INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
A study about the effect of the temperature of hydrogen treatment on the properties of Ru/Al2O3 and Ru/C and their catalytic behaviour during 1-heptyne semi-hydrogenation
Autor/es:
C.R. LEDERHOS; L'ARGENTIERE, PABLO CÉSAR; F. COLOMA-PASCUAL; N.S. FÍGOLI
Revista:
CATALYSIS LETTERS
Editorial:
Academic Plenum Publishers
Referencias:
Año: 2006 vol. 110 p. 23 - 28
ISSN:
1011-372X
Resumen:
The 1-heptyne selective hydrogenation carried out at 150 kPa, and at 283 and 303 K using Ru/Al2O3 and Ru/C as catalysts, was studied. Catalysts were prepared by the incipient wetness impregnation technique using RuCl3 as precursor. Ru/Al2O3 was treated in hydrogen at 373 or 573 K and Ru/C only at the last temperature. Catalysts were characterized by hydrogen chemisorption, TPR and XPS. Ru dispersion after treatment in hydrogen at the highest temperature is similar for both catalysts. Ru is present as Ru° in Ru/C, while Ru° and Ru electron-deficient species are present on the catalysts surface after hydrogen treatment at the two temperatures using Al2O3 as support.
The best catalytic behaviour was observed for the highest temperature of hydrogen treatment and for 303 K reaction temperature. As a consequence of a shape selectivity effect of the C support, the best conversion is obtained with the alumina supported catalyst.
