Au/CeO2-SBA-15 catalysts for CO oxidation: effect of ceria loading on physic-chemical properties and catalytic performances (Articolo in rivista)

Type

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

Label

• Au/CeO2-SBA-15 catalysts for CO oxidation: effect of ceria loading on physic-chemical properties and catalytic performances (Articolo in rivista) (literal)

Anno

• 2012-01-01T00:00:00+01:00 (literal)

Alternative label

• L.F. Liotta, G. Pantaleo, F. Puleo, A.M. Venezia (2012)
  Au/CeO2-SBA-15 catalysts for CO oxidation: effect of ceria loading on physic-chemical properties and catalytic performances
  in Catalysis Today
  (literal)

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• L.F. Liotta, G. Pantaleo, F. Puleo, A.M. Venezia (literal)

Pagina inizio

• 10 (literal)

Pagina fine

• 19 (literal)

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• 187 (literal)

Rivista

• Catalysis Today (Rivista)

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• Istituto per Lo Studio Dei Materiali Nanostrutturati (ISMN), CNR, via Ugo La Malfa, 153, 90146 Palermo, Italy Dipartimento di Chimica, Università di Palermo, Parco d'Orleans II, Viale delle Scienze pad.17, Palermo 90128, Italy (literal)

Titolo

• Au/CeO2-SBA-15 catalysts for CO oxidation: effect of ceria loading on physic-chemical properties and catalytic performances (literal)

Abstract

• In this work gold catalysts supported over SBA-15 with different CeO 2 loadings (5-30 wt%) were prepared, characterized by N 2 physisorption analyses, SAXS, XRD, STEM and XPS techniques and their catalytic performances were evaluated in the CO oxidation, chosen as reaction test. Over a selected catalyst, Au/CeO 2(20 wt%)-SBA-15, the effect of CO 2 and of the mixture (CO 2 + H 2O) on the CO conversion to CO 2 was also evaluated. Characterizations by SAXS, XRD, STEM and XPS were carried out on selected spent catalysts after CO oxidation. The results were discussed in terms of relationship between morphological, structural, electronic and catalytic properties as a function of the ceria loading. The CO oxidation activity was strongly affected by gold particle size and gold/ceria interface as well. For gold catalysts supported on ceria-doped SBA-15, the oxygen vacancies in ceria likely act as nucleation sites for gold anchoring and stabilization against sintering. The optimum of the catalytic performances was found for 20 wt% ceria loading, likely due to the optimum synergistic interaction between highly dispersed defective ceria oxide and nanosized gold. © 2012 Elsevier B.V. All rights reserved. (literal)

Prodotto di

• Istituto per lo studio dei materiali nanostrutturati (ISMN) (Istituto)
• Catalizzatori per l'abbattimento di inquinanti atmosferici (PM.P03.003.001) (Modulo)

Autore CNR

• ANNA VENEZIA (Unità di personale interno)
• GIUSEPPE PANTALEO (Persona)
• LEONARDA FRANCESCA LIOTTA (Unità di personale interno)

Incoming links:

Prodotto

• Istituto per lo studio dei materiali nanostrutturati (ISMN) (Istituto)
• Catalizzatori per l'abbattimento di inquinanti atmosferici (PM.P03.003.001) (Modulo)

Autore CNR di

• LEONARDA FRANCESCA LIOTTA (Unità di personale interno)
• GIUSEPPE PANTALEO (Persona)
• ANNA VENEZIA (Unità di personale interno)

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

• Catalysis Today (Rivista)