Abstract
The hydrogenation of crotonaldehyde was studied over five catalysts with platinum as the major catalytically active component. The catalytic activity for hydrogenation of the C=O bond decreased in the order PtGa/SiO2>Pt/Ti02>PtSn/TiO2>PtNi/Si02. Pt/SiOa was one order of magnitude less active than the other catalysts investigated and catalyzed only the hydrogenation of the C=C bond. Two different types of sites were concluded to be active for C=O bond hydrogenation, i.e., (i) the metal-oxide-interface (i.e. Pt-TiOx and Pt-GaOx) and (ii) bimetallic moieties as in Pt-Sn and Pt-Ni with a small positive charge on the less noble constituent. Hydrogenation of the C=C bond was concluded to occur primarily on the pure metal surfaces.
Original language | English |
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Pages (from-to) | 211-218 |
Number of pages | 8 |
Journal | Studies in surface science and catalysis |
Volume | 78 |
DOIs | |
Publication status | Published - 1 Jan 1993 |
Externally published | Yes |
Keywords
- n/a OA procedure