Selective aqueous phase hydrogenation of ...
Type de document :
Article dans une revue scientifique: Article original
URL permanente :
Titre :
Selective aqueous phase hydrogenation of xylose to xylitol over SiO2-supported Ni and Ni-Fe catalysts: Benefits of promotion by Fe
Auteur(s) :
Sadier, Achraf [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Shi, Dichao [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Mamede, Anne-Sophie [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
PAUL, Sébastien [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Marceau, Eric [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Wojcieszak, Robert [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Shi, Dichao [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Mamede, Anne-Sophie [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
PAUL, Sébastien [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Marceau, Eric [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Wojcieszak, Robert [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Titre de la revue :
Applied Catalysis B: Environmental
Nom court de la revue :
Applied Catalysis B: Environmental
Numéro :
298
Pagination :
120564
Éditeur :
Elsevier
Date de publication :
2021-07-27
ISSN :
0926-3373
Mot(s)-clé(s) en anglais :
Ni-Fe bimetallic particles
Biomass valorization
Hydrogenation
Kinetics
LEIS
Biomass valorization
Hydrogenation
Kinetics
LEIS
Discipline(s) HAL :
Chimie/Catalyse
Chimie/Chimie organique
Chimie/Chimie organique
Résumé en anglais : [en]
A monometallic Ni and a bimetallic Ni-Fe catalyst were used in the aqueous phase hydrogenation of xylose in batch conditions (T = 50–150 °C, PH2 = 10–30 bar, xylose mass fraction in water = 3.7–11.0 wt.%) to evidence the ...
Lire la suite >A monometallic Ni and a bimetallic Ni-Fe catalyst were used in the aqueous phase hydrogenation of xylose in batch conditions (T = 50–150 °C, PH2 = 10–30 bar, xylose mass fraction in water = 3.7–11.0 wt.%) to evidence the benefits of promoting Ni by Fe. The activity of the catalysts increased with temperature, but a temperature of 80 °C allowed minimizing nickel leaching at full conversion. The presence of reduced Fe at the surface of the bimetallic nanoparticles increased both the first-order apparent rate constant and the adsorption constant of xylose. The catalytic activity of Ni/SiO2 strongly declined and no deactivation was found for the Ni-Fe catalyst. A restructuring of the bimetallic nanoparticles took place, as the size of the metal particles and the Fe proportion in the surface layers increased, suggesting a flattening and coalescing of the particles over the silica surface.Lire moins >
Lire la suite >A monometallic Ni and a bimetallic Ni-Fe catalyst were used in the aqueous phase hydrogenation of xylose in batch conditions (T = 50–150 °C, PH2 = 10–30 bar, xylose mass fraction in water = 3.7–11.0 wt.%) to evidence the benefits of promoting Ni by Fe. The activity of the catalysts increased with temperature, but a temperature of 80 °C allowed minimizing nickel leaching at full conversion. The presence of reduced Fe at the surface of the bimetallic nanoparticles increased both the first-order apparent rate constant and the adsorption constant of xylose. The catalytic activity of Ni/SiO2 strongly declined and no deactivation was found for the Ni-Fe catalyst. A restructuring of the bimetallic nanoparticles took place, as the size of the metal particles and the Fe proportion in the surface layers increased, suggesting a flattening and coalescing of the particles over the silica surface.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Équipe(s) de recherche :
Matériaux pour la catalyse (MATCAT)
Valorisation des alcanes et de la biomasse (VAALBIO)
Valorisation des alcanes et de la biomasse (VAALBIO)
Date de dépôt :
2022-03-24T09:02:19Z
2023-05-09T10:46:43Z
2023-05-09T10:46:43Z
Fichiers
- Hydrogenation%20of%20Xylose%20-21-06-2021-To%20be%20Submitted.pdf
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