH radical with O_2 by time-resolved FTIR spectroscopy  

作　　者：REN Li1,2 & KONG Fanao1 1. State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China Correspondence should be addressed to Kong Fanao (e-mail:Kong@ mrdlab.icas.ac.cn) 

出　　处：《Chinese Science Bulletin》2003年第12期1225-1229,共5页

摘　　要：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.

关 键 词：CH RADICAL TIME-RESOLVED FOURIER TRANSFORM IR emis-sion CO CO2. 

分 类 号：O657.3[理学—分析化学]