Monometallic and bimetallic model catalysts on either refractory metal singlecrystals
as planar surfaces or oxide supports as nano-size clusters have been
systematically studied using X-ray photoemission spectroscopy (XPS), low energy ion
scattering spectroscopy (LEIS), low energy electron diffraction (LEED), infrared
reflection absorption spectroscopy (IRAS), and temperature programmed desorption
(TPD) under ultra-high vacuum (UHV) conditions. Of particular interest in this
investigation is the characterization of the surface composition, morphology, and
electronic/geometric structure of the following catalysts: Au/TiOx, Au-Pd/Mo(110), Au-
Pd/SiO2, Cu-Pd/Mo(110), and Sn/Pd(100). Structure-reactivity correlations during
surface-alloy formation and adsorption-desorption processes were explained in terms of
ensemble and ligand effects. Prospects of translating the accumulated atomic-level
information into more efficient 'real world' catalysts were discussed.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-1709 |
| Date | 02 June 2009 |
| Creators | Luo, Kai |
| Contributors | Goodman, D. W. |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Dissertation, text |
| Format | electronic, application/pdf, born digital |
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