CAJ | 학술논문

用时间分辨傅立叶红外发射光谱的方法对H原子与CO2分子的碰撞动力学进行了实验研究.用紫外激光光解的方法分别制备出三个不同平动能为174.7、241.0和306.2 kJ/mol的氢原子,并引发H+CO2→OH+CO反应.观察到了反应的产物,即振动激发的CO(v≤2).同时也看到了在H原子与CO2分子的碰撞中发生高效的T-V能量转移.CO2的反对称伸缩模的最高振动能级为v=4化学反应与能量转移的速率之比大约为10.
용시간분변부립협홍외발사광보적방법대H원자여CO2분자적팽당동역학진행료실험연구.용자외격광광해적방법분별제비출삼개불동평동능위174.7、241.0화306.2 kJ/mol적경원자,병인발H+CO2→OH+CO반응.관찰도료반응적산물,즉진동격발적CO(v≤2).동시야간도료재H원자여CO2분자적팽당중발생고효적T-V능량전이.CO2적반대칭신축모적최고진동능급위v=4화학반응여능량전이적속솔지비대약위10.
Collisions between hot H atoms and CO2 molecules were studied experimentally by time-resolved Fourier transform infrared emission spectroscopy. H atoms with three translational energies, 174.7, 241.0 and 306.2 kJ/mol respectively, were generated by UV laser photolysis to initiate a chemical reaction of H+CO2→OH+CO. Vibrationally excited CO (v≤2) was observed in the spectrum, where CO was the prod uct of the reaction. The highly efficient T-V energy transfer from the hot H atoms to the CO2 was verified too. The highest vibrational level of v=4 in CO2 (v3) was found. Rate ratio of the chemical reaction to the energy transfer was estimated as 10.