Local Catalytic Ignition during CO Oxidation on Low-Index Pt and Pd Surfaces: A Combined PEEM, MS, and DFT Study
Artikel i vetenskaplig tidskrift, 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
Författare
D. Vogel
Max-Planck-Gesellschaft
Technische Universität Wien
C. Spiel
Technische Universität Wien
Y. Suchorski
Technische Universität Wien
Adriana Trinchero
Kompetenscentrum katalys
Chalmers, Teknisk fysik, Kemisk fysik
R. Schlogl
Max-Planck-Gesellschaft
Henrik Grönbeck
Chalmers, Teknisk fysik, Kemisk fysik
Kompetenscentrum katalys
G. Rupprechter
Technische Universität Wien
Angewandte Chemie - International Edition
1433-7851 (ISSN) 1521-3773 (eISSN)
Vol. 51 40 10041-10044Ämneskategorier
Kemi
DOI
10.1002/anie.201204031