Search: onr:"swepub:oai:lup.lub.lu.se:409127ce-f112-4784-8370-1a2c289fb238" >
Structure and catal...
-
Gustafson, JohanLund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
(author)
Structure and catalytic reactivity of Rh oxides
- Article/chapterEnglish2009
Publisher, publication year, extent ...
Numbers
-
LIBRIS-ID:oai:lup.lub.lu.se:409127ce-f112-4784-8370-1a2c289fb238
-
https://lup.lub.lu.se/record/1477366URI
-
https://doi.org/10.1016/j.cattod.2008.11.011DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:kon swepub-publicationtype
-
Subject category:ref swepub-contenttype
Notes
-
Using a combination of experimental and theoretical techniques, we show that a thin RhO2 surface oxide film forms prior to the bulk Rh2O3 corundum oxide on all close-packed single crystal Rh surfaces. Based on previous reports, we argue that the RhO2 surface oxide also forms on vicinal Rh surfaces as well as on Rh nanoparticles. The detailed structure of this film was previously determined using UHV based techniques and density functional theory. In the present paper, we also examine the structure of the bulk Rh2O3 corundum oxide using surface X-ray diffraction. Being armed with this structural information, we have explored the CO oxidation reaction over Rh(1 1 1), Rh(1 0 0) and Pt25Rh75(1 0 0) at realistic pressures using in situ surface X-ray diffraction and online mass spectrometry. In all three cases we find that an increase of the CO2 production coincides with the formation of the thin RhO2 surface oxide film. In the case of Pt25Rh75(1 0 0), our measurements demonstrate that the formation of bulk Rh2O3 corundum oxide poisons the reaction, and argue that this is also valid for all other Rh surfaces. Our study implies that the CO oxidation reaction over Rh surfaces at realistic conditions is insensitive to the exact Rh substrate orientation, but is rather governed by the formation of a specific surface oxide phase. (C) 2008 Elsevier B.V. All rights reserved.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Westerström, RasmusLund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ra6430we
(author)
-
Resta, AndreaLund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)slju-are
(author)
-
Mikkelsen, AndersLund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)slju-ami
(author)
-
Andersen, Jesper NLund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)slju-jan
(author)
-
Balmes, O.
(author)
-
Torrelles, X.
(author)
-
Schmid, M.
(author)
-
Varga, P.
(author)
-
Hammer, B.
(author)
-
Kresse, G.
(author)
-
Baddeley, C. J.
(author)
-
Lundgren, EdvinLund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)slju-elu
(author)
-
SynkrotronljusfysikFysiska institutionen
(creator_code:org_t)
Related titles
-
In:Catalysis Today: Elsevier BV145:3-4, s. 227-2350920-5861
Internet link
Find in a library
To the university's database
- By the author/editor
-
Gustafson, Johan
-
Westerström, Ras ...
-
Resta, Andrea
-
Mikkelsen, Ander ...
-
Andersen, Jesper ...
-
Balmes, O.
-
show more...
-
Torrelles, X.
-
Schmid, M.
-
Varga, P.
-
Hammer, B.
-
Kresse, G.
-
Baddeley, C. J.
-
Lundgren, Edvin
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Atom and Molecul ...
- Articles in the publication
-
Catalysis Today
- By the university
-
Lund University