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

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posted on 2023-06-08, 11:29 authored by Christopher Evans, Jonathan Bartley, Stuart Taylor, Graham Hutchings, Simon KondratSimon Kondrat

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.

Funding

The UK Catalysis Hub -'Core'

Engineering and Physical Sciences Research Council

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The UK Catalysis Hub - 'Science': 1 - Optimising, predicting and designing new Catalysts

Engineering and Physical Sciences Research Council

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The UK Catalysis Hub - 'Science': 2 Catalysis at the Water-Energy Nexus

Engineering and Physical Sciences Research Council

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Hub 'Science' 3: Catalysis for the Circular Economy and Sustainable Manufacturing

Engineering and Physical Sciences Research Council

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History

School

  • Science

Department

  • Chemistry

Published in

Catalysis Letters

Volume

153

Issue

7

Pages

2026-2035

Publisher

Springer

Version

  • VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

Acceptance date

2022-07-09

Publication date

2022-08-18

Copyright date

2022

ISSN

1011-372X

eISSN

1572-879X

Language

  • en

Depositor

Dr Simon Kondrat. Deposit date: 12 July 2022

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