Communication Dans Un Congrès Année : 2025

Highly selective Ni-Cu catalyst for HMF electrooxidation Z.

Résumé

Introduction Alkaline electrolysis of biomass-based molecules is an attractive alternative for green hydrogen production due to the co-production of added-value platform chemicals. Furthermore, the thermodynamic oxidation potential of biomass-derived molecules is much smaller than that of the oxygen evolution reaction (OER). 5-hydroxymethylfurfural (HMF) is attractive because one of its oxidation product, 2,5-furandicarboxylic acid (FDCA), is a monomer for bio-plastic production[1]. Ni-based catalysts are cost-effective materials for HMF selective electrooxidation (HMFOR) but Ni is only active from 1.4 VRHE because this potential is required to operando form the NiOOH active phase. Consequently, OER can compete with HMFOR and lower the efficiency of the process. This study aims to study the impact of Cu alloyed with Ni on the competition between HMFOR and OER. Materials and method Ni and Ni-Cu catalysts supported on Vulcan carbon were prepared by the NaBH4 reduction method[2]. A series of NixCuy catalysts (Ni10, Ni3Cu12, Ni8Cu7 and Ni12Cu3) was synthetized, with x and y indicating the Ni and Cu wt. loading measured by ICP, and characterized by XRD, TEM, XPS and Raman spectroscopy. The catalysts were dropped casted on glassy carbon rotating disc electrode (RDE) and on carbon paper (CP). HMFOR activity was investigated in 3-electrode electrochemical cells at pH 13 and 25°C with and without 10 mM HMF.

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Dates et versions

hal-05368262 , version 1 (17-11-2025)

Identifiants

  • HAL Id : hal-05368262 , version 1

Citer

Z. Yan, A. Boreave, F. Dappozze, J. Gonzalez Cobos, L. Massin, et al.. Highly selective Ni-Cu catalyst for HMF electrooxidation Z.. 5ème REUNION PLENIERES de la Fédération HYDROGENE (FRH2), Nov 2025, Sevrier, France. ⟨hal-05368262⟩
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