INVESTIGADORES
QUIROGA monica Esther
artículos
Título:
LOW METAL LOADING CATALYSTS USED FOR THE SELECTIVE HYDROGENATION OF STYRENE
Autor/es:
BADANO, J.; LEDERHOS, C.; QUIROGA , M.; L'ARGENTIERE, P.; COLOMA-PASCUAL, F.
Revista:
QUÃMICA NOVA
Editorial:
Sociedad Brasileña de Química
Referencias:
Lugar: Brasil; Año: 2009 vol. 33 p. 48 - 51
ISSN:
0100-4042
Resumen:
A series of Group VIII metal catalysts was obtained
for the semi-hydrogenation of styrene. Catalysts were characterized by Hydrogen
Chemisorption, TPR and XPS. Palladium, rhodium and platinum low metal loading
prepared catalysts presented high activity and selectivity (ca. 98%) during the
semi-hydrogenation of styrene, being palladium the most active catalyst. The
ruthenium catalyst also presented high selectivity (ca. 98%), but the lowest
activity. For the palladium catalyst, the influence of the precursor salt and
of the reduction temperature on the activity and selectivity were studied. The
following activity series was obtained: PdN-423 > PdCl-673 > PdCl-373>
PtCl-673 > RhCl-673 >> RuCl-673. As determined by XPS, differences in
activity could be attributed, at least in part, to electronic effects.