Chemical Reactions on Metal Oxide Surfaces Investigated by Vibrational Spectroscopy
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Autor:
Wang, Y. / Wöll, C. (2009)
- Quelle: Surf. Sci. (2009), 603, 1589-1599
- Datum: 2009
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Wang, Y. / Wöll, C. (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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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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