Titre :

Development of nickel supported La and Ce-natural illite clay for autothermal dry reforming of methane: Toward a better resistance to deactivation

Auteur(s) :

Akri, Mohcin [Auteur]
Pronier, Stéphane [Auteur]
Chafik, Tarik [Auteur]
Achak, Ouafae [Auteur]
Granger, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Simon, Pardis [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Trentesaux, Martine [Auteur]
Batiot-Dupeyrat, Catherine [Auteur]

Titre de la revue :

Applied Catalysis B. Environmental

Numéro :

205

Pagination :

519-531

Date de publication :

2017-05-15

Discipline(s) HAL :

Chimie/Catalyse

Résumé en anglais : [en]

The autothermal dry reforming of methane was performed using natural illite clay as catalyst support. Nickel containing Ce or La promoted catalysts were characterized by XRD and XPS analysis before reaction, after the ...
Lire la suite >The autothermal dry reforming of methane was performed using natural illite clay as catalyst support. Nickel containing Ce or La promoted catalysts were characterized by XRD and XPS analysis before reaction, after the reduction step and also after 24 h of reaction. The highest catalytic stability was obtained on the La-based catalyst. This result was attributed to the formation of a britholite phase during the reaction resulting from the migration of lanthanum into the bulk. This particular phase could prevent the formation of the FeNi3 alloy mainly observed on Ce-based material which is presumably much less active than metallic Ni particles towards the dry reforming reaction. A deep surface reconstruction, evidenced by XPS, proceeds during the reaction which complement structural characterization showing significant surface changes in Ni species that cooperate with the basic sites leading to higher catalytic activity and stability.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

Remédiation et matériaux catalytiques (REMCAT)

Date de dépôt :

2019-09-25T14:37:55Z