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- W1999851867 abstract "Flow reactor experiments were done to study the decomposition of N2O at atmospheric pressure and in a temperature range of 600–1000°C. Dilute mixtures of N2O with H2, CH4, CO with and without oxygen with N2 as carrier gas were studied. To see directly the relative importance of the thermal decomposition versus the destruction by free radicals (i.e.: H, O, OH) iodine was added to the reactant mixture suppressing the radicals’ concentrations towards their equilibrium concentrations. The experimental results were discussed using a detailed chemistry model. This work shows that there are still some uncertainties regarding the kinetics of the thermal decomposition and the reaction between N2O and the O radical. Using the recommendations applied in this work for the reaction N2O + M ↔ N2 + O + M and for N2O + O ↔ products, a good agreement with the experimental data can be obtained over a wide range of experimental conditions. The reaction between N2O and OH is of minor importance under present conditions as stated in latest literature. The results show that N2O + H ↔ N2 + OH is the most important reaction in the destruction of N2O. In the presence of oxygen it competes with H + O2 + M ↔ HO2 + M and H + O2 ↔ O + OH, respectively. The importance of the thermal decomposition (N2O + M ↔ N2 + O + M) increases with residence time. Reducing conditions and a long residence time lead to a high potential in N2O reduction. Especially mixtures of H2/N2O and CO/H2O/N2O in nitrogen lead to a chain reaction mechanism causing a strong N2O reduction." @default.
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- W1999851867 date "2000-03-01" @default.
- W1999851867 modified "2023-09-23" @default.
- W1999851867 title "Decomposition of nitrous oxide at medium temperatures" @default.
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- W1999851867 doi "https://doi.org/10.1016/s0010-2180(99)00106-6" @default.
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