Interaction of NO2 with Model NSR Catalysts: Metal-Oxide Interaction Controls Initial NOx Storage Mechanism
Desikusumastuti A, Staudt T, Qin Z, Happel M, Laurin M, Lykhach Y, Shaikhutdinov S, Rohr F, Libuda J (2008)
Publication Status: Published
Publication Type: Journal article
Publication year: 2008
Journal
Publisher: WILEY-V C H VERLAG GMBH
Book Volume: 9
Pages Range: 2191-2197
Journal Issue: 15
Abstract
Using scanning tunneling microscopy (STM), molecular-beam (MB) methods and time-resolved infrared reflection absorption spectroscopy (TR-IRAS), we investigate the mechanism of initial NO, 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 No, 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.
Authors with CRIS profile
Markus Happel
Lehrstuhl für Physikalische Chemie II
Mathias Laurin
Lehrstuhl für Physikalische Chemie II
Yaroslava Lykhach
Lehrstuhl für Physikalische Chemie II
Jörg Libuda
Professur für Physikalische Chemie
Additional Organisation(s)
Involved external institutions
Fritz-Haber-Institut der Max-Planck-Gesellschaft (FHI)
Germany (DE)
Umicore AG & Co. KG
Germany (DE)
Germany (DE)
Umicore AG & Co. KG
Germany (DE)
How to cite
APA:
Desikusumastuti, A., Staudt, T., Qin, Z., Happel, M., Laurin, M., Lykhach, Y.,... Libuda, J. (2008). Interaction of NO2 with Model NSR Catalysts: Metal-Oxide Interaction Controls Initial NOx Storage Mechanism. ChemPhysChem, 9(15), 2191-2197. https://doi.org/10.1002/cphc.200800550
MLA:
Desikusumastuti, Aine, et al. "Interaction of NO2 with Model NSR Catalysts: Metal-Oxide Interaction Controls Initial NOx Storage Mechanism." ChemPhysChem 9.15 (2008): 2191-2197.
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