INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Preparation and Characterization of Ru-Sn/Al2O3 catalysts for hydrogenation of
Autor/es:
V.MAZZIERI; M. R. SAD; C. VERA; R. GRAU; C. PIECK
Revista:
QUÃMICA NOVA
Referencias:
Año: 2009
ISSN:
0100-4042
Resumen:
Ru-Sn/Al2O3 catalysts with different Sn loadings were prepared by the coimpregnation
method. Several characterization techniques such as TPR, pyridine TPD and catalytic
tests for dehydrogenation and hydrogenolysis were used to evaluate and compare such
catalysts. TPR results indicate that Sn is deposited both onto the support and as species
strongly interacting with Ru. Such non selective deposition modifies the acid and
metallic functions of the catalysts. Both total acidity and acid strength distribution are
affected: total acidity decreases and new sites of lower acid strength are created. Both
dehydrogenating and hydrogenolytic activities are strongly diminished by the addition
of Sn. Results of catalytic tests for methyl oleate hydrogenation indicate that methyl
stearate is the main product, with only minute amounts of oleyl alcohol produced, and
that the addition of Sn diminishes the hydrogenation activity.2O3 catalysts with different Sn loadings were prepared by the coimpregnation
method. Several characterization techniques such as TPR, pyridine TPD and catalytic
tests for dehydrogenation and hydrogenolysis were used to evaluate and compare such
catalysts. TPR results indicate that Sn is deposited both onto the support and as species
strongly interacting with Ru. Such non selective deposition modifies the acid and
metallic functions of the catalysts. Both total acidity and acid strength distribution are
affected: total acidity decreases and new sites of lower acid strength are created. Both
dehydrogenating and hydrogenolytic activities are strongly diminished by the addition
of Sn. Results of catalytic tests for methyl oleate hydrogenation indicate that methyl
stearate is the main product, with only minute amounts of oleyl alcohol produced, and
that the addition of Sn diminishes the hydrogenation activity.