Adsorption and bonding of 2-butenal on Sn/Pt surface alloys
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
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.
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
IdentifiersURN: urn:nbn:se:kth:diva-22533DOI: 10.1016/s0021-9517(03)00016-2ISI: 000183219300007OAI: oai:DiVA.org:kth-22533DiVA: diva2:341231
QC 20100525 QC 201112052010-08-102010-08-102011-12-05Bibliographically approved