Chemisorption bond energies of Lewis acids and bases on oxygen modified Mo(100) surfaces

J. E. Deffeyes*, A. Horlacher Smith, P. C. Stair

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


The acid-base properties of three molybdenum (100) surfaces chemically modified by 1.5, 1.2, and 1.0 monolayers (ML) of atomic oxygen were investigated by thermal desorption spectroscopy using a series of molecular Lewis bases. The molecules used in this study were of three types, hard Lewis bases, ammonia and dimethylether, soft Lewis bases, phosphine, ethene and propene, and two π acids, carbon monoxide and 3,3,3-trifluoropropene. The trends in desorption energies are consistent with the expectation that the molecules would adsorb at localized, acidic surface sites. The desorption energies are correlated with proton affinities, and the 1.5 ML oxygen modified surface was found to most resemble a gas phase proton.

Original languageEnglish (US)
Pages (from-to)79-98
Number of pages20
JournalSurface Science
Issue number1
StatePublished - Nov 1 1985

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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