Catalyst Optimisation for the Electrooxidation of 5-(hydroxymethyl)furfural to 2,5-furandicarboxylic Acid Under Acidic Conditions
Lewis Cousins a, Charlie Creissen a, Finley Lloyd a
a School of Chemical and Physical Sciences, Keele University, UK
Proceedings of Catalyst Design Strategies for Photo- and Electrochemical Fuel Synthesis (ECAT23)
Keele, United Kingdom, 2023 December 4th - 5th
Organizers: Charles Creissen, Qian Wang and Julien Warnan
Poster, Lewis Cousins, 027
Publication date: 10th October 2023

The optimisation of an electrocatalyst for the valorisation of 5-(hydroxymethyl)furfural (HMF) to 2,5-furandicarboxylic Acid (FDCA) under acidic conditions was investigated as part of this work. HMF is obtained via the dehydration of glucose and the conversion into FDCA enables green production of a highly versatile platform chemical. One such application involves polymerisation into polyethylene furanoate (PEF) where it is then used as an alternative to the petrochemically derived polyethylene terephthalate (PET), typically used in plastic bottles. Alterations to the catalyst synthesis procedure in conjunction with modifications to the catalyst support as well as changing the cell architecture from a H-cell to flow conditions, resulted in improved performance for the electrocatalytic conversion of HMF to FDCA. To enable reactions to take place under the acidic conditions, an acid-stable catalyst was required. MnOx has been shown to withstand highly acidic pH under applied anodic potentials, however the stability of the catalyst was the greatest obstacle to overcome.

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