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Adsorption and bonding of 2-butenal on Sn/Pt surface alloys
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0003-1631-4293
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2003 (English)In: Journal of Catalysis, ISSN 0021-9517, E-ISSN 1090-2694, Vol. 215, no 2, 245-253 p.Article in journal (Refereed) Published
Abstract [en]

The adsorption of 2-butenal on the Pt(111), Pt(111)Sn-(2 x 2), and Pt(111)Sn-(root3 x root3)R30degrees surfaces has been studied by high-resolution photoelectron spectroscopy and DFT calculations. On Pt(111) 2-butenal adsorbs at a threefold hollow in a eta(3)(C,C,O) configuration. A similar geometry is observed for Pt(111)Sn-(2 x 2), although the oxygen coordinates to tin instead of platinum. As the surface coverage of tin increases, as for Pt(111)Sn-(root3 x root3)R30degrees, the most stable adsorption geometry changes to eta(1)(O), where the carbonyl oxygen once again coordinates to tin. The carbonyl bond thus retains an activated character as Pt/Sn alloys are formed. The alkene/surface interaction is, however, dramatically influenced at increasing surface concentrations of tin.

Place, publisher, year, edition, pages
2003. Vol. 215, no 2, 245-253 p.
Keyword [en]
photoelectron spectroscopy, DFT, chemisorption, unsaturated aldehydes, platinum, low-index single-crystal surfaces, selective hydrogenation, sn-pt/sio2 catalysts, pt(111), sn, crotonaldehyde, chemisorption, spectroscopy, desorption, aldehydes, ethylene
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-22533DOI: 10.1016/s0021-9517(03)00016-2ISI: 000183219300007OAI: oai:DiVA.org:kth-22533DiVA: diva2:341231
Note
QC 20100525 QC 20111205Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Weissenrieder, Jonas

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