Model Catalysts: The Local Properties of Specific Surface Sites

  • K. Wandelt
Part of the Springer Proceedings in Physics book series (SPPHY, volume 73)


Real catalyst surfaces are very complex and heterogeneous with a broad distribution of structurally and chemically different sites. In the process of heterogeneous catalysis some of these sites may behave as particularly “active sites” in the sense that their presence is responsible for a high yield and/or a high selectivity of a desired reaction product. In order to optimize the activity of such catalyst two aspects are important, namély the knowledge of the specific physical properties which distinguish these “active sites” from those of the remaining surface, and the know-how to prepare surfaces with a high and stable density of such sites. The first point is more analytical in nature, while the second aspect is mainly an engineering problem. This paper aims at making a contribution to the characterization of the local physical properties of distinct surface sites.


Step Edge Alkali Metal Atom Electron Binding Energy Step Site Valence Band Spectrum 
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  1. [1]
    G.P. Alldredge and L. Kleinman, Phys. Rev. B10, 559 (1974)Google Scholar
  2. [2]
    S.G. Louie, K.-M. Ho, J.R. Chelikowsky and M.L. Cohen, Phys. Rev. B15, 5627 (1977)Google Scholar
  3. [3]
    J.G. Gay, J.R. Smith and F.J. Arlinghaus, Phys. Rev. Lett. 10, 561 (1977)CrossRefGoogle Scholar
  4. [4]
    J. Wintterlin, J. Wiechers, H. Brune, T. Gritsch, H. Höfer and R.J. Behm, Phys. Rev. Lett. 62, 59 (1989)CrossRefGoogle Scholar
  5. [5]
    Ch. Wöll S. Chiang R.J. Wilson and P.H. Lippel Phys. Rev. B39 7988 1989Google Scholar
  6. [6]
    F. Besenbacher, I. Stensgaard, L. Ruan, J.K. Nørskov and K.W. Jacobsen, Surf. Sci. 272, 334 (1992)CrossRefGoogle Scholar
  7. [7]
    G.R. Castro U. Schneider H. Busse T. Janssens and K. Wandelt Surf. Sci. 269/270 321 1992Google Scholar
  8. [8]
    J. Banhart, P. Weinberger and J. Voitländer, Phys. Rev. B40, 12079 (1989)Google Scholar
  9. [9]
    C.R. Brundle and K. Wandelt, Proc. 7th IVG/3 ICSS-Conference (Vienna, 1977) p. 2091Google Scholar
  10. [10]
    H. Steininger, S. Lehwald and H. Ibach, Surf. Sci. 123, 264 (1982)CrossRefGoogle Scholar
  11. [11]
    R. Schlögl, in: Physics and Chemistry of Alkali Metal Adsorption, Eds. H.P. Bonzel, A.M. Bradshaw, G. Ertl (Elsevier, Amsterdam, 1989) p. 347Google Scholar
  12. [12]
    M.P. Kiskinova, Surf. Sci. Rep. 8[8], 359 (1988)CrossRefGoogle Scholar
  13. [13]
    H.P. Bonzel, Surf. Sci. Rep. 8[2], 43 (1987)Google Scholar
  14. [14]
    K. Wandelt, in: Physics and Chemistry of Alkali Metal Adsorption, Eds. H.P. Bonzel, A.M. Bradshaw, G. Ertl (Elsevier, Amsterdam, 1989) p. 25Google Scholar
  15. [15]
    K. Wandelt, in: Thin Metal Films and Gas Chemisorption, Ed. P. Wissmann (Elsevier, Amsterdam, 1987) p. 280CrossRefGoogle Scholar
  16. [16]
    K. Wandelt, in: Chemistry and Physics of Solid Surfaces VIII, Springer Series of Surface Science, Eds. R. Vanselow and R. Howe (Springer, Berlin, Heidelberg, 1990) p. 289Google Scholar
  17. [17]
    K. Markert and K. Wandelt, Surf. Sci. 159, 24 (1985); see also K. Markert, Diplom-Thesis (Universität München, 1985)CrossRefGoogle Scholar
  18. [18]
    J.K. Nørskov, S. Holloway and N.D. Lang, Surf. Sci. 137, 65 (1984) and 150, 24 (1985)CrossRefGoogle Scholar
  19. [19]
    T.V.W. Janssens, K. Wandelt and J.W. Niemantsverdriet, Chem. Letters, submittedGoogle Scholar
  20. [20]
    B. Gumhalter, K. Hermann and K. Wandelt, Vacuum, 41, 192 (1990)CrossRefGoogle Scholar
  21. [21]
    K. Hermann B. Gumhalter and K. Wandelt Surf. Sci. 251/2521128 1991Google Scholar
  22. [22]
    H. Wagner, in: Springer Tracts in Modern Physics, Vol. 85 (Springer, Berlin, Heidelberg, 1979)Google Scholar
  23. [23]
    R.J. Behm, W. Hösier, E. Ritter and G. Binnig, Phys. Rev. Lett. 56, 228 (1986)CrossRefGoogle Scholar
  24. [24]
    Fig. 11 was generated using the SARCH/LATUSE software package by M. van Hove and K. Hermann. The stepped Ru(0001) shown actually corresponds to a (1 5 126) plane of hcp rutheniumGoogle Scholar
  25. [25]
    R. Miranda, S. Daiser, K. Wandelt and G. Ertl, Surf. Sci. 131, 61 (1983)CrossRefGoogle Scholar
  26. [26]
    D. Eigler and E.K. Schweizer, presented at the German Physical Society Meeting, Regensburg, March 1990, and at the 5th Int. Conf. on STM/STS, Baltimore, July 1990Google Scholar
  27. [27]
    K. Wandelt, J. Hulse and J. Küppers, Surf. Sci. 104, 212 (1981)CrossRefGoogle Scholar
  28. [28]
    R. Smoluchowski, Phys. Rev. 60, 661 (1941)CrossRefGoogle Scholar
  29. [29]
    W. Erley, H. Ibach, S. Lehwald and H. Wagner, Surf. Sci. 83, 585 (1979)CrossRefGoogle Scholar
  30. [30]
    M.R. McClellan, F.R. McFeely and J.L. Gland, Surf. Sci. 123, 188 (1983)CrossRefGoogle Scholar
  31. [31]
    A.S. Mårtensson, C. Nyberg and S. Andersson, Phys. Rev. Lett. 57, 2045 (1986)CrossRefGoogle Scholar
  32. [32]
    S. Daiser and K. Wandelt, Surf. Sci. 128, L213 (1983)CrossRefGoogle Scholar
  33. [33]
    RA. de Paola, J. Hrbek and F.M. Hoffmann, J. Chem. Phys. 82, 2484 (1985)Google Scholar
  34. [34]
    B. Gumhalter K. Wandelt and Ph. Avouris Phys. Rev. B27 8048 1988Google Scholar
  35. [35]
    see also B. Gumhalter and K. Wandelt, Surf. Sci. 140, 355 (1984)CrossRefGoogle Scholar
  36. [36]
    K. Hermann, private communicationGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • K. Wandelt
    • 1
  1. 1.Institute of Physical and Theoretical ChemistryUniversity of BonnBonn 1Germany

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