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Article Dans Une Revue Journal of Materials Chemistry A Année : 2015

Biosourced mesoporous carbon with embedded palladium nanoparticles by a one pot soft-template synthesis: application to Suzuki reactions

Résumé

A simple, direct and environmentally-friendly one-pot preparation of a palladium-containing mesoporous carbon (Pd@MC) from a cheap, non-hazardous and easily accessible biopolymer (tannin) as a carbon precursor, Pluronic (R) F127 surfactant as a pore structuring agent and a palladium salt is reported. This material has the peculiarity to have palladium nanoparticles entrapped in irregular voids connected to the worm-like mesoporous network limiting palladium leaching while keeping good access to the reactants. It was successfully used as a catalyst for ligand-free Suzuki-Miyaura couplings of aryl bromides in a green solvent (propane-1,2-diol) in the presence of extremely low amounts of supported palladium (usually 30 mu equiv.). It is noteworthy that almost palladium-free products (containing less than 1.5 mu equiv. of precious metal) can be obtained. The possibility to reuse the catalyst was also ascertained.

Dates et versions

hal-01294571 , version 1 (29-03-2016)

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Citer

Clovis Peter, Antoine Derible, Jean-Michel Becht, Julien Kiener, Claude Le Drian, et al.. Biosourced mesoporous carbon with embedded palladium nanoparticles by a one pot soft-template synthesis: application to Suzuki reactions. Journal of Materials Chemistry A, 2015, 3 (23), pp.12297-12306. ⟨10.1039/c4ta06478j⟩. ⟨hal-01294571⟩
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