Local Catalytic Ignition during CO Oxidation on Low-Index Pt and Pd Surfaces: A Combined PEEM, MS, and DFT Study
Journal article, 2012
Shedding light on light-off: Photoemission electron microscopy, DFT, and microkinetic modeling were used to examine the local kinetics in the CO oxidation on individual grains of a polycrystalline sample. It is demonstrated that catalytic ignition ("light-off") occurs easier on Pd(hkl) domains than on corresponding Pt(hkl) domains. The isothermal determination of kinetic transitions, commonly used in surface science, is fully consistent with the isobaric reactivity monitoring applied in technical catalysis. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
pd(110)
DFT calculations
reaction-kinetics
CO oxidation
heterogeneous catalysis
photoemission electron
platinum
catalytic ignition
Author
D. Vogel
Fritz Haber Institute of the Max Planck Society
Technische Universitat Wien
C. Spiel
Technische Universitat Wien
Y. Suchorski
Technische Universitat Wien
Adriana Trinchero
Chalmers, Applied Physics, Chemical Physics
Competence Centre for Catalysis (KCK)
R. Schlogl
Fritz Haber Institute of the Max Planck Society
Henrik Grönbeck
Chalmers, Applied Physics, Chemical Physics
Competence Centre for Catalysis (KCK)
G. Rupprechter
Technische Universitat Wien
Angewandte Chemie - International Edition
1433-7851 (ISSN) 1521-3773 (eISSN)
Vol. 51 40 10041-10044Subject Categories (SSIF 2011)
Chemical Sciences
DOI
10.1002/anie.201204031