Heidelberg 2015 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 6: Posters
MS 6.4: Poster
Dienstag, 24. März 2015, 17:00–19:00, C/Foyer
An experimental setup for spectroscopic and reactivity studies of metal clusters with adsorbates in the gas phase — •Martin Tschurl1, Kathrin Lange1, Daniel Neuwirth1, Jan Eckhard1, Bradley Visser2, and Ueli Heiz1 — 1Lehrstuhl für Physikalische Chemie & Catalysis Research Center, Chemistry Department, Technische Universität München, Lichtenbergstraße 4, 85748 Garching bei München, Germany — 2Paul-Scherrer Institute, 5232 Villigen PSI, Switzerland
The elucidation of the properties of small metal clusters is inspired by their potential applicability in chemistry as powerful heterogeneous catalysts. Studies in the gas phase enable very well-defined experimental condition, which allow for the easy modelling of the systems. The combination of reactivity studies and spectroscopy is particularly powerful for obtaining a complete picture of the system. While the latter enables the elucidation of the cluster geometries and their electronic state, the first allows for a determination of all reaction pathways as well as kinetic and thermodynamic properties of the reaction. In this work we present our apparatus, which enable the investigation of bare metal clusters and their adsorbate complexes by laser spectroscopic methods. In a second part of the apparatus these species are stored in a ring-electrode ion trap for the study of reaction kinetics under isothermal conditions. The abilities of our setup is demonstrated by the reactivity of small Ta-cluster cations.