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 O-2 concentration 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 N-2 or NO at lower O-2 concentrations. Therefore, the conversion process is hindered by increasing the O-2 concentration. 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.

Automated summary

The study shows that lower O-2 concentrations in a high-temperature thermal reactor facilitate the conversion of N2O to N-2 or NO, while increasing O-2 concentration hinders the conversion process. By introducing a modified parameter, the experimental results align closely with the calculated results.