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.
platinum
CO oxidation
pd(110)
reaction-kinetics
photoemission electron
DFT calculations
heterogeneous catalysis
catalytic ignition
Author
D. Vogel
Max Planck Society
Vienna University of Technology
C. Spiel
Vienna University of Technology
Y. Suchorski
Vienna University of Technology
Adriana Trinchero
Competence Centre for Catalysis (KCK)
Chalmers, Applied Physics, Chemical Physics
R. Schlogl
Max Planck Society
Henrik Grönbeck
Chalmers, Applied Physics, Chemical Physics
Competence Centre for Catalysis (KCK)
G. Rupprechter
Vienna University of Technology
Angewandte Chemie - International Edition
1433-7851 (ISSN) 1521-3773 (eISSN)
Vol. 51 40 10041-10044Subject Categories
Chemical Sciences
DOI
10.1002/anie.201204031