A shock-tube investigation of the high-temperature oxidation of methanol
A shock-tube investigation of the high-temperature oxidation of methanol
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DOI：
10.1016/0010-2180(75)90106-6
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发表时间：
1975-08
影响因子：
4.4
通讯作者：
C. Bowman
中科院分区：
文献类型：
--
作者：
C. Bowman
The oxidation of methanol behind reflected shock waves has been studied in the temperature range 1545–2180° K. During reaction, the concentrations of O, OH, H 2 O and CO were measured using various spectroscopic techniques. Following shock-heating, oxidation appears to proceed through two distinct phases—an induction period, in which the concentrations of radical species and water increase rapidly with little change in temperature, followed by exothermic reaction with the concentrations of radical species and water slowly approaching equilibrium values. The initial stages of reaction were characterized by the time, t max, between shock-heating and the attainment of the maximum of the product of the CO and O-atom concentrations. For most of the experiments, measured t max-values were found to correlate with initial methanol and oxygen concentrations and with initial temperature by t max C 0.5 oxygen C 0.1 methanol= 2.1× 10− 13 exp (151.5 kJ/RT) sec·(mole/cm 3) 0.6 To obtain information on the methanol oxidation mechanism, measured t max-values were compared with results obtained from computer modelling of the reaction. A 19-reaction mechanism is proposed which gives relatively good agreement between calculated and measured concentration profiles. Reactions that significantly influence calculated concentration profiles include thermal decomposition of methanol, attack of the radicals O, OH and H on methanol and thermal decomposition of the intermediate species CH 2 OH.
