Interaction of NO2 with Model NSR Catalysts: Metal-Oxide Interaction Controls Initial NOx Storage Mechanism

Journal article


Publication Details

Author(s): Desikusumastuti A, Staudt T, Qin Z, Happel M, Laurin M, Lykhach Y, Shaikhutdinov S, Rohr F, Libuda J
Journal: Chemphyschem
Publisher: WILEY-V C H VERLAG GMBH
Publication year: 2008
Volume: 9
Journal issue: 15
Pages range: 2191-2197
ISSN: 1439-4235


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.


FAU Authors / FAU Editors

Happel, Markus
Laurin, Mathias Dr.
Lehrstuhl für Physikalische Chemie II
Lehrstuhl für Physikalische Chemie II
Libuda, Jörg Prof. Dr.
Professur für Physikalische Chemie
Lykhach, Yaroslava
Lehrstuhl für Physikalische Chemie II


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions with authors

Fritz-Haber-Institut der Max-Planck-Gesellschaft (FHI)
Umicore AG & Co. KG


Research Fields

D Catalytic Materials
Exzellenz-Cluster Engineering of Advanced Materials


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://dx.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.

BibTeX: 

Last updated on 2019-22-07 at 07:34