The authors would like to express their thanks to Dr. J. C. Bertolini, R. Gallezot, J. L. Duvaux, and I. Mutin for helpful discussions regarding X-ray photoeclectron spectroscopy and STEM experiments. J.-M. B. would like to express his best thanks to Prof. W. A. Herrmann for his kind hospitality in Munich and for helpful discussions.
Selective Hydrogenation of Esters to Alcohols with a Catalyst Prepared from Rh2O3, Sn(n-C4H9)4, and SiO2: Evidence for Site Isolation†
Article first published online: 30 DEC 2003
Copyright © 1989 by VCH Verlagsgesellschaft mbH, Germany
Angewandte Chemie International Edition in English
Volume 28, Issue 3, pages 347–349, March 1989
How to Cite
El Mansour, A., Candy, J. P., Bournonville, J. P., Ferretti, O. A. and Basset, J.-M. (1989), Selective Hydrogenation of Esters to Alcohols with a Catalyst Prepared from Rh2O3, Sn(n-C4H9)4, and SiO2: Evidence for Site Isolation. Angew. Chem. Int. Ed. Engl., 28: 347–349. doi: 10.1002/anie.198903471
- Issue published online: 30 DEC 2003
- Article first published online: 30 DEC 2003
- Manuscript Revised: 23 NOV 1988
- Manuscript Received: 28 JUL 1988
A cooperation of neighboring rhodium atoms in catalysis is prevented by the incorporation of tin atoms into the surface of an SiO2-supported rhodium catalyst in accord with equation (a). This manifests itself for example in the absence (IR) of bridged CO ligands after chemisorption of CO on the Rh/Sn/SiO2 catalyst, and leads to an increase in selectivity in the hydrogenation of ethyl acetate: The amount of ethanol increases from 57.2 (Sn/Rh = 0/1) to 97.2% (Sn/Rh = 1.7/1). At the same time the conversion of ethyl acetate increases from 1.32 to 4.66%.