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- W2043472378 abstract "Shock-tube experiments on the high-temperature pyrolysis of phenol were performed in the temperature range from 1450 to 1650 K using atomic and molecular resonance absorption spectroscopy as probing tools. From the measurements, it was concluded that the dominating initiation step of the phenol pyrolysis is the molecular channel R1: C6H5OH-ix}C5H6+CO For the rate of reaction, an Arrhenius expression k1=1.0×1012 exp(−30,600/T)s−1 was deduced. The experimental data can be satisfactorily modeled if the coefficient for a secondary radical channel R1a: C6H5OH-ix}C6H5O+H does not exceed the value of 0.15 k1. At temperatures below 1510 K, there exists very good agreement between measured and computed results over the whole observation time: at higher temperatures, the calculated H concentrations exceeded the experimental ones at 800 μs by up to 50%. This might be due to uncertainties of the rate constants of the propargyl radical. The reaction of phenol with H atoms using ethyl iodide as precursor for H atoms has also been investigated. The experimental data compare very well with the sum of the rate coefficients for R2: C6H5OH+H-ix}C6H6+OH and R3: C6H5OH+H-ix}C6H5O+H2 given by He et al. [5]. A reaction mechanism consisting of 18 reactions to reproduce our experimental data is presented." @default.
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- W2043472378 date "1998-01-01" @default.
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- W2043472378 title "Shock-tube study on the high-temperature pyrolysis of phenol" @default.
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- W2043472378 doi "https://doi.org/10.1016/s0082-0784(98)80419-0" @default.
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