In-situ Electrochemical Transformed Cu Oxide from Cu Sulfide for Efficient Upgrading of Biomass Derived 5-Hydroxymethylfurfural in Anion Exchange Membrane Electrolyzer.
ChemSusChem
; 15(23): e202201625, 2022 Dec 07.
Article
in En
| MEDLINE
| ID: mdl-36184569
ABSTRACT
The electrochemical transformation of biomass to high value-added products is attractive. Herein, Cu sulfide-mediated in-situ synthesis of Cu oxide was achieved for efficient electro-oxidation of biomass derived 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA). The copper foam-supported Cu sulfide (Cu-S/CF) was in-situ converted to Cu oxide during the electro-oxidation process. The in-situ formed Cu oxide presented high HMF conversion, FDCA yield, and faradaic efficiency in 1 m KOH with HMF concentration up to 100â
mm. The oxidation of HMF on Cu oxide started with the formation of high-valence Cu species with the assistance of OH- , which then oxidized HMF spontaneously. An anion exchange membrane (AEM) electrolyzer with Cu-S/CF as the anode was assembled to continuously produce FDCA with H2 generation at the cathode. The AEM electrolyzer ran stably for 60â
h with FDCA content higher than 85 % at a cell voltage between 1.50 and 1.60â
V.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Oxides
/
Sulfides
Language:
En
Journal:
ChemSusChem
Journal subject:
QUIMICA
/
TOXICOLOGIA
Year:
2022
Document type:
Article