Morphological and textural characterization of vanadium oxide supported on zirconia by ionic exchange (Articolo in rivista)

Type

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

Label

• Morphological and textural characterization of vanadium oxide supported on zirconia by ionic exchange (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.apsusc.2008.06.139 (literal)

Alternative label

• Gazzoli D. (a), De Rossi S. (b), Ferraris G.(b), Valigi M. (a), Ferrari L. (c), Selci S. (c) (2008)
  Morphological and textural characterization of vanadium oxide supported on zirconia by ionic exchange
  in Applied surface science
  (literal)

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

• Gazzoli D. (a), De Rossi S. (b), Ferraris G.(b), Valigi M. (a), Ferrari L. (c), Selci S. (c) (literal)

Pagina inizio

• 2012 (literal)

Pagina fine

• 2019 (literal)

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• 255 (literal)

Rivista

• Applied surface science (Rivista)

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• fasc. (5, part 1). Elsevier. (literal)

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• 5 (literal)

Note

• Scopu (literal)
• ISI Web of Science (WOS) (literal)

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

• a) Dipartimento di Chimica, Università di Roma ‘La Sapienza’ b) Istituto dei Sistemi Complessi del CNR, c/o Dipartimento di Chimica, Università di Roma ‘La Sapienza’ c) Istituto dei Sistemi Complessi del CNR, Area Tor Vergata (literal)

Titolo

• Morphological and textural characterization of vanadium oxide supported on zirconia by ionic exchange (literal)

Abstract

• Zirconia-supported vanadium oxide samples containing vanadium up to 6.8 wt.% were prepared by ionic exchange using aqueous solution of peroxovanadate complexes and hydrous zirconium oxide. The samples, heated at 823 K for 5 h in air, were studied by several techniques, including X-ray diffraction, surface area determinations, diffuse reflectance spectroscopy (UV–vis), Raman spectroscopy, pore size distribution measurements and atomic force microscopy. The results showed that the preparation procedure applied leads to good vanadium dispersion. The interaction between the anchored surface species and the support affects some ZrO2 properties, including texture and phase transition. Depending on the vanadium loading, several species formed. In the most diluted sample small polyvanadate entities predominate, whereas at increasing vanadium loading (up to about 6 V atoms nm-2) more condensed species formed yielding granular-type surface aggregates. At higher loading, granular-type particles and large flat structures, due to amorphous two- or three-dimensional polyvanadate species and ZrV2O7-like structures developed. Treatments with an ammonia solution specified that only a fraction of the vanadium species (in a polymeric form) interacts with the zirconia surface. Atomic force microscopy directly imaged the formation of vanadium aggregates (superimposed to the interacting species) at increasing vanadium content and their removal by the ammonia leaching. (literal)

Prodotto di

• Realizzazione e studio di sistemi complessi Organico/Inorganico (MD.P02.007.001) (Modulo)

Autore CNR

• SERGIO DE ROSSI (Persona)
• GIOVANNI FERRARIS (Unità di personale interno)
• LUISA FERRARI (Persona)
• STEFANO SELCI (Unità di personale interno)

Incoming links:

Autore CNR di

• LUISA FERRARI (Persona)
• STEFANO SELCI (Unità di personale interno)
• SERGIO DE ROSSI (Persona)
• GIOVANNI FERRARIS (Unità di personale interno)

Prodotto

• Realizzazione e studio di sistemi complessi Organico/Inorganico (MD.P02.007.001) (Modulo)

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

• Applied surface science (Rivista)