Titre :

From useless humins by-product to Nb@graphite-like carbon catalysts highly efficient in HMF synthesis

Auteur(s) :

El Fergani, Magdi [Auteur]
University of Bucharest [UniBuc]
Candu, Natalia [Auteur]
University of Bucharest [UniBuc]
Tudorache, Madalina [Auteur]
University of Bucharest [UniBuc]
Bucur, Cristina [Auteur]
Djelal, Nora [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Granger, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Coman, Simona M. [Auteur]
University of Bucharest [UniBuc]

Titre de la revue :

Applied Catalysis A : General

Numéro :

618

Pagination :

118130

Date de publication :

2021-05-25

ISSN :

0926860X

Discipline(s) HAL :

Chimie/Catalyse

Résumé en anglais : [en]

Highly dispersed supported NbOx species were prepared via a deposition precipitation-carbonization (DPC)-like method. As precursors for niobium species and carrier ammonium niobate(V) oxalate hydrate and humins were used. ...
Lire la suite >Highly dispersed supported NbOx species were prepared via a deposition precipitation-carbonization (DPC)-like method. As precursors for niobium species and carrier ammonium niobate(V) oxalate hydrate and humins were used. Characterization of the resulted catalysts indicated bi-functional acid-base niobium species anchored onto a highly hydrophobic graphite-like carbon structure. These catalysts were investigated in the one-pot conversion of glucose to 5-hydroxymethylfurfural (HMF) in a biphasic system consisting of a mixture of a 20 wt% NaCl aqueous solution phase and an organic extracting phase (methyl-isobutyl-ketone (MIBK), 2-tert-butylphenol (TBP) or 2-sec-butylphenol (SBP)). The optimization conditions afforded the highest yield to HMF (96 %) for the GHNb1.2 catalyst (with 2.5 wt%Nb), the base/acid sites ratio of 1.76, in biphasic TBP/water system, at 180 °C after 8 h.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

Remédiation et matériaux catalytiques (REMCAT)

Date de dépôt :

2022-03-24T09:02:34Z
2024-02-06T16:53:29Z