Development of Detailed Surface Reaction Mechanism of CO/ NO/ O ₂ System for Three Way Catalyst Based on Gaseous and Surface Species Analyses

In this study, we determined the detailed reaction mechanism of CO/NO/O₂ for automotive three way catalysts. The N₂O formation process obtained from measurements of the reaction properties and the formation process of adsorbed NCO species obtained from surface analysis of platinum group metals were added to a previous detailed surface reaction mechanism. The computational accuracy of the developed reaction mechanism was verified by the one-dimensional simulation software BOOST, and it was found to be sufficient for any combination of platinum group metals and gas concentrations.