VAPOR-PHASE PROPENE HYDROFORMYLATION CATALYZED BY THE RH/AL SYSTEM ON SILICA

Lenarda, M; Ganzerla, R; Enzo, Stefano; Storaro, L; Zanoni, R; RI Zanoni Robertino/A 1742 2008,

doi:10.1016/0304-5102(93)87113-M

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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/H-2 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.

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Titolo:	VAPOR-PHASE PROPENE HYDROFORMYLATION CATALYZED BY THE RH/AL SYSTEM ON SILICA
Autori:	LENARDA M GANZERLA R ENZO, Stefano STORARO L ZANONI R RI Zanoni Robertino/A 1742 2008 mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	1993
Rivista:	JOURNAL OF MOLECULAR CATALYSIS
Abstract:	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/H-2 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.
Handle:	http://hdl.handle.net/11388/48093
Appare nelle tipologie:	1.1 Articolo in rivista

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