时间分辨红外发射光谱法对自由基反应的研究

在过去的 15年中 ,傅立叶变换红外发射光谱法广泛应用于研究气相自由基反应 .Sloan首先研究了O(1D)的反应 ,随后Leone和Hancock研究了O(3 P)的反应 .此后 ,孔繁敖和朱起鹤等研究了小自由基 ,包括CH、CH2 、CH3 、C2 H3 、C2 H5、C2 H、C3 H3 和C3 H5与O2 、NO、N2 O、NO2 等分子的反应。在红外光谱中观察到各个反应的初生产物和初步反应通道 ,和从头算的理论研究结合起来 ,这些反应的机理已基本弄清 .

The Studies of Free Radical Reactions by Using Time-resolved FTIR Emission Spectroscopy

In the past fifteen years, free radical reactions in the gaseous phase have been widely studied by time- resolved fourier transform spectroscopy. Sloan et al. first investigated O(1D) reactions and then Leone and Hancock groups studied O(3P) reactions. Later, Kong, Zhu et al. investigated small radical, including CH, CH 2, CH 3, C 2H 3, C 2H 5, C 2H, C 3H 3 and C 3H 5, reacting with the molecules of O 2, NO, N 2O, NO 2. For each reaction, nascent products and primary channels are observed in the IR spectrum. Combining with ab initio theoretical investigations, the reaction mechanisms are almost understood.