Effect of the Oxygen Concentration and Temperature on Thermal Decomposition of N₂O in an Inert Gas

Nitrous oxide (N₂O) is one of the greenhouse gases that contribute to global warming. But, there are few methods for controlling N₂O directly. It is essential to reduce N₂O to solve environmental problems. In this study, we investigate the O₂concentration dependence of N₂O decomposition under an argon-based gas mixture in a high-temperature thermal reactor. The gas concentrations are calculated using CHEMKIN. The results confirm that more N₂O is converted to N₂or NO at lower O₂concentrations. Therefore, the conversion process is hindered by increasing the O₂concentration. We propose a modified parameter of N₂O decomposition, and it is employed in the CHEMKIN calculations. With the modified parameter, the experimental results are in a similar tendency to the calculated results.