Title :

Preparation of nickel (oxide) nanoparticles confined in the secondary pore network of mesoporous scaffolds using melt infiltration

Author(s) :

Chen, Shuo [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Ciotonea, Carmen [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Ungureanu, Adrian [Auteur]
"Gheorghe Asachi" Technical University of Iasi [TUIASI]
Dumitriu, Emil [Auteur]
"Gheorghe Asachi" Technical University of Iasi [TUIASI]
Catrinescu, Cezar [Auteur]
"Gheorghe Asachi" Technical University of Iasi [TUIASI]
Wojcieszak, Robert [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Dumeignil, Franck [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
royer, sebastien [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Journal title :

Catalysis Today

Volume number :

334

Pages :

48-58

Publisher :

Elsevier

Publication date :

2019-08-15

English keyword(s) :

Nickel
Melt infiltration
Nanoparticles
Selective hydrogenation
Biomass
Mesoporous materials
Heterogeneous catalysis

HAL domain(s) :

Chimie/Catalyse

English abstract : [en]

Effective encapsulation strategies are highly sought-after in heterogeneous catalysis for preparing highly active and stable metal (oxide) nanocatalysts. Herein, we report an optimized Melt Infiltration (MI) procedure to ...
Show more >Effective encapsulation strategies are highly sought-after in heterogeneous catalysis for preparing highly active and stable metal (oxide) nanocatalysts. Herein, we report an optimized Melt Infiltration (MI) procedure to confine nickel(oxide) nanoparticles (NPs) into hierarchical microporous-mesoporous scaffolds. Three SBA-15 silicas were synthesized in order to obtain different degrees of interconnectivity between the main mesopores. The impact of the SBA-15 pore characteristics, i.e., this interconnectivity, also named secondary intra-wall porosity (IWP), on the final nickel (oxide) NPs size and localization has been specifically investigated. Using MI, which consisted in the diffusion of the precursor in the liquid state inside the porosity of the support in the presence of the native surfactant occluding the pores, a selective localization of the NiO NPs inside the IWP was obtained, without large NPs plugging the main mesopores if IWP pores connecting the main mesopores do exist. When IWP – selective localization – occurs for the NPs, they show a size directly depending on the IWP dimensions. The obtained materials were tested, after reduction, in the hydrogenation reactions of cinnamaldehyde and 5-hydroxymethylfurfural. The catalytic results underline the positive effect of IWP - confinement of NPs to obtain and maintain an elevated dispersion of the metallic Ni active phase and to reach a high catalytic activity in hydrogenation under mild reaction conditions.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

ENSCL
CNRS
Centrale Lille
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 :

2019-09-25T15:07:10Z
2019-10-09T06:43:26Z
2020-09-25T08:34:36Z
2021-03-15T15:28:52Z