Model arenes hydrogenation with silica-supported rhodium nanoparticles:The role of the silica grains and of the solvent on catalytic activities

Laurie Barthe (1) , A. Denicourt-Nowicki (2) , Alain Roucoux (2) , Karine Philippot (3) , Bruno Chaudret (3) , Mehrdji Hemati (1)

1 LGC - Laboratoire de Génie Chimique
2 ISCR - Institut des Sciences Chimiques de Rennes
3 LCC - Laboratoire de chimie de coordination

Silica-supported rhodium-based nanoheterogeneous catalysts were easily prepared by impregnation with a pre-stabilized colloidal suspension. The resulting catalysts contain rhodium nanoparticles well-dispersed in the silica pores with a mean size of 5 nm. Influence of the silica grains size and of the solvent was investigated in arenes hydrogenation. It appeared that the size of the silica grains has a minimal influence on the reaction rate but the supported nanocatalysts displayed higher TOFs in hexane than in water.

Mots clés: Hydrogenation; Rhodium(0) nanoparticles; Arene derivatives; Silica; Hydrogenation

Domaines: Catalyse; Génie chimique; Mécanique des solides [physics.class-ph]; Dynamique des Fluides [physics.flu-dyn]; Micro et nanotechnologies/Microélectronique

Laurie Barthe, A. Denicourt-Nowicki, Alain Roucoux, Karine Philippot, Bruno Chaudret, et al.. Model arenes hydrogenation with silica-supported rhodium nanoparticles:The role of the silica grains and of the solvent on catalytic activities. Catalysis Communications, 2009, vol. 10 (n° 8), pp. 1235-1239. ⟨10.1016/J.CATCOM.2009.01.026⟩. ⟨hal-00404184⟩