Pd-promoted WOx/ZrO2 catalysts: characterization and catalytic activity for n-butane isomerization (Articolo in rivista)

Type
Label
  • Pd-promoted WOx/ZrO2 catalysts: characterization and catalytic activity for n-butane isomerization (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.apcata.2008.08.025 (literal)
Alternative label
  • M. Occhiuzzi (a); D. Cordischi (a); S. De Rossi (b); G. Ferraris (b); D. Gazzoli (a); M. Valigi (a) (2008)
    Pd-promoted WOx/ZrO2 catalysts: characterization and catalytic activity for n-butane isomerization
    in Applied catalysis. A, General (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M. Occhiuzzi (a); D. Cordischi (a); S. De Rossi (b); G. Ferraris (b); D. Gazzoli (a); M. Valigi (a) (literal)
Pagina inizio
  • 29 (literal)
Pagina fine
  • 35 (literal)
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  • 351 (literal)
Rivista
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  • fasc. (1). Elsevier. (literal)
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  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (a) Dipartimento di Chimica, Università di Roma \"La Sapienza\", P.le A. Moro 5, 00185 Roma, Italy (b) Istituto dei Sistemi Complessi (ISC) CNR, P.le A. Moro 5, 00185 Roma, Italy (literal)
Titolo
  • Pd-promoted WOx/ZrO2 catalysts: characterization and catalytic activity for n-butane isomerization (literal)
Abstract
  • The need for environmental friendly catalysts for alkane isomerization has prompted research on the WOx/ZrO2 system. Suitable promoters may improve its activity and stability. We investigated the effect of palladium on WOx/ZrO2 redox properties and catalytic activity for n-butane isomerization. Pd favoured the reduction of WxOy clusters already at RT (redox cycles O2/H2) and in reduced samples EPR identified W5+ surface species. Increasing Pd dispersion increased the catalytic activity. Leached and pre-reduced catalysts resulted to have the highest activity, suggesting that the most active species are WxOy clusters anchored to zirconia surface and interacting with near Pd hydride. For n-butane isomerization Pd-promotion is as effective as Pt-promotion. (literal)
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