Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 52: Poster Wednesday: Adsorption and Catalysis 2
O 52.4: Poster
Mittwoch, 7. September 2022, 18:00–20:00, P4
Temperature-induced surface reactions of 1-cyclohexylethanol and acetophenone on Pt(111) — •Valentin Schwaab, Felix Hemauer, Eva Marie Freiberger, Natalie Waleska, Hans-Peter Steinrück, and Christian Papp — Friedrich-Alexander-Universität, Erlangen, Germany
1-Cyclohexylethanol (1-CHE) is an interesting candidate when it comes to molecular energy storage systems. Such secondary alcohols can function as electrofuel, whereby their oxidation over a platinum electrode yields the respective ketone together with two electrons and two protons. Additionally, 1-CHE and acetophenone (APH) represent an attractive liquid organic hydrogen carrier (LOHC) pair, as the complete dehydrogenation of the former leads to the release of four equivalents of H2.
To gain fundamental insights into the surface reaction of both molecules, high-resolution temperature-programmed X-ray photoelectron spectroscopy experiments (HR-TPXPS) were carried out on a Pt(111) model catalyst. Based on the obtained C 1s and O 1s data, the dehydrogenation reaction of the alcohol and the formation of potential catalyst poisoning decomposition products are discussed.
We acknowledge financial support by the Bavarian Ministry of Economic Affairs, Regional Development and Energy, and by the DFG (Project No. 419654270). We thank HZB for the allocation of synchrotron radiation beamtime.