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- W2080641674 abstract "Reflected shock waves were used to heat N2O/C2H6/CO/Ar and N2O/CH4/CO/Ar mixtures to temperatures of 1875–2855 K at total concentrations of 5 × 1018 cm−3. Oxygen atom production was monitored via the flame band emission at 450 nm, and CO2 production was observed at 4.27 μm. These data were then compared to the results of numerical integration of the rate equations, using rate constant and mechanistic information obtained in earlier studies of H2 and CH2O oxidation under similar conditions. For the C2H6 mixture, it was possible to achieve good agreement between these calculations and the observed data using only one additional reaction O+CH3→CH2O+OH The calculations were insensitive to the precise value of the rate constant used, but the results are consistent with recent high temperature literature values. For the CH4 mixture, the best agreement was achieved using a recent high temperature value for O+CH4→CH3+OH The data indicated that this reaction has a markedly non-Arrhenius rate constant; use of a value based upon low temperature data gives results inconsistent with those observed. The CH4 system was insensitive to any other methane reaction rate constant. There was some experimental evidence to suggest an unsuspected complexity in methyl radical decay channels at the lowest temperatures observed. The mechanism/rate constant combination used here was then applied to the analysis of literature data for CH3 oxidation by O2. This analysis was designed to obtain a value for the rate constant of CH3+O2→CH2O+OH Results indicated that the most recent high temperature studies yield values consistent with the present analysis." @default.
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- W2080641674 date "1980-01-01" @default.
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- W2080641674 title "Shock tube studies of the N2O/CH4/CO/Ar and N2O/C2H6/CO/Ar systems" @default.
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- W2080641674 doi "https://doi.org/10.1016/0010-2180(80)90079-6" @default.
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