In Situ X-Ray Photoelectron Spectroscopy of Model Catalysts: At the Edge of the Gap
(2013) In Physical Review Letters 110(11).- Abstract
- 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
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3765096
- author
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 110
- issue
- 11
- article number
- 117601
- publisher
- American Physical Society
- external identifiers
-
- wos:000316172500029
- scopus:84874973843
- pmid:25166577
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.110.117601
- language
- English
- LU publication?
- yes
- id
- 361dc41a-87e1-409c-8365-f6d074c7446d (old id 3765096)
- date added to LUP
- 2016-04-01 10:42:18
- date last changed
- 2023-11-10 03:15:27
@article{361dc41a-87e1-409c-8365-f6d074c7446d, abstract = {{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}}, author = {{Blomberg, Sara and Hoffmann, M. J. and Gustafson, Johan and Martin, Natalia and Fernandes, V. R. and Borg, A. and Liu, Z. and Chang, R. and Matera, S. and Reuter, K. and Lundgren, Edvin}}, issn = {{1079-7114}}, language = {{eng}}, number = {{11}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{In Situ X-Ray Photoelectron Spectroscopy of Model Catalysts: At the Edge of the Gap}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.110.117601}}, doi = {{10.1103/PhysRevLett.110.117601}}, volume = {{110}}, year = {{2013}}, }