Electrochemical Cellobiose Valorization: Anodic Oxidation to Cellobionic Acid and Cathodic Reduction to Cellobitol
ChemistrySelect, vol. 8
Abstract
Abstract This study elucidates key parameters allowing the electrochemical valorization of cellobiose, by creating value‐added products by both, anodic oxidation, and cathodic reduction. We demonstrate the first electrochemical reduction of cellobiose to cellobitol in a divided cell using Pb as cathode, leading up to 49 % conversion, though with long reaction times (over 26 h) and low coulombic efficiency ( ) of 4 %. The successful synthesis of cellobionic acid was demonstrated by mediated oxidation in an undivided electrochemical cell, using a graphite anode and CaBr 2 as electrocatalytic mediator. Cellobiose oxidation was highly selective, allowing for up to 92 % conversion to cellobionic acid at 48 % when using a charge of 2 FE.
Authors 5
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Helmholtz Centre for Environmental Research
Affiliation as printed
Department of Environmental Microbiology Helmholtz-Centre for Environmental Research GmbH – UFZ Permoserstrasse 15 04318 Leipzig Germany
These authors contributed equally
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Affiliation as printed
Chair for Heterogeneous Catalysis and Technical Chemistry RWTH Aachen University Worringerweg 2 52074 Aachen Germany
Chair for Heterogeneous Catalysis and Technical Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
These authors contributed equally
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Affiliation as printed
Chair for Heterogeneous Catalysis and Technical Chemistry RWTH Aachen University Worringerweg 2 52074 Aachen Germany
Chair for Heterogeneous Catalysis and Technical Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
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Falk Harnisch corresponding
Helmholtz Centre for Environmental Research
Affiliation as printed
Department of Environmental Microbiology Helmholtz-Centre for Environmental Research GmbH – UFZ Permoserstrasse 15 04318 Leipzig Germany
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Affiliation as printed
Chair for Heterogeneous Catalysis and Technical Chemistry RWTH Aachen University Worringerweg 2 52074 Aachen Germany
Chair for Heterogeneous Catalysis and Technical Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
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