Kinetic hindrance during the initial oxidation of Pd(100) at ambient pressures
(2004) In Physical Review Letters 92(4).- Abstract
- The oxidation of the Pd(100) surface at oxygen pressures in the 10(-6) to 10(3) mbar range and temperatures up to 1000 K has been studied in situ by surface x-ray diffraction (SXRD). The results provide direct structural information on the phases present in the surface region and on the kinetics of the oxide formation. Depending on the (T,p) environmental conditions, we observe either a thin (root5 x root5)R27degrees surface oxide or the growth of a rough, poorly ordered bulk oxide film of PdO predominantly with (001) orientation. By either comparison to the surface phase diagram from first-principles atomistic thermodynamics or by explicit time-resolved measurements we identify a strong kinetic hindrance to the bulk oxide formation even... (More)
- The oxidation of the Pd(100) surface at oxygen pressures in the 10(-6) to 10(3) mbar range and temperatures up to 1000 K has been studied in situ by surface x-ray diffraction (SXRD). The results provide direct structural information on the phases present in the surface region and on the kinetics of the oxide formation. Depending on the (T,p) environmental conditions, we observe either a thin (root5 x root5)R27degrees surface oxide or the growth of a rough, poorly ordered bulk oxide film of PdO predominantly with (001) orientation. By either comparison to the surface phase diagram from first-principles atomistic thermodynamics or by explicit time-resolved measurements we identify a strong kinetic hindrance to the bulk oxide formation even at temperatures as high as 675 K. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/288554
- author
- Lundgren, Edvin LU ; Gustafson, Johan LU ; Mikkelsen, Anders LU ; Andersen, Jesper N LU ; Stierle, A ; Dosch, H ; Todorova, M ; Rogal, J ; Reuter, K and Scheffler, M
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 92
- issue
- 4
- article number
- 046101
- publisher
- American Physical Society
- external identifiers
-
- wos:000188747600035
- scopus:7044232265
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.92.046101
- language
- English
- LU publication?
- yes
- id
- 2e0ff66c-1c1a-4aa9-b529-9698bfb88c18 (old id 288554)
- date added to LUP
- 2016-04-01 11:39:00
- date last changed
- 2022-02-25 19:18:41
@article{2e0ff66c-1c1a-4aa9-b529-9698bfb88c18, abstract = {{The oxidation of the Pd(100) surface at oxygen pressures in the 10(-6) to 10(3) mbar range and temperatures up to 1000 K has been studied in situ by surface x-ray diffraction (SXRD). The results provide direct structural information on the phases present in the surface region and on the kinetics of the oxide formation. Depending on the (T,p) environmental conditions, we observe either a thin (root5 x root5)R27degrees surface oxide or the growth of a rough, poorly ordered bulk oxide film of PdO predominantly with (001) orientation. By either comparison to the surface phase diagram from first-principles atomistic thermodynamics or by explicit time-resolved measurements we identify a strong kinetic hindrance to the bulk oxide formation even at temperatures as high as 675 K.}}, author = {{Lundgren, Edvin and Gustafson, Johan and Mikkelsen, Anders and Andersen, Jesper N and Stierle, A and Dosch, H and Todorova, M and Rogal, J and Reuter, K and Scheffler, M}}, issn = {{1079-7114}}, language = {{eng}}, number = {{4}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Kinetic hindrance during the initial oxidation of Pd(100) at ambient pressures}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.92.046101}}, doi = {{10.1103/PhysRevLett.92.046101}}, volume = {{92}}, year = {{2004}}, }