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Regensburg 2022 – scientific programme

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O: Fachverband Oberflächenphysik

O 70: Supported nanoclusters: Structure, Reactions, Catalysis

O 70.1: Topical Talk

Thursday, September 8, 2022, 15:00–15:30, H6

Stability and dynamics of cluster catalysts and their supportsSebastian Kaiser, Johanna Plansky, Fabian Knoller, Alexander Bourgund, Ke Zhang, Ueli Heiz, Friedrich Esch, and •Barbara A. J. Lechner — Department of Chemistry & Catalysis Research Center, Technical University of Munich, Germany

The intrinsic metastability of supported clusters can induce a vast range of dynamics that strongly influence their physical and chemical properties, while being experimentally highly challenging to investigate. Here, I will present a range of surface dynamics that occur in supported cluster dynamics, ranging from confined cluster diffusion, cluster encapsulation, support mobility and reactant spillover to lateral diffusion linked to reactivity. Our experimental approach is to combine static, statistically sound, and dynamic, time-resolved scanning tunneling microscopy (STM) to investigate the diffusion, sintering, and restructuring of size-selected clusters on weakly and strongly interacting supports.

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