Institute of Functional Interfaces

Chemical Reactions on Metal Oxide Surfaces Investigated by Vibrational Spectroscopy

  • chair: Wang, Y. / Wöll, Ch. (2009)

  • place: Surf. Sci. (2009), 603, 1589-1599

  • Date: 2009
  • Wang, Y. / Wöll, Ch. (2009): „Chemical Reactions on Metal Oxide Surfaces Investigated by Vibrational Spectroscopy“. In: Surf. Sci. (2009), 603, 1589-1599

Abstract

The most successful method to unravel the microscopic mechanisms governing reactions in heterogeneous catalysis is the ‘‘surface science” approach which is based on well-controlled studies on model catalysts (usually single crystal surfaces) under ultrahigh vacuum (UHV) conditions [G. Ertl, Angew. Chem. 47 (2008) 3524]. In this review our recent vibrational spectroscopic studies on selected model reactions at various single-crystalline metal oxide surfaces are summarized.

Two vibrational spectroscopic methods, high resolution electron energy loss spectroscopy (HREELS) and Fourier-transform infrared spectroscopy (FTIRS), were applied to characterize the adsorbed species and to elucidate the elementary processes of chemical reactions at oxide surfaces ranging from well-defined single crystals to modified surfaces with deliberately introduced defects. The combination of both methods allows us to extend the vibrational spectroscopic studies from ideal to complex systems.


 

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