In-Situ Investigations of Polyoxometalate-Catalysed Biomass Oxidation to Formic Acid by Using Multinuclear High Resolution Flow NMR Spectroscopy

Jan Dominik H. Krueger, Maximilian J. Poller, Catherine Lyall, John Lowe, Ulrich Hintermair, Jakob Albert

Research output: Contribution to journalArticlepeer-review

Abstract

Biomass valorisation over polyoxometalate-based (POM) catalysts is a promising strategy for green and sustainable chemistry. In order to further improve such processes e. g. by using different additives, a better understanding of the chemical influence of various additives on the catalyst is paramount. The main objective of this study is to gain a deeper understanding of the effects caused by various additives on the catalytically active vanadium species in the selective aerobic oxidation of carbohydrates to formic acid (esters). After carefully choosing a suitable model system, the oxidation of glycolaldehyde using the heteropolyacid H5PV2Mo10O40 (HPA-2) as a catalyst was studied in situ by Flow Nuclear magnetic resonance (FlowNMR) spectroscopy. These measurements allowed to identify the catalytically active isomer of the HPA-2-catalyst and to observe the influence of additives on the reaction kinetics in situ. These findings provide a good basis for further improving POM-based catalytic aerobic oxidation of biomass.

Original languageEnglish
Article numbere202400402
JournalChemCatChem
Early online date10 Apr 2024
DOIs
Publication statusPublished - 10 Apr 2024

Data Availability Statement

Data will be made available on request.

Keywords

  • Biomass oxidation
  • FlowNMR spectroscopy
  • formic acid
  • in-situ investigations
  • polyoxometalate

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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