Kinetic modelling of the glycerol oxidation ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Kinetic modelling of the glycerol oxidation in the liquid phase: comparison of Pt, Au and Ag AS active phases
Auteur(s) :
Díaz, José Antonio [Auteur]
Institut de recherches sur la catalyse et l'environnement de Lyon [IRCELYON]
Skrzyńska, Elżbieta [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Zaid, Soraya [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Girardon, Jean-Sébastien [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Capron, Mickael [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Dumeignil, Franck [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Fongarland, Pascal [Auteur]
Laboratoire de Génie des Procédés Catalytiques [LGPC]
Institut de recherches sur la catalyse et l'environnement de Lyon [IRCELYON]
Skrzyńska, Elżbieta [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Zaid, Soraya [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Girardon, Jean-Sébastien [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Capron, Mickael [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Dumeignil, Franck [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Fongarland, Pascal [Auteur]
Laboratoire de Génie des Procédés Catalytiques [LGPC]
Titre de la revue :
Journal of Chemical Technology & Biotechnology
Numéro :
92
Pagination :
2267-2275
Date de publication :
2017
Discipline(s) HAL :
Chimie/Catalyse
Résumé en anglais : [en]
BACKGROUND
Unlike Pt and Au, Ag has recently been reported to be an active catalyst for the synthesis of glycolic acid from the liquid phase oxidation of glycerol (GLY). In order to provide comparative information about ...
Lire la suite >BACKGROUND Unlike Pt and Au, Ag has recently been reported to be an active catalyst for the synthesis of glycolic acid from the liquid phase oxidation of glycerol (GLY). In order to provide comparative information about the kinetics of this reaction using Pt, Au or Ag, a kinetic model was derived for each catalyst (Ag/, Pt/ and Au/Al2O3), using the experimental results obtained at different temperatures. RESULTS A power‐law kinetic model was proposed for each catalyst, which included the Khang–Levenspiel model to evaluate potential catalyst deactivation. All three kinetic models predicted well the experimental concentrations. Pt/ and Au/Al2O3 showed higher kinetic rate constants, the highest being that of the production of glyceric acid. The lower the metal particle size, the higher the kinetic rate constant of the production of glyceric acid was. Deactivation parameters played an important role in the model of Pt/Al2O3, so that Au/ and Ag/Al2O3 seemed to be more resistant to deactivation. CONCLUSIONS This work reports the first kinetic model for the oxidation of GLY using an Ag‐based catalyst. It showed a noticeable kinetic rate constant for the production of glycolic acid. The activation energies obtained were in the range 48–97 kJ mol−1.Lire moins >
Lire la suite >BACKGROUND Unlike Pt and Au, Ag has recently been reported to be an active catalyst for the synthesis of glycolic acid from the liquid phase oxidation of glycerol (GLY). In order to provide comparative information about the kinetics of this reaction using Pt, Au or Ag, a kinetic model was derived for each catalyst (Ag/, Pt/ and Au/Al2O3), using the experimental results obtained at different temperatures. RESULTS A power‐law kinetic model was proposed for each catalyst, which included the Khang–Levenspiel model to evaluate potential catalyst deactivation. All three kinetic models predicted well the experimental concentrations. Pt/ and Au/Al2O3 showed higher kinetic rate constants, the highest being that of the production of glyceric acid. The lower the metal particle size, the higher the kinetic rate constant of the production of glyceric acid was. Deactivation parameters played an important role in the model of Pt/Al2O3, so that Au/ and Ag/Al2O3 seemed to be more resistant to deactivation. CONCLUSIONS This work reports the first kinetic model for the oxidation of GLY using an Ag‐based catalyst. It showed a noticeable kinetic rate constant for the production of glycolic acid. The activation energies obtained were in the range 48–97 kJ mol−1.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)
Valorisation des alcanes et de la biomasse (VAALBIO)
Valorisation des alcanes et de la biomasse (VAALBIO)
Date de dépôt :
2019-09-25T14:05:31Z
2020-09-21T09:45:32Z
2020-09-21T09:45:32Z
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- Kinetics_GLY_Pt_Au_Ag_Article.pdf
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