Determination of the Rate Coefficients of the CH4 + O2 → HO2 + CH3 and HCO + O2 → HO2 + CO Reactions at High Temperatures

被引：9
作者：
Ryu, Si-Ok [1 ]
Shin, Kuan Soo [2 ,3 ]
Hwang, Soon Muk [4 ]
机构：
[1] Yeungnam Univ, Sch Chem Engn, Gyeongbuk 712749, South Korea
[2] Soongsil Univ, Dept Chem, Seoul 156743, South Korea
[3] Soongsil Univ, Dept Informat Commun Mat & Chem Convergence Techn, Seoul 156743, South Korea
[4] Sci Applicat Int Corp, 3000 Aerosp Pkwy, Brookpark, OH 44142 USA
来源：
BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2017年 / 38卷 / 02期
基金：
新加坡国家研究基金会;
关键词：
Rate coefficient; Shock wave; High temperature; EVALUATED KINETIC-DATA; RATE CONSTANTS; TEMPERATURE-DEPENDENCE; CHEMICAL-KINETICS; LASER PHOTOLYSIS; SHOCK-WAVES; HCO; COMBUSTION; FORMYL; DECOMPOSITION;
D O I：
10.1002/bkcs.11070
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Rate coefficients of the title reactions, R-1 (CH4 + O-2 -> HO2 + CH3) and R-2 (HCO + O-2 -> HO2 + CO) were obtained over T = 1610 - 1810 K and T = 200 - 1760 K, respectively, and at rho = 7.1 mu mol/cm(3). A lean CH4/O-2/Ar mixture (0.1% CH4, Phi = 0.02) was heated behind reflected shock waves and the temporal OH absorption profiles were measured using a laser absorption spectroscopy. Reaction rate coefficients were elucidated by matching the experimental profiles via optimization of K-1 and k(2) values in the reaction simulation. The rate coefficient expressions derived are k(1) = 1.46 x 10(14) exp (-26 210 K/T) cm(3)/mol/s, T = 1610 - 1810 K and k(2) = 1.9 x 10(12) T-0.176 exp (-245 K/T) cm(3)/mol/s, T=200 similar to 1760 K.
引用
收藏
页码：228 / 236
页数：9
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