Deoxydehydration of glycerol to allyl ...
Document type :
Article dans une revue scientifique: Article original
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Title :
Deoxydehydration of glycerol to allyl alcohol catalysed by ceria-supported rhenium oxide
Author(s) :
Vargas, K. S. [Auteur]
Zaffran, Jeremie [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Araque Marin, Marcia Carolina [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Sadakane, M. [Auteur]
Hiroshima University
Katryniok, Benjamin [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Zaffran, Jeremie [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Araque Marin, Marcia Carolina [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Sadakane, M. [Auteur]
Hiroshima University
Katryniok, Benjamin [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Journal title :
Mol. Catal.
Volume number :
535
Pages :
112856
Publication date :
2023-01-25
ISSN :
2468-8231
HAL domain(s) :
Chimie/Catalyse
English abstract : [en]
The Deoxydehydration (DODH) of glycerol to allyl alcohol was studied over ceria-supported rhenium oxide catalyst. Mesoporous ceria materials were synthetized via a nanocasting process using SiO2 and activated carbon as ...
Show more >The Deoxydehydration (DODH) of glycerol to allyl alcohol was studied over ceria-supported rhenium oxide catalyst. Mesoporous ceria materials were synthetized via a nanocasting process using SiO2 and activated carbon as hard templates. The as-obtained ceria supports were impregnated with 2.5-10 wt.% ReOx. and applied in the DODH reaction of glycerol to allyl alcohol at 175°C in batch conditions using 2-hexanol as solvent and hydrogen donor. As the characterisations revealed that the template removal was a critical step in the synthesis of the mesostructured ceria via the nanocasting method, the influence of the presence of the hard template was studied in detail by comparison to commercial ceria supports. The catalyst based on the nanocasting ceria showed higher performance of up to 88% yield in allyl alcohol and was reusable for 3 cycles without reactivation step. No evidence of leaching was observed via hot filtration test. The characterisation of the catalyst by XPS revealed the presence of Re4+ species after test, which led us propose that two redox couples, namely Re7+/Re5+ and Re6+/Re4+, are involved during DODH of glycerol to allyl alcohol, which was further confirmed by DFT calculations.Show less >
Show more >The Deoxydehydration (DODH) of glycerol to allyl alcohol was studied over ceria-supported rhenium oxide catalyst. Mesoporous ceria materials were synthetized via a nanocasting process using SiO2 and activated carbon as hard templates. The as-obtained ceria supports were impregnated with 2.5-10 wt.% ReOx. and applied in the DODH reaction of glycerol to allyl alcohol at 175°C in batch conditions using 2-hexanol as solvent and hydrogen donor. As the characterisations revealed that the template removal was a critical step in the synthesis of the mesostructured ceria via the nanocasting method, the influence of the presence of the hard template was studied in detail by comparison to commercial ceria supports. The catalyst based on the nanocasting ceria showed higher performance of up to 88% yield in allyl alcohol and was reusable for 3 cycles without reactivation step. No evidence of leaching was observed via hot filtration test. The characterisation of the catalyst by XPS revealed the presence of Re4+ species after test, which led us propose that two redox couples, namely Re7+/Re5+ and Re6+/Re4+, are involved during DODH of glycerol to allyl alcohol, which was further confirmed by DFT calculations.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois
CNRS
Centrale Lille
ENSCL
Univ. Artois
Collections :
Research team(s) :
Valorisation des alcanes et de la biomasse (VAALBIO)
Submission date :
2023-10-24T14:33:44Z
2023-11-03T10:08:45Z
2023-11-03T10:08:45Z