Role of the metal-support interface in the ...
Type de document :
Article dans une revue scientifique: Article original
URL permanente :
Titre :
Role of the metal-support interface in the hydrodeoxygenation reaction of phenol
Auteur(s) :
Abreu Teles, Camila [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Rabelo-Neto, Raimundo Crisostomo [Auteur]
Nhung, Duong [Auteur]
Quiroz, Jhon [Auteur]
Camargo, Pedro H. C. [Auteur]
Jacobs, Gary [Auteur]
Resasco, Daniel E. [Auteur]
Bellot Noronha, Fabio [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Rabelo-Neto, Raimundo Crisostomo [Auteur]
Nhung, Duong [Auteur]
Quiroz, Jhon [Auteur]
Camargo, Pedro H. C. [Auteur]
Jacobs, Gary [Auteur]
Resasco, Daniel E. [Auteur]
Bellot Noronha, Fabio [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Titre de la revue :
Applied catalysis. B, Environmental
Nom court de la revue :
Appl. Catal. B-Environ.
Numéro :
277
Date de publication :
2020-11-15
ISSN :
0926-3373
Mot(s)-clé(s) en anglais :
Phenol
Metal-support interface
Niobia
Bio-oil
Hydrodeoxygenation
Metal-support interface
Niobia
Bio-oil
Hydrodeoxygenation
Discipline(s) HAL :
Chimie/Catalyse
Résumé en anglais : [en]
In this work, the effect of interfacial sites between Pd particles and Nb2O5 species is investigated by testing a series of Pd-Nb2O5/SiO2 catalysts with different niobium loadings for the HDO reaction of phenol in the gas ...
Lire la suite >In this work, the effect of interfacial sites between Pd particles and Nb2O5 species is investigated by testing a series of Pd-Nb2O5/SiO2 catalysts with different niobium loadings for the HDO reaction of phenol in the gas phase. Important differences in the selectivity to deoxygenated product were observed depending on the presence of niobium oxide close to Pd particles, which reveals the key role of the type of active phase in the control of reaction steps. It was found that Pd/SiO2 catalyst promotes hydrogenation pathways, producing cyclohexanone as the major product. For Pd-Nb2O5/SiO2 catalyst containing a Nb/Pd molar ratio of 0.5, a sharp increase in the selectivity to benzene is observed (7.5-fold). Increasing the Nb/Pd molar ratio, the formation of benzene is enhanced. The results showed that the Pd-Nb2O5 interface, composed by an oxophilic oxide in the perimeter of the metal particle, is responsible for the activation of the Csingle bondO bond, promoting the deoxygenation reaction.Lire moins >
Lire la suite >In this work, the effect of interfacial sites between Pd particles and Nb2O5 species is investigated by testing a series of Pd-Nb2O5/SiO2 catalysts with different niobium loadings for the HDO reaction of phenol in the gas phase. Important differences in the selectivity to deoxygenated product were observed depending on the presence of niobium oxide close to Pd particles, which reveals the key role of the type of active phase in the control of reaction steps. It was found that Pd/SiO2 catalyst promotes hydrogenation pathways, producing cyclohexanone as the major product. For Pd-Nb2O5/SiO2 catalyst containing a Nb/Pd molar ratio of 0.5, a sharp increase in the selectivity to benzene is observed (7.5-fold). Increasing the Nb/Pd molar ratio, the formation of benzene is enhanced. The results showed that the Pd-Nb2O5 interface, composed by an oxophilic oxide in the perimeter of the metal particle, is responsible for the activation of the Csingle bondO bond, promoting the deoxygenation reaction.Lire moins >
Langue :
Anglais
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Date de dépôt :
2022-03-02T07:14:50Z