Calendar of Physics Talks Vienna

The effective field theory approach to the two-body problem in Einstein's gravity
Speaker:Barak Kol (Hebrew U.)
Date: Mon, 25.08.2014
Time: 14:00
Duration: 60 min
Location:SEM 138C (Freihaus, Wiedner Hauptstrasse 8-10), 9th Floor, Vienna University of Technology
Contact:Daniel Grumiller

The stability of supported Cu nanoparticles studied using 3D model methanol synthesis catalysts
Speaker:Petra de Jongh (Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University/The Netherlands)
Abstract:Catalysts typically consist of metal nanoparticles (<10 nm) as an active phase, supported on a porous material that provides stability to the system, but has 3D open porosity to allow diffusion of reactants and products. Metal nanoparticles have an inherent tendency to grow into larger crystallites, especially at increased temperatures and in reactive gas atmospheres, leading to a decrease in the specific metal surface area and hence activity. Recent advances using for instance in in situ electron microscopy, STM under low gas pressures and computational approaches yield information on the mechanisms and fundamentals of particle growth in model systems. However, relatively little is still known about the mechanisms of particle growth under real reaction conditions in 3D supported systems. We study the growth of supported nanoparticles using 3D ordered mesoporous supports as a key tool. T
Date: Tue, 26.08.2014
Time: 16:00
Location:Technische Universität Wien, Institut für Angewandte Physik, Seminarraum 134A, Turm B (gelbe Leitfarbe), 5. OG, 1040 Wien, Wiedner Hauptstraße 8-10
Contact:Univ.Prof. Dr. Ulrike Diebold