INVESTIGADORES
DE MIGUEL Sergio Ruben
artículos
Título:
Characterization of Bimetallic PtSn Catalysts Supported on Purified and H2O2-Functionalized Carbons Used for Hydrogenation Reactions
Autor/es:
S. R. DE MIGUEL; M.C ROMÁN-MARTÍNEZ; E. JABLONSKI; J. L. G. FIERRO; D. CAZORLA-AMORÓS,; O. A. SCELZA
Revista:
JOURNAL OF CATALYSIS
Editorial:
Academic Press
Referencias:
Año: 1999 vol. 184 p. 514 - 525
ISSN:
0021-9517
Resumen:
The state of the metallic phase of PtSn/C catalysts prepared by
coimpregnation and successive impregnation on purified andH2O2-
functionalized carbons as supports was studied by TPD, TPR, H2
functionalized carbons as supports was studied by TPD, TPR, H2
2O2-
functionalized carbons as supports was studied by TPD, TPR, H22
chemisorption, XPS, and test reactions. Furthermore, the characteristics
of the metallic structures were related with the catalytic
behaviors in the selective hydrogenation reaction of carvone in liquid
phase. In PtSn/C samples, most of the Sn would be in intimate
contact with Pt, and the surface of the reduced bimetallic
catalysts would be composed of metallic platinum, Sn(II), and/or
Sn(IV) species, and small amounts of zerovalent tin, probably forming
alloys with Pt0. The high selectivity of these bimetallic PtSn/C
catalysts for the production of unsaturated alcohols in the reaction
of carvone hydrogenation would be due to the action not only of the
promoter (Sn) but also of the support (carbon).
catalysts for the production of unsaturated alcohols in the reaction
of carvone hydrogenation would be due to the action not only of the
promoter (Sn) but also of the support (carbon).
0. The high selectivity of these bimetallic PtSn/C
catalysts for the production of unsaturated alcohols in the reaction
of carvone hydrogenation would be due to the action not only of the
promoter (Sn) but also of the support (carbon).