W-SBA based materials as efficient catalysts ...
Type de document :
Article dans une revue scientifique
URL permanente :
Titre :
W-SBA based materials as efficient catalysts for the ODS of model and real feeds: Improvement of their lifetime through active phase encapsulation
Auteur(s) :
Estephane, G. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Lancelot, Christine [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Blanchard, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Dufaud, V. [Auteur]
Université Claude Bernard Lyon 1 [UCBL]
Chambrey, Stephane [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Nuns, Nicolas [Auteur]
Université de Lille, Sciences et Technologies
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Toufaily, Joumana [Auteur]
Rafik Hariri University [RHU]
Hamiye, T. [Auteur]
Rafik Hariri University [RHU]
Lamonier, Carole [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Lancelot, Christine [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Blanchard, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Dufaud, V. [Auteur]
Université Claude Bernard Lyon 1 [UCBL]
Chambrey, Stephane [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Nuns, Nicolas [Auteur]
Université de Lille, Sciences et Technologies
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Toufaily, Joumana [Auteur]
Rafik Hariri University [RHU]
Hamiye, T. [Auteur]
Rafik Hariri University [RHU]
Lamonier, Carole [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Titre de la revue :
Applied Catalysis A. General
Numéro :
571
Pagination :
42-50
Éditeur :
Elsevier
Date de publication :
2019-02-05
ISSN :
0926-860X
Mot(s)-clé(s) en anglais :
Oxidative desulfurization
Phosphotungstic acid
Incorporation
DBT
SRGO
Phosphotungstic acid
Incorporation
DBT
SRGO
Discipline(s) HAL :
Chimie/Catalyse
Résumé en anglais : [en]
Incorporated W-SBA based catalysts were prepared by a direct synthesis method involving phosphotungstic acic (HPW) together with mixed structure directing agents, and by incipient wetness impregnation for comparison purpose. ...
Lire la suite >Incorporated W-SBA based catalysts were prepared by a direct synthesis method involving phosphotungstic acic (HPW) together with mixed structure directing agents, and by incipient wetness impregnation for comparison purpose. In the oxidative desulfurization CODS) of dibenzothiophene (DBT, 500-1500 ppmS) and of a Straight Run Gas Oil (SRGO, 2000 ppmS) in batch reactor, the impregnated solids showed higher efficiency than the incorporated ones, which was attributed to a better accessibility of the active phase present at the surface of the support in the impregnated catalysts. However, in continuous evaluation using a fixed bed reactor, the incorporated catalyst showed a stable conversion in the ODS of SRGO 2000 ppmS for 9 days while within 24 h the impregnated solid was almost completely deactivated. Higher interaction of the active phase with the support in incorporated catalysts was evidenced by Time-of-Flight Secondary Ions Mass Spectrometry (ToF-SIMS) analysis, which can be at the origin of less leaching of tungsten species during reaction and thus explain their better resistance towards deactivation. The lower efficiency of incorporated catalysts compared to impregnated ones in ODS reaction carried out in a batch reactor is clearly compensated by their resistance towards leaching of the active phase in a continuous test. These results highlight the importance of evaluating not only the catalysts performance but also their lifetime in conditions more representative of industrial ones.Lire moins >
Lire la suite >Incorporated W-SBA based catalysts were prepared by a direct synthesis method involving phosphotungstic acic (HPW) together with mixed structure directing agents, and by incipient wetness impregnation for comparison purpose. In the oxidative desulfurization CODS) of dibenzothiophene (DBT, 500-1500 ppmS) and of a Straight Run Gas Oil (SRGO, 2000 ppmS) in batch reactor, the impregnated solids showed higher efficiency than the incorporated ones, which was attributed to a better accessibility of the active phase present at the surface of the support in the impregnated catalysts. However, in continuous evaluation using a fixed bed reactor, the incorporated catalyst showed a stable conversion in the ODS of SRGO 2000 ppmS for 9 days while within 24 h the impregnated solid was almost completely deactivated. Higher interaction of the active phase with the support in incorporated catalysts was evidenced by Time-of-Flight Secondary Ions Mass Spectrometry (ToF-SIMS) analysis, which can be at the origin of less leaching of tungsten species during reaction and thus explain their better resistance towards deactivation. The lower efficiency of incorporated catalysts compared to impregnated ones in ODS reaction carried out in a batch reactor is clearly compensated by their resistance towards leaching of the active phase in a continuous test. These results highlight the importance of evaluating not only the catalysts performance but also their lifetime in conditions more representative of industrial ones.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Autre(s) projet(s) ou source(s) de financement :
Chevreul Institute (FR 2638)
Ministère de l’Enseignement Supérieur et de la Recherche
Région Nord – Pas de Calais
FEDER
Ministère de l’Enseignement Supérieur et de la Recherche
Région Nord – Pas de Calais
FEDER
Établissement(s) :
ENSCL
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Collections :
Équipe(s) de recherche :
Catalyse pour l’énergie (CATEN)
Date de dépôt :
2019-09-25T15:07:02Z
2020-10-22T13:08:21Z
2023-11-14T20:16:31Z
2020-10-22T13:08:21Z
2023-11-14T20:16:31Z
Fichiers
- Lancelot HPW SBA Applied A 571 2019 42.pdf
- Version finale acceptée pour publication (postprint)
- Accès libre
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