INVESTIGADORES
QUIROGA monica Esther
artículos
Título:
Supported Wilkinson's complex used as a high active hydrogenation catalyst
Autor/es:
QUIROGA, MÓNICA ESTHER; CAGNOLA, EDGARDO; LIPRANDI, DOMINGO; L'ARGENTIERE, PABLO
Revista:
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam, The Netherlands; Año: 1999 vol. 149 p. 147 - 152
ISSN:
1381-1169
Resumen:
Supporting Wilkinson's complex on γ-Al2O3
rendered a high active catalyst for cyclohexene to cyclohexane
hydrogenation. The activity was higher than that of the same complex
unsupported, in the presence or absence of a S-containing poison
(tetrahydrothiophene). XPS results suggested that, after poisoning,
there was an insertion of a sulfur atom into the rhodium coordination
sphere. Comparison of Wilkinson's complex with other palladium and
nickel complexes was also made. The Wilkinson's complex proved to be
more active and sulfur resistant than the Pd and Ni complexes in both
homogeneous and heterogeneous conditions. For the Pd and Ni complexes
there was a change in the coordination sphere after poisoning, as shown
by the XPS results.