New Insights on N2O Formation Pathways during Lean/Rich Cycling of a Commercial Lean NOx Trap Catalyst

We clarified N₂O formation pathways by analyzing surface and gas-phase chemistry of a commercial lean NO_x trap catalyst under relevant lean/rich cycling conditions. The results highlight the importance of understanding spatiotemporal evolution of PGM redox state and formation and oxidation of N- and C-containing intermediates in developing LNT kinetic models.