Solvent-free benzyl alcohol oxidation using spatially separated carbon-supported Au and Pd nanoparticles

Li, Xiaoliang, Zhao, Liang, Douthwaite, Mark, Wang, Kai, Akdim, Ouardia, Daniel, Isaac T., Oh, Rena, Liu, Lei, Wang, Zhe, Meng, Fanhui, Pattisson, Samuel, Lopez-Martin, Angeles, Yang, Jian, Huang, Xiaoyang Jerry, Lewis, Richard J. and Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560 2024. Solvent-free benzyl alcohol oxidation using spatially separated carbon-supported Au and Pd nanoparticles. ACS Catalysis 14 , 16551–16561. 10.1021/acscatal.4c05019

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Abstract

The spatial separation of Au and Pd nanoparticles supported on carbon has been demonstrated to be highly effective in facilitating aqueous-phase alcohol oxidation reactions, wherein OH– is the oxidant terminal for the oxidative dehydrogenation reaction. However, the application of this methodology in nonaqueous environments has not yet been explored. Supported alloyed Au–Pd nanoparticles are known to be highly active in the solvent-free oxidation of benzyl alcohol with oxygen as the terminal oxidant, leading to benzaldehyde by direct oxidation and toluene by disproportionation. Here, we show that by physically separating Au and Pd nanoparticles supported on carbon, the reaction rate for solvent-free benzyl alcohol oxidation can be further enhanced by coupling the oxidation and disproportionation reactions via H-transfer from Pd to Au.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	American Chemical Society
ISSN:	2155-5435
Funders:	EPSRC
Date of First Compliant Deposit:	1 November 2024
Date of Acceptance:	15 October 2024
Last Modified:	04 Nov 2024 12:00
URI:	https://orca.cardiff.ac.uk/id/eprint/173601

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