INVESTIGADORES
DE MIGUEL sergio Ruben
artículos
Título:
State of metallic phase in PtSn/Al2O3 catalysts prepared by different deposition techniques
Autor/es:
GRACIELA T. BARONETTI, SERGIO R. DE MIGUEL, OSVALDO A. SCELZA AND ALBERTO A. CASTRO
Revista:
APPLIED CATALYSIS A-GENERAL
Editorial:
Elsevier
Referencias:
Año: 1986 vol. 24 p. 109 - 116
ISSN:
0926-860X
Resumen:
The state of the metallic phase after thermal treatments in PtSn/Al2O3 catalysts, prepared by different deposition techniques (coimpregnation and successive impregnations), was investigated by temperature programmed reduction, X-ray photoelectron spectroscopy and cyclohexane dehydrogenation and cyclopentane hydrogenolysis reactions.
In all catalysts the presence of zerovalent Sn was detected due to a catalytic effect of platinum on tin reduction. Besides, there seems to exist a relationship between the amount of [Pt Cl2 (Sn Cl3)2]2- complex deposited on the alumina after the impregnation step, tin reducibility and PtSn alloy formation.
