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Topics in Catalysis

, Volume 46, Issue 1–2, pp 161–167 | Cite as

Chemisorption of hydrogen on the missing-row Pt(110)-(1 × 2) surface

  • M. Minca
  • S. Penner
  • T. Loerting
  • A. MenzelEmail author
  • E. Bertel
  • R. Zucca
  • J. Redinger
Article

Chemisorption of hydrogen on the missing-row reconstructed Pt(110)-(1 × 2) surface has been studied by TPD, quantitative LEED, and DFT calculations. An (atypical) chemisorption site on the outermost close-packed rows with an ideal coverage of 0.5 ML (β2-state) is found. Adsorption sites on the (111) microfacets are occupied only at higher coverage (β1-state). After exposures of more than 400 L, the TPD spectra clearly reveal the controversly discussed α-state. In the same coverage range, an intense 1 × 4 superstructure becomes visible at LEED energies around 50 eV. The saturation coverage for chemisorption at T = 120 K is 33% higher than assumed previously.

Keywords

hydrogen chemisorption transition metal surfaces surface reconstruction surface relaxation desorption 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • M. Minca
    • 1
  • S. Penner
    • 1
  • T. Loerting
    • 1
  • A. Menzel
    • 1
    Email author
  • E. Bertel
    • 1
  • R. Zucca
    • 2
  • J. Redinger
    • 2
  1. 1.Institute of Physical ChemistryUniversity of InnsbruckInnsbruckAustria
  2. 2.Center for Computational Materials ScienceVienna University of TechnologyViennaAustria

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