Title :

Selective aqueous phase hydrogenation of xylose to xylitol over SiO2-supported Ni and Ni-Fe catalysts: Benefits of promotion by Fe

Author(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

Journal title :

Applied Catalysis B: Environmental

Abbreviated title :

Applied Catalysis B: Environmental

Volume number :

298

Pages :

120564

Publisher :

Elsevier

Publication date :

2021-07-27

ISSN :

0926-3373

English keyword(s) :

Ni-Fe bimetallic particles
Biomass valorization
Hydrogenation
Kinetics
LEIS

HAL domain(s) :

Chimie/Catalyse
Chimie/Chimie organique

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Nanoparticules bimétalliques sans métal noble pour l'hydrogénation des sucres

Administrative institution(s) :

CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille

Collections :

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

Research team(s) :

Matériaux pour la catalyse (MATCAT)
Valorisation des alcanes et de la biomasse (VAALBIO)

Submission date :

2022-03-24T09:02:19Z
2023-05-09T10:46:43Z