Tuning the selectivity of biomass oxidation over oxygen evolution on NiO-OH electrodes
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INVESTIGACIONMetadades
Títol
Tuning the selectivity of biomass oxidation over oxygen evolution on NiO-OH electrodesAutoria
Data de publicació
2021Editor
Royal Society of ChemistryISSN
1463-9262Cita bibliogràfica
GOUDA, Laxman, et al. Tuning the selectivity of biomass oxidation over oxygen evolution on NiO–OH electrodes. Green Chemistry, 2021, 23.20: 8061-8068.Tipus de document
info:eu-repo/semantics/articleVersió
info:eu-repo/semantics/publishedVersionResum
Electrochemical reactions powered by renewable electricity are an important means of reducing the carbon footprint of large-scale chemical processes. Here, we investigate the efficient conversion of biomass-derived ... [+]
Electrochemical reactions powered by renewable electricity are an important means of reducing the carbon footprint of large-scale chemical processes. Here, we investigate the efficient conversion of biomass-derived 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA), an important building block in the polymer and pharmaceutical industries, using a cheap and abundant nickel-based electrocatalyst. We elucidate the key factors for tuning the chemical selectivity for HMF oxidation over the competing oxygen evolution reaction (OER) at the catalyst surface. We show that the selectivity for HMF oxidation is enhanced by removing trace impurities of iron species as well as adjusting the composition of the alkali hydroxide electrolyte solution. LiOH solution without iron impurities is more favorable for HMF oxidation, whereas CsOH solution with iron species present is more active for the OER and unfavorable for HMF oxidation. Under optimized conditions, HMF oxidation in 1 M LiOH electrolyte solution without iron (pH 14) achieved 98% faradaic efficiency for the production of FDCA. The principles used in this work can be applied to other electrosynthetic reactions, in particular where the OER is the main competing side reaction. [-]
Publicat a
Green Chemistry, 2021, 23.20: 8061-8068Entitat finançadora
Generalitat Valencia | Ministerio de Economía y Competitividad
Codi del projecte o subvenció
GRISOLIAP/2018/A/070 | ENE2017-85087-C3-1-R
Drets d'accés
© The Royal Society of Chemistry 2021
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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