Title :

Enhancement of the dispersion and catalytic performances of copper in the hydrogenation of cinnamaldehyde by incorporation of aluminium into mesoporous sba-15 silica

Author(s) :

Ungureanu, Adrian [Auteur]
Chirieac, Alexandru [Auteur]
Ciotonea, Carmen [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
"Gheorghe Asachi" Technical University of Iasi [TUIASI]
Institut de Chimie des Milieux et Matériaux de Poitiers [IC2MP]
Mazilu, Irina [Auteur]
Catrinescu, Cezar [Auteur]
Petit, Sabine [Auteur]
Marceau, Eric [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
royer, sebastien [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Institut de Chimie des Milieux et Matériaux de Poitiers [IC2MP]
Dumitriu, Emil [Auteur]

Journal title :

Applied Catalysis A : General

Abbreviated title :

Appl. Catal. A-Gen.

Volume number :

598

Pages :

117615

Publisher :

Elsevier

Publication date :

2020-05-25

ISSN :

0926-860X

English keyword(s) :

Copper
Dispersion
Cinnamaldehyde
SBA-15
Hydrogenation

HAL domain(s) :

Chimie/Catalyse

English abstract : [en]

Copper is active in hydrogenation reactions, but it is a base metal difficult to disperse inside mesostructured supports, with adverse consequences on the catalytic properties. Incorporating aluminium into mesoporous SBA-15 ...
Show more >Copper is active in hydrogenation reactions, but it is a base metal difficult to disperse inside mesostructured supports, with adverse consequences on the catalytic properties. Incorporating aluminium into mesoporous SBA-15 silicas allows solving both problems of Cu dispersion and activity. The incorporation of 20 wt.% Al2O3 in the SBA-15 host structure leads to an increase of the copper metallic surface area by a factor 6 compared to the pure siliceous SBA-15-supported catalyst. The support also proves to be stable upon exposure to the impregnation aqueous solution used for copper introduction. The incorporation of Al provides Lewis acidic sites that favour the transformation of cinnamaldehyde into cinnamyl alcohol, a feature usually assigned to larger metal particles. As a consequence, the catalytic activity of Cu catalysts is enhanced compared to silica-supported Cu catalysts, while the chemoselectivity towards the unsaturated alcohol appears to be similar to that of a mesoporous alumina-supported system.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

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)

Submission date :

2022-03-02T07:14:40Z
2023-03-15T15:38:05Z