Pt particles sintering on Pt/SiO2 during ...
Type de document :
Article dans une revue scientifique: Article original
URL permanente :
Titre :
Pt particles sintering on Pt/SiO2 during water denitrification
Auteur(s) :
Zaki, A. [Auteur]
Lancelot, Christine [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Dacquin, Jean-Philippe [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Granger, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Lancelot, Christine [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Dacquin, Jean-Philippe [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Granger, Pascal [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Titre de la revue :
Catalysis Communications
Nom court de la revue :
Catalysis Communications
Numéro :
148
Pagination :
106168
Date de publication :
2021-01
ISSN :
15667367
Résumé en anglais : [en]
Platinum particle growth in aqueous phase has been investigated at 20 °C in the course of nitrite (NO2−) reduction by H2 reaction. A shift from a monomodal to a bimodal particle size distribution on used catalysts is ...
Lire la suite >Platinum particle growth in aqueous phase has been investigated at 20 °C in the course of nitrite (NO2−) reduction by H2 reaction. A shift from a monomodal to a bimodal particle size distribution on used catalysts is accompanied with the disappearance of the smallest Pt particles in agreement with an Ostwald ripening mechanism. A two-step process involving consecutive dissolution and re- aggregation to form larger particles has been suggested according to a redox mechanism. Accordingly, the growth of large Pt particles at the expense of small ones induces a strengthening of the metallic character and a loss of Pt dispersion.Lire moins >
Lire la suite >Platinum particle growth in aqueous phase has been investigated at 20 °C in the course of nitrite (NO2−) reduction by H2 reaction. A shift from a monomodal to a bimodal particle size distribution on used catalysts is accompanied with the disappearance of the smallest Pt particles in agreement with an Ostwald ripening mechanism. A two-step process involving consecutive dissolution and re- aggregation to form larger particles has been suggested according to a redox mechanism. Accordingly, the growth of large Pt particles at the expense of small ones induces a strengthening of the metallic character and a loss of Pt dispersion.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Équipe(s) de recherche :
Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)
Matériaux pour la catalyse (MATCAT)
Remédiation et matériaux catalytiques (REMCAT)
Matériaux pour la catalyse (MATCAT)
Remédiation et matériaux catalytiques (REMCAT)
Date de dépôt :
2021-12-08T09:53:24Z
2022-03-01T16:29:51Z
2022-03-01T16:29:51Z
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