Galvanic coupling measurements are a predictive tool for cooperative redox enhancement (CORE) in thermocatalytic alcohol oxidation

Kim, Bohyeon, Spragg, James, Daniel, Isaac, Miller, Samuel, Pattisson, Samuel, Lewis, Richard J., Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560 and McIntosh, Steven 2025. Galvanic coupling measurements are a predictive tool for cooperative redox enhancement (CORE) in thermocatalytic alcohol oxidation. ACS Catalysis 15 , pp. 18063-18068. 10.1021/acscatal.5c04484

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Abstract

The Cooperative Redox Enhancement (CORE) mechanism, driven by electrochemical coupling between physically separated yet electrically connected catalytically active sites, underpins significant rate enhancements in liquid-phase thermocatalytic reactions. In this study, we use galvanic coupling measurements to accurately predict the magnitude of this rate enhancement in Au–Pd bimetallic systems using the conversion of 1,4-butanediol as a model system. This electrochemical method enables the determination of the optimal ratio of Au/C to Pd/C monometallic catalysts and serves as a predictive approach across a range of reaction conditions. These findings underscore the utility of electrochemical measurements to evaluate and optimize bimetallic thermocatalytic systems, advancing strategies for liquid-phase redox reaction design.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Schools > Chemistry Research Institutes & Centres > Cardiff Catalysis Institute (CCI)
Additional Information:	License information from Publisher: LICENSE 1: URL: https://creativecommons.org/licenses/by-nc-nd/4.0/, Start Date: 2025-10-17
Publisher:	American Chemical Society
ISSN:	2155-5435
Date of First Compliant Deposit:	27 October 2025
Date of Acceptance:	12 September 2025
Last Modified:	27 Oct 2025 13:46
URI:	https://orca.cardiff.ac.uk/id/eprint/181917

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