Active hydrogenation Rh nanocatalysts ...
Document type :
Article dans une revue scientifique
DOI :
Permalink :
Title :
Active hydrogenation Rh nanocatalysts protected by new self-assembled supramolecular complexes of cyclodextrins and surfactants in water
Author(s) :
Thanh Chau, Nguyet Trang [Auteur]
Menuel, Stephane [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Colombel-Rouen, Sophie [Auteur]
Guerrero, Miguel [Auteur]
Monflier, Eric [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Philippot, Karine [Auteur]
Denicourt-Nowicki, Audrey [Auteur]
Roucoux, Alain [Auteur]
Menuel, Stephane [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Colombel-Rouen, Sophie [Auteur]
Guerrero, Miguel [Auteur]
Monflier, Eric [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Philippot, Karine [Auteur]
Denicourt-Nowicki, Audrey [Auteur]
Roucoux, Alain [Auteur]
Journal title :
RSC Adv.
Volume number :
6
Pages :
108125-108131
Publication date :
2016-11-07
HAL domain(s) :
Chimie/Catalyse
English abstract : [en]
The stability of inclusion complexes between randomly methylated β-cyclodextrin (RaMeCD) or its leucine-grafted analogue (RaMeCDLeu) with two hydroxylated ammonium surfactants was investigated. The binding isotherms and ...
Show more >The stability of inclusion complexes between randomly methylated β-cyclodextrin (RaMeCD) or its leucine-grafted analogue (RaMeCDLeu) with two hydroxylated ammonium surfactants was investigated. The binding isotherms and complexation constants were measured using the Isothermal Titration Calorimetry (ITC) technique. These host–guest inclusion complexes were used as protective agents during the formation of rhodium(0) nanoparticles by chemical reduction of rhodium trichloride in water. The amount of protective agent was adjusted in order to ensure both stability and reactivity of the rhodium nanocatalysts under the catalytic conditions. The size and dispersion of air-stable and water-soluble rhodium suspensions were determined by Transmission Electron Microscopy (TEM) analyses. These spherical nanoparticles, with sizes between 1.20 to 1.50 nm according to the nature of inclusion complexes, were evaluated in the biphasic hydrogenation of various reducible compounds (olefins, linear or aromatic ketones), showing promising results in terms of activity and selectivity.Show less >
Show more >The stability of inclusion complexes between randomly methylated β-cyclodextrin (RaMeCD) or its leucine-grafted analogue (RaMeCDLeu) with two hydroxylated ammonium surfactants was investigated. The binding isotherms and complexation constants were measured using the Isothermal Titration Calorimetry (ITC) technique. These host–guest inclusion complexes were used as protective agents during the formation of rhodium(0) nanoparticles by chemical reduction of rhodium trichloride in water. The amount of protective agent was adjusted in order to ensure both stability and reactivity of the rhodium nanocatalysts under the catalytic conditions. The size and dispersion of air-stable and water-soluble rhodium suspensions were determined by Transmission Electron Microscopy (TEM) analyses. These spherical nanoparticles, with sizes between 1.20 to 1.50 nm according to the nature of inclusion complexes, were evaluated in the biphasic hydrogenation of various reducible compounds (olefins, linear or aromatic ketones), showing promising results in terms of activity and selectivity.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Catalyse et chimie supramoléculaire (CASU)
Submission date :
2019-09-25T14:05:05Z