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Edvin Lundgren. Portrait.

Edvin Lundgren

Professor

Edvin Lundgren. Portrait.

In Situ X-Ray Photoelectron Spectroscopy of Model Catalysts: At the Edge of the Gap

Author

  • Sara Blomberg
  • M. J. Hoffmann
  • Johan Gustafson
  • Natalia Martin
  • V. R. Fernandes
  • A. Borg
  • Z. Liu
  • R. Chang
  • S. Matera
  • K. Reuter
  • Edvin Lundgren
Show all

Summary, in English

We present high-pressure x-ray photoelectron spectroscopy (HP-XPS) and first-principles kinetic Monte Carlo study addressing the nature of the active surface in CO oxidation over Pd(100). Simultaneously measuring the chemical composition at the surface and in the near-surface gas phase, we reveal both O-covered pristine Pd(100) and a surface oxide as stable, highly active phases in the near-ambient regime accessible to HP-XPS. Surprisingly, no adsorbed CO can be detected during high CO2 production rates, which can be explained by a combination of a remarkably short residence time of the CO molecule on the surface and mass-transfer limitations in the present setup. DOI: 10.1103/PhysRevLett.110.117601

Department/s

  • Synchrotron Radiation Research
  • NanoLund: Centre for Nanoscience

Publishing year

2013

Language

English

Publication/Series

Physical Review Letters

Volume

110

Issue

11

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1079-7114