MAS NMR Strategies for the Characterization of Supported Molybdenum Catalysts - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied Magnetic Resonance Année : 2007

MAS NMR Strategies for the Characterization of Supported Molybdenum Catalysts

Résumé

After recalling a few advances on the understanding of hydrodesulfuration (HDS) molybdenum-based catalysts supported on amorphous oxides made by 1H, 29Si, and 27Al, we critically evaluate the potential of 95Mo magic-angle spinning nuclear magnetic resonance (MAS NMR) for gaining further insight into the structure of uncalcined precursors and sulfided HDS catalysts. It is shown that when performed at a very high field (19.6 T), it is indeed sensitive to the nature of the molybdenum–support interaction. In particular, a wide distribution of the molybdenum environment present on the surface was evidenced. However, the possibility to characterize sulfided catalysts by 95Mo MAS NMR appeared still an unmet challenge.

Mots clés

Domaines

Chimie
Fichier non déposé

Dates et versions

hal-03989211 , version 1 (14-02-2023)

Identifiants

Citer

Jean-Baptiste d'Espinose de Lacaillerie, Zehong Gan. MAS NMR Strategies for the Characterization of Supported Molybdenum Catalysts. Applied Magnetic Resonance, 2007, 32 (4), pp.499-511. ⟨10.1007/s00723-007-0033-0⟩. ⟨hal-03989211⟩
3 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More