Electrochemical valorization of HMF using Ni/Graphite electrodes
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Otros documentos de la autoría: Carvajal, David; Arcas, Ramón; Gouda, Laxman; Fabregat-Santiago, Francisco; Mas, Elena
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Título
Electrochemical valorization of HMF using Ni/Graphite electrodesFecha de publicación
2024-01Editor
ElsevierCita bibliográfica
CARVAJAL, David, et al. Electrochemical valorization of HMF using Ni/Graphite electrodes. Materials Chemistry and Physics, 2024, vol. 311, p. 128510.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S025405842301218XVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
The electrooxidation of 5-hydroxymethylfurfural (HMF) into 2,5- furandicarboxilic acid (FDCA) has been successfully accomplished using cost-effective NiO–OH electrodes, prepared through Ni electrodeposition on pencil ... [+]
The electrooxidation of 5-hydroxymethylfurfural (HMF) into 2,5- furandicarboxilic acid (FDCA) has been successfully accomplished using cost-effective NiO–OH electrodes, prepared through Ni electrodeposition on pencil graphite rods (Ni/PGR). Through meticulous optimization of the reaction conditions to prevent HMF degradation, we achieved almost complete conversion of HMF into FDC, in less than 2 h, with a remarkable 88 % Faraday efficiency. Electrochemical analyses have confirmed that our Ni(OH)2/NiOOH• catalyst requires a 0.16 V lower overpotential for HMF oxidation compared to water oxidation. Fitting the Impedance Spectroscopy (IS) spectra of the system have allowed us to elucidate, the details of the electrical response associated to HMF oxidation. These studies have revealed that following HMF activation, the surface of the Ni/PGR electrode remains coated with the reaction intermediates, thus triggering the complete oxidation to FDCA. [-]
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Materials Chemistry and Physics, 2024, vol. 311.Entidad financiadora
Agencia Estatal de Investigación | Universitat Jaume I | Generalitat Valenciana
Código del proyecto o subvención
PID2020-116093RB-C41 | MCIN/AEI/10.13039/501100011033 | UJI-B2022-33 | PROMETEO/2020/028 | GRISOLIAP/2019/057 | GRISOLIAP/2018/A/070
Derechos de acceso
info:eu-repo/semantics/openAccess
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