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Tuning the Product Selectivity of Single-Atom Alloys by Active Site Modification

Hannagan, RT; Wang, Y; Réocreux, R; Schumann, J; Stamatakis, M; Sykes, ECH; (2021) Tuning the Product Selectivity of Single-Atom Alloys by Active Site Modification. Surface Science , Article 121990. 10.1016/j.susc.2021.121990.

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Abstract

There is widespread interest in developing catalysts with uniform active sites that consist of single atoms, thereby simplifying the reaction mechanism and improving product selectivity. We examine experimentally how CO can be used to modify the active sites on a strong binding single-atom alloy and examine how this in turn impacts product selectivity for a reaction that has two different pathways. Specifically, we find that CO can be used to selectively block isolated Rh atom active sites in a RhCu(111) model single-atom alloy catalyst surface and promote the dehydrogenation pathway for adsorbed ethyl groups by suppressing the hydrogenation pathway.

Type: Article
Title: Tuning the Product Selectivity of Single-Atom Alloys by Active Site Modification
DOI: 10.1016/j.susc.2021.121990
Publisher version: https://doi.org/10.1016/j.susc.2021.121990
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10139080
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