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Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
Published on: April 12, 2019
Large amplitude excitations traveling along the interface in bistable catalytic methanol oxidation on Rh(110)
1Institut für Physikalische Chemie und Elektrochemie, Leibniz Universität Hannover, Callinstrasse 3a, D-30167 Hannover, Germany. imbihl@pci.uni-hannover.de.
Abstract:
Traveling interface modulations have been observed in catalytic methanol oxidation on an unpromoted Rh(110) and a partially vanadium oxide covered (θV = 0.1 MLE) Rh(110) surface. The front instabilities have been followed with photoemission electron microscopy (PEEM) in the 10-4 mbar range at T ≈ 800 K where the reaction is bistable. Near the equistability point large amplitude excursions (up to 300 μm) from the average interface position occur which travel in a pulse-like manner along the interface.
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