Effect of titania surface species on the chemisorption of CO and H2 on polycrystalline nickel

G. B. Raupp, J. A. Dumesic

Research output: Contribution to journalArticle

67 Scopus citations

Abstract

A submonolayer amount of titanium was deposited and subsequently oxidized in situ on a clean polycrystalline nickel foil in ultrahigh vacuum. Temperature-programmed desorption revealed the activation energy for CO desorption was reduced significantly by the presence of titania surface species. The titania-containing Ni surface showed three binding states for dissociative hydrogen adsorption. Adsorption into the strongest of these three states was an activated process. These results suggest the apparent suppression of CO and H2 adsorption typically observed at 300 K for titania-supported group 8 metals may be due to the existence of titania species on the surfaces of the metal particles.

Original languageEnglish (US)
Pages (from-to)660-663
Number of pages4
JournalJournal of physical chemistry
Volume88
Issue number4
DOIs
StatePublished - 1984
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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