Reaction of CH radical with O2 by time-resolved FTIR spectroscopy

被引：2
作者：
Ren, L
Kong, FN [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2003年 / 48卷 / 12期
基金：
中国国家自然科学基金;
关键词：
CH radical; time-resolved Fourier transform; IR emission; CO; CO2;
D O I：
10.1360/02wb0219
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The reaction of CH radical with O-2 has been experimentally investigated by time-resolved Fourier transform IR emission spectroscopy. CH radicals were generated by multi-photon UV laser photolysis of bromoform (CHBr3) in gaseous phase. Highly vibrationally excited product CO (nu=1-12) with a near Boltzmann distribution was observed after the reaction. The vibrational temperature of CO is estimated as high as 14400 1400 K and the averaged vibrational energy is about 25.8 kcal.mol(-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+O-2. However, the theoretically predicted product CO2 has not been found in the experiment.
引用
收藏
页码：1225 / 1229
页数：5
相关论文
共 24 条
  • [1] FAST-FLOW STUDIES OF CH RADICAL KINETICS AT 290-K
    ANDERSON, SM
    FREEDMAN, A
    KOLB, CE
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (24) : 6272 - 6277
  • [2] Barin I., 1989, THERMOCHEMICAL DATA
  • [3] RATE CONSTANTS FOR CH(X2PI) REACTIONS AT LOW TOTAL PRESSURES
    BECKER, KH
    ENGELHARDT, B
    WIESEN, P
    BAYES, KD
    [J]. CHEMICAL PHYSICS LETTERS, 1989, 154 (04) : 342 - 348
  • [4] BERMAN MR, 1982, 19TH S INT COMB PITT, P73
  • [5] BOCHEREL P, 1996, J PHYS CHEM-US, V100, P3036
  • [6] A SHOCK-TUBE STUDY OF REACTIONS OF C ATOMS AND CH WITH NO INCLUDING PRODUCT CHANNEL MEASUREMENTS
    DEAN, AJ
    HANSON, RK
    BOWMAN, CT
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (08) : 3180 - 3189
  • [7] FENIMORE CP, 1971, 13 S INT COMB COMB I, P373
  • [8] Theoretical study of CH+O2 reactions
    Huang, MB
    Chen, BZ
    Wang, ZX
    [J]. JOURNAL OF PHYSICAL CHEMISTRY A, 2002, 106 (22) : 5490 - 5497
  • [9] KULDA K, 1991, J CHEM PHYS, V95, P1635
  • [10] NH(A-3-PI-]X-3-SIGMA-) CHEMI-LUMINESCENCE FROM THE CH(X-2-PI) + NO REACTION
    LICHTIN, DA
    BERMAN, MR
    LIN, MC
    [J]. CHEMICAL PHYSICS LETTERS, 1984, 108 (01) : 18 - 24
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