CuO/CeO2 catalysts for glycerol selective ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
CuO/CeO2 catalysts for glycerol selective conversion to lactic acid
Auteur(s) :
Palacio, Ruben [Auteur]
Universidad de Antioquia = University of Antioquia [Medellín, Colombia]
Torres, Sebastian [Auteur]
Universidad de Antioquia = University of Antioquia [Medellín, Colombia]
Royer, sebastien [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Mamede, Anne-Sophie [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
López, Diana [Auteur]
Universidad de Antioquia = University of Antioquia [Medellín, Colombia]
Hernández, Diana [Auteur]
Universidad de Antioquia = University of Antioquia [Medellín, Colombia]
Universidad de Antioquia = University of Antioquia [Medellín, Colombia]
Torres, Sebastian [Auteur]
Universidad de Antioquia = University of Antioquia [Medellín, Colombia]
Royer, sebastien [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Mamede, Anne-Sophie [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
López, Diana [Auteur]
Universidad de Antioquia = University of Antioquia [Medellín, Colombia]
Hernández, Diana [Auteur]
Universidad de Antioquia = University of Antioquia [Medellín, Colombia]
Titre de la revue :
Dalton Transactions
Nom court de la revue :
Dalton Trans.
Numéro :
47
Pagination :
4572-4582
Éditeur :
Royal Society of Chemistry (RSC)
Date de publication :
2018-02-16
Discipline(s) HAL :
Chimie/Catalyse
Résumé en anglais : [en]
Ceria supported copper oxide catalysts were produced by a deposition–precipitation method, at a high copper loading (up to >25 wt%). These materials demonstrated excellent properties for glycerol selective conversion to ...
Lire la suite >Ceria supported copper oxide catalysts were produced by a deposition–precipitation method, at a high copper loading (up to >25 wt%). These materials demonstrated excellent properties for glycerol selective conversion to lactic acid, with a conversion reaching up to 87% with a selectivity to lactic acid of 74% (8 h reaction, 220 °C, under N2 pressure). These catalysts also exhibited high stability upon 5 successive reaction cycles. The formation of a crystalline CuO phase was demonstrated in the nanocomposites at a high Cu loading, with elongated shaped particles formed on the cerium oxide surface. Such particles were however, not observed at low Cu loadings. XPS analysis revealed that Cu(II) was the main Cu species on the fresh catalyst, and that this species was reduced to Cu(I) during the reaction. Complementary characterization over the spent catalyst clearly showed the morphological modifications of the CuO phase, however, did not impact significantly either glycerol conversion or selectivity to lactic acid upon recycling. For instance, apparently, the catalytic activity of CuO largely depends on the Cu(II) species.Lire moins >
Lire la suite >Ceria supported copper oxide catalysts were produced by a deposition–precipitation method, at a high copper loading (up to >25 wt%). These materials demonstrated excellent properties for glycerol selective conversion to lactic acid, with a conversion reaching up to 87% with a selectivity to lactic acid of 74% (8 h reaction, 220 °C, under N2 pressure). These catalysts also exhibited high stability upon 5 successive reaction cycles. The formation of a crystalline CuO phase was demonstrated in the nanocomposites at a high Cu loading, with elongated shaped particles formed on the cerium oxide surface. Such particles were however, not observed at low Cu loadings. XPS analysis revealed that Cu(II) was the main Cu species on the fresh catalyst, and that this species was reduced to Cu(I) during the reaction. Complementary characterization over the spent catalyst clearly showed the morphological modifications of the CuO phase, however, did not impact significantly either glycerol conversion or selectivity to lactic acid upon recycling. For instance, apparently, the catalytic activity of CuO largely depends on the Cu(II) species.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Équipe(s) de recherche :
Matériaux pour la catalyse (MATCAT)
Date de dépôt :
2019-09-25T14:38:12Z
2021-03-18T13:12:19Z
2021-03-18T13:12:19Z