Analysis of the surface acid-base characteristics of Pt/C catalysts for phosphoric acid fuel cells (Articolo in rivista)

Type
Label
  • Analysis of the surface acid-base characteristics of Pt/C catalysts for phosphoric acid fuel cells (Articolo in rivista) (literal)
Anno
  • 1994-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/0926-860X(94)80178-9 (literal)
Alternative label
  • Torre T.; Arico A.S.; Alderucci V.; Antonucci V.; Giordano N. (1994)
    Analysis of the surface acid-base characteristics of Pt/C catalysts for phosphoric acid fuel cells
    in Applied catalysis. A, General (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Torre T.; Arico A.S.; Alderucci V.; Antonucci V.; Giordano N. (literal)
Pagina inizio
  • 257 (literal)
Pagina fine
  • 272 (literal)
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  • http://www.scopus.com/inward/record.url?eid=2-s2.0-0028463861&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 114 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • C.N.R. Institute for Transformation and Storage of Energy, Salita S. Lucia sopra Contesse 39, S. Lucia, 98126 Messina, Italy; tel. (+39-90)6241, fax. (+39-90)601011 (literal)
Titolo
  • Analysis of the surface acid-base characteristics of Pt/C catalysts for phosphoric acid fuel cells (literal)
Abstract
  • The influence of surface acid-base properties on the formation of a dispersed platinum phase on a carbon support was studied by various physico-chemical techniques, i.e., potentiometric titration (ZPC), FT-IR, TPD and XPS. The series of events occurring during thermal activation of Pt/C catalysts was investigated and the results were related to the electrochemical active surface area (MSA) determined by cyclic voltammetry in phosphoric acid. The results suggest that surface acidic oxygen-containing functional groups may act as anchoring centres for the metal particles limiting their growth in the low-temperature range. This effect produces a strong metal-support interaction which affects the electronic nature of platinum sites. In the high-temperature range, basic functional groups are mainly individuated, i.e., C?- and pyrone-type sites. Pyrone groups behave similarly to the acidic groups whereas C? groups possess an electron-releasing behaviour producing a lower level of metal-support interaction. © 1994. (literal)
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