Role of the metal-support interface in the ...
Document type :
Article dans une revue scientifique: Article original
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Title :
Role of the metal-support interface in the hydrodeoxygenation reaction of phenol
Author(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]
Journal title :
Applied catalysis. B, Environmental
Abbreviated title :
Appl. Catal. B-Environ.
Volume number :
277
Publication date :
2020-11-15
ISSN :
0926-3373
English keyword(s) :
Phenol
Metal-support interface
Niobia
Bio-oil
Hydrodeoxygenation
Metal-support interface
Niobia
Bio-oil
Hydrodeoxygenation
HAL domain(s) :
Chimie/Catalyse
English abstract : [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 ...
Show more >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.Show less >
Show more >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.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Submission date :
2022-03-02T07:14:50Z