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Determination of the Rate Coefficients of the CH4 + O-2 -> HO2 + CH3 and HCO + O-2 -> HO2 + CO Reactions at High Temperatures
- Authors
- Ryu, Si-Ok; Shin, Kuan Soo; Hwang, Soon Muk
- Issue Date
- Feb-2017
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- Rate coefficient; Shock wave; High temperature
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.38, no.2, pp.228 - 236
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 38
- Number
- 2
- Start Page
- 228
- End Page
- 236
- ISSN
- 1229-5949
- Abstract
- 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.
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Related Researcher
- Shin, Kuan Soo
- College of Natural Sciences (Department of Chemistry)