INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Poisoning and regeneration of Pt-Pd/WO3-ZrO2 short paraffin isomerization catalysts
Autor/es:
SERGIO CANAVESE; ZUNILDA FINELLI; MARIANA BUSTO; VIVIANA M. BENITEZ; CARLOS R. VERA; JUAN C. YORI
Revista:
QUÃMICA NOVA
Editorial:
SOC BRASILEIRA QUIMICA
Referencias:
Año: 2010 vol. 33 p. 508 - 513
ISSN:
0100-4042
Resumen:
WO3-ZrO2 catalysts promoted with Pt and Pd were tested as paraffin isomerization catalysts using n-hexane as model compound. Sulfur and amine poisoning and regeneration tests were used to assess the impact of the addition of Pt and Pd on the deactivation resistance and regenerability. Pt and PtPd catalysts were the most active for n-hexane isomerization. The low activity of the Pd catalyst was attributed to poor Pd metal properties when supported over WO3-ZrO2 and to a decrease of the number of Brõnsted acid sites. PtPd was the only catalyst capable of full regeneration after S poisoning. Amine poisoning completely supressed the isomerization activity and the original activity could only be restored by calcination and reduction.
