Transition‐metal Substituted Polyoxometalates as Soluble RedOx Mediators in Electrocatalytic Biomass Conversion

Author:

Mürtz Sonja D.1ORCID,Raabe Jan‐Christian2ORCID,Poller Maximilian J.2ORCID,Palkovits Regina13ORCID,Albert Jakob2ORCID,Kurig Nils1ORCID

Affiliation:

1. Institute for Technical and Macromolecular Chemistry RWTH Aachen University Worringerweg 2 52074 Aachen Germany

2. Institute for Technical and Macromolecular Chemistry University of Hamburg Bundesstr. 45 20146 Hamburg Germany

3. Institute for Sustainable Hydrogen Economy (INW-2) Forschungszentrum Jülich Am Brainergy Park 4 52428 Jülich Germany.

Abstract

AbstractPolyoxometalates (POMs) are known for their unique redox properties, making them interesting candidates as redox mediators in electro‐organic transformations. We investigated derivatives of H3[PMo12O40], a classical Keggin‐type POM, as a potential redox mediator in the indirect electrolysis of biobased glyceraldehyde (GLAD), focusing on the effects of double substitution of the Mo framework metal by redox active transition metals (Mo replaced by V, Ni, Co, Mn). By combining electrochemical techniques with HPLC, UV‐Vis spectroscopy, and 31P‐NMR spectroscopy, a comprehensive overview of the reaction pathways, as well as the electronic and structural changes of the POM during the reaction were revealed. This work not only contributes to the fundamental understanding of POMs as redox mediators, but also paves the way for innovative development of sustainable and environmentally friendly electro‐organic transformations.

Publisher

Wiley

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