INVESTIGADORES
DE MIGUEL Sergio Ruben
artículos
Título:
Effect of the addition of alkali metals on the metallic phase of Pt/A1203 catalysts
Autor/es:
SERGIO R. DE MIGUEL; ALBERTO A. CASTRO; OSVALDO A. SCELZA; JAVIER SORIA
Revista:
CATALYSIS LETTERS
Editorial:
J.C. Baltzer
Referencias:
Año: 1995 vol. 32 p. 281 - 291
ISSN:
1011-372X
Resumen:
The effect of the addition of alkali metals to Pt/AlaO3 catalysts for dehydrogenation of paraffins
was studied. Results can be interpreted in terms of different effects. Thus, the addition
of alkali metals produces a poisoning of the acid sites of the alumina support and a modification
of the characteristics of the metallic phase. The latter effect involves not only an increase of
the Pt particles size, but also an electronic modification of the metallic phase. These two effects
are more marked with alkali metals with higher ionic radius, such as K.
