Insights into the Catalytic Activity of Nitridated Fibrous Silica (KCC-1) Nanocatalysts from (15) N and (29) Si NMR Spectroscopy Enhanced by Dynamic Nuclear Polarization.

Aany Sofia Lilly Thankamony , Cédric Lion (1) , Frédérique Pourpoint (2) , Baljeet Singh (3) , Angel J Perez Linde , Diego Carnevale (4) , Geoffrey Bodenhausen (4, 5) , Hervé Vezin (6) , Olivier Lafon (2) , Vivek Polshettiwar (7)

1 CMF - Chimie Moléculaire et Formulation - EA 4478
2 UCCS - Unité de Catalyse et Chimie du Solide - UMR 8181
3 PNNL - Pacific Northwest National Laboratory
4 Institut des Sciences et Ingénierie Chimiques
5 UPMC - Université Pierre et Marie Curie - Paris 6
6 LASIRE - Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516
7 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier

Fibrous nanosilica (KCC-1) oxynitrides are promising solid-base catalysts. Paradoxically, when their nitrogen content increases, their catalytic activity decreases. This counterintuitive observation is explained here for the first time using (15) N-solid-state NMR spectroscopy enhanced by dynamic nuclear polarization.

Domaines: Chimie organique

Aany Sofia Lilly Thankamony, Cédric Lion, Frédérique Pourpoint, Baljeet Singh, Angel J Perez Linde, et al.. Insights into the Catalytic Activity of Nitridated Fibrous Silica (KCC-1) Nanocatalysts from (15) N and (29) Si NMR Spectroscopy Enhanced by Dynamic Nuclear Polarization.. Angewandte Chemie International Edition, 2014, 54 (7), pp.2190-2193 ⟨10.1002/anie.201406463⟩. ⟨hal-01091990⟩