Effect of gold on the HDS activity of supported palladium catalysts (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Effect of gold on the HDS activity of supported palladium catalysts (Articolo in rivista) (literal)

Anno

• 2002-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1006/jcat.2002.3778 (literal)

Alternative label

• Venezia A.M., La Parola V., Nicoll V., Deganello G. (2002)
  Effect of gold on the HDS activity of supported palladium catalysts
  in Journal of catalysis (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Venezia A.M., La Parola V., Nicoll V., Deganello G. (literal)

Pagina inizio

• 55 (literal)

Pagina fine

• 62 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 212 (literal)

Rivista

• Journal of catalysis (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• ISMN, CNR Università di Palermo (literal)

Titolo

• Effect of gold on the HDS activity of supported palladium catalysts (literal)

Abstract

• The effect of gold on palladium catalysts supported on amorphous aluminosilicate was investigated in the hydrodesulfurization of thiophene. A series of bimetallic AuxPdy catalysts was prepared by the slow deposition-precipitation method with decomposition of urea. The structural and surface properties of the samples were analyzed by X-ray diffraction and X-ray photoelectron spectroscopy techniques at different stages of the catalyst life. After calcination at 673 K, gold-enriched solid solutions of approximately Au90Pd10 and Au80Pd20 composition were formed for all samples of different Au/Pd ratios, along with free palladium phases. Au80Pd20 was the prevailing phase. Hydrogen treatment of the catalyst at 673 K before catalytic tests reduced free palladium oxide to free metallic Pd. An increase of the hydrodesulfurization activity with increasing gold amount up to 50 wt% was found. The structural analysis of the \"aged\" catalysts indicated formation of palladium sulfide, Pd4S, in the monometallic palladium and in the bimetallic palladium-rich samples but not in the gold-rich samples. The catalytic behavior of the catalysts was related to the formation of the AuxPdy clusters and to the inhibition of the sulfide-phase formation (literal)

Prodotto di

• Istituto per lo studio dei materiali nanostrutturati (ISMN) (Istituto)

Autore CNR

• VALERIA LA PAROLA (Unità di personale interno)
• ANNA VENEZIA (Persona)

Incoming links:

Prodotto

• Istituto per lo studio dei materiali nanostrutturati (ISMN) (Istituto)

Autore CNR di

• VALERIA LA PAROLA (Unità di personale interno)
• ANNA VENEZIA (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of catalysis (Rivista)