Local chemical properties of nanostructured Au-Pd bimetal model catalysts
Dissertation
Faculties
Fakultät für NaturwissenschaftenAbstract
The local chemical properties of specific sites on bimetallic Au-Pd(111) surfaces are investigated in a combined STM, HREELS, and TPD study. Growth and alloying processes are analysed on the atomic scale using STM. From atomically resolved STM images precise information on the structure and composition of bimetallic Au-Pd(111) surfaces is obtained. The adsorption behaviour of carbon monoxide and ethylene on these well-defined bimetallic surfaces is analysed using HREELS and TPD. The combination of STM, HREELS, and TPD in one UHV chamber allows to determine the chemical properties of sites like Au island edge atoms, Pd atoms in a Au matrix (Pd monomers), or Pd dimers in a Au matrix.
Date created
2000
Subject Headings
Adsorption [GND]Binäre Legierung [GND]
Elektronen-Energieverlustspektroskopie [GND]
Ethylen [GND]
Gold [GND]
Heterogene Katalyse [GND]
Kohlenmonoxid [GND]
Kristallwachstum [GND]
Oberflächenchemie [GND]
Palladium [GND]
Rastertunnelmikroskopie [GND]
Thermische Desorptionsspektroskopie [GND]
Alloys [LCSH]
Carbon monoxide [LCSH]
Crystal growth [LCSH]
Electron energy loss spectroscopy [LCSH]
Epitaxy [LCSH]
Ethylene [LCSH]
Heterogeneous catalysis [LCSH]
High resolution spectroscopy [LCSH]
Scanning tunneling microscopy [LCSH]
Surface chemistry [LCSH]
Keywords
Oberflächenlegierung; Surface alloy; Temperature programmed desorptionMetadata
Show full item recordCitation example
Ruff, Martin (2000): Local chemical properties of nanostructured Au-Pd bimetal model catalysts. Open Access Repositorium der Universität Ulm. Dissertation. http://dx.doi.org/10.18725/OPARU-55