A Rh/Al system with rhodium nanocrystals was prepared by reducing rhodium trichloride supported on silica with lithium aluminum hydride at low temperature in THF. After pretreatment in Ar and in CO/H2 the system was found to be an active catalyst of vapour phase propene hydroformylation at atmospheric pressure. The nature and composition of the active surface was studied by X-ray diffraction, X-ray photoemission spectroscopy (XPS) and Fourier transform-IR spectroscopy. Regioselectivity and chemoselectivity data are correlated to the proposed nature and morphology of the active sites of the catalyst derived from spectroscopic data. The Rh/Al system is compared with the Rh/B system we described in preceding papers. © 1993.
Autori: | ||
Data di pubblicazione: | 1993 | |
Titolo: | Vapour phase propene hydroformylation catalyzed by the Rh/Al system on silica | |
Rivista: | JOURNAL OF MOLECULAR CATALYSIS | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/0304-5102(93)87113-M | |
Volume: | 80 | |
Appare nelle tipologie: | 2.1 Articolo su rivista |