Perovskite supported catalysts for the selective oxidation of glycerol to tartronic acid

Evans, Christopher D., Bartley, Jonathan K. ORCID: https://orcid.org/0000-0003-4640-541X, Taylor, Stuart H. ORCID: https://orcid.org/0000-0002-1933-4874, Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560 and Kondrat, Simon A. 2023. Perovskite supported catalysts for the selective oxidation of glycerol to tartronic acid. Catalysis Letters 153 , pp. 2026-2035. 10.1007/s10562-022-04111-2

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Abstract

Exceptional selectivity of LaMnO3 perovskite supported Au catalysts for the oxidation of glycerol to the dicarboxylate tartronic acid is reported. Through using monometallic Au, Pt or bimetallic Au:Pt nanoparticles the tartronic acid yield could be altered significantly, with a maximum yield of 44% in 6 h with Au/LaMnO3 and 80% within 24 h. These LaMnO3 supported catalysts were compared with conventionally TiO2 supported catalysts, which at comparable reaction conditions produced lactic acid, via a dehydration pathway, in high yield and a maximum tartronic acid yield of only 9% was observed. The LaMnO3 catalysts produced minimal lactic acid regardless of the supported metal, showing that the support structure influences the prevalence of dehydration and oxidation pathways. The choice of metal nanoparticle influenced product selectivity along the oxidation pathway for both LaMnO3 and TiO2 supported catalysts. Au catalysts exhibited a higher selectivity to tartronic acid, whereas AuPt catalysts produced glyceric acid and Pt catalysts produced predominantly C–C scission products.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Additional Information:	This article is licensed under a Creative Commons Attribution 4.0 International License
Publisher:	Springer
ISSN:	1011-372X
Funders:	EPSRC
Date of First Compliant Deposit:	30 August 2022
Date of Acceptance:	9 July 2022
Last Modified:	10 Feb 2024 02:16
URI:	https://orca.cardiff.ac.uk/id/eprint/152225

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