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류시옥,신권수,황순묵 대한화학회 2017 Bulletin of the Korean Chemical Society Vol.38 No.2
Rate coefficients of the title reactions, R1 (CH4 + O2 → HO2 + CH3) and R2 (HCO + O2 → HO2 + CO) were obtained over T = 1610 ~ 1810 K and T = 200 ~ 1760 K, respectively, and at ρ = 7.1 µmol/cm3. A lean CH4/O2/Ar mixture (0.1% CH4, ϕ = 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 k1 and k2 values in the reaction simulation. The rate coefficient expressions derived are k1 = 1.46 × 1014 exp (−26 210 K/T) cm3/mol/s, T = 1610 ~ 1810 K and k2 = 1.9 × 1012 T0.176 exp (−245 K/T) cm3/mol/s, T = 200 ~ 1760 K.
류시옥,이승철,송병수,황순묵 영남대학교 공업기술연구소 2001 工業技術硏究所論文集 Vol.29 No.1
Study on the ignition of methane fuel system highly diluted with argon was carried out in the temperature range of 1515∼1905K behind a reflected shock wave to investigate the rate coefficients for the reaction CH3+O2=CH3O+O. Ignition delay times were measured by monitoring the light absorption by methyl radical at ca. 214nm and pressure profiles. Computer modeling study of methane oxidation was also performed using a GRI_MECH, version 2.11 mechanism for sensitivity analysis and calculation of ignition delay times. The correlation of τp with the maximum heat release rate (dq/dt)max in the reaction zone was also investigated.