TY - JOUR
AU - Libuda, Jörg
AB - Using scanning tunneling microscopy (STM), molecular‐beam (MB) methods and time‐resolved infrared reflection absorption spectroscopy (TR‐IRAS), we investigate the mechanism of initial NOx uptake on a model nitrogen storage and reduction (NSR) catalyst. The model system is prepared by co‐deposition of Pd metal particles and Ba‐containing oxide particles onto an ordered alumina film on NiAl(110). We show that the metal–oxide interaction between the active noble metal particles and the NOx storage compound in NSR model catalysts plays an important role in the reaction mechanism. We suggest that strong interaction facilitates reverse spillover of activated oxygen species from the NOx storage compound to the metal. This process leads to partial oxidation of the metal nanoparticles and simultaneous stabilization of the surface nitrite intermediate.
TI - Interaction of NO 2 with Model NSR Catalysts: Metal–Oxide Interaction Controls Initial NO x Storage Mechanism
JF - ChemPhysChem
DO - 10.1002/cphc.200800550
DA - 2008-10-24
UR - https://www.deepdyve.com/lp/wiley/interaction-of-no-2-with-model-nsr-catalysts-metal-oxide-interaction-oIBFbea1wl
SP - 2191
EP - 2197
VL - 9
IS - 15
DP - DeepDyve
ER -