Effect of the presence of chlorine in bimetallic PtZn/CeO2 catalysts for the vapor-phase hydrogenation of crotonaldehyde
Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/10045/2661
Título: | Effect of the presence of chlorine in bimetallic PtZn/CeO2 catalysts for the vapor-phase hydrogenation of crotonaldehyde |
---|---|
Autor/es: | Silvestre-Albero, Joaquín | Coloma, Fernando | Sepúlveda-Escribano, Antonio | Rodríguez Reinoso, Francisco |
Grupo/s de investigación o GITE: | Laboratorio de Materiales Avanzados |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica |
Palabras clave: | PtZn/CeO2 | Selective hydrogenation | XPS | Chlorine effect |
Área/s de conocimiento: | Química Inorgánica |
Fecha de creación: | 2005 |
Fecha de publicación: | 10-may-2006 |
Editor: | Elsevier |
Cita bibliográfica: | SILVESTRE ALBERO, Joaquín, et al. "Effect of the presence of chlorine in bimetallic PtZn/CeO2 catalysts for the vapor-phase hydrogenation of crotonaldehyde". Applied Catalysis A: General. Vol. 304 (10 May 2006). ISSN 0926-860X, pp. 159-167 |
Resumen: | The effect of the reduction temperature has been studied on ceria-supported bimetallic platinum–zinc catalysts prepared from H2PtCl6 and Pt(NH3)4(NO3)2 as the platinum precursors and Zn(NO3)2 as the zinc precursor. The catalysts have been characterized by X-ray diffraction (XRD), temperature-programmed reduction (TPR), and X-ray photoelectron spectroscopy (XPS), and their catalytic behavior has been evaluated in the vapor-phase hydrogenation of toluene and of crotonaldehyde (2-butenal) after reduction at low (473 K) and high (773 K) temperatures. The increase in the reduction temperature produces a strong decrease in the catalytic activity for toluene hydrogenation in both systems, but an important increase of activity for crotonaldehyde hydrogenation, which is more evident for the chlorine-free catalyst. The selectivity towards the hydrogenation of the carbonyl bond to yield the unsaturated alcohol (crotyl alcohol, 2-buten-1-ol) also increases after reduction at high temperature, being somewhat higher for the Cl-containing catalyst. The results are discussed in terms of differences in surface composition of the catalysts. |
Patrocinador/es: | C.I.C.Y.T. (Project BQU 2000-0467). |
URI: | http://hdl.handle.net/10045/2661 |
ISSN: | 0926-860X |
DOI: | 10.1016/j.apcata.2006.02.039 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.apcata.2006.02.039 |
Aparece en las colecciones: | INV - LMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
---|---|---|---|---|
ApplCatalA304-159-06.pdf | Versión final (acceso restringido) | 360,72 kB | Adobe PDF | Abrir Solicitar una copia |
PtZnCe.pdf | Borrador revisado (acceso libre) | 236,26 kB | Adobe PDF | Abrir Vista previa |
Todos los documentos en RUA están protegidos por derechos de autor. Algunos derechos reservados.