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Methylated b-Cyclodextrin-Capped Ruthenium Nanoparticles: Synthesis Strategies, Characterization, and Application in Hydrogenation Reactions

Abstract : Colloidal suspensions of ruthenium nanoparticles (Ru0 NPs) stabilized by randomly methylated β-cyclodextrins were easily prepared in aqueous solution by two comparative reductive approaches. The first method relies on a one-step hydrogen reduction of ruthenium trichloride as a metal precursor in the presence of cyclodextrins (one-pot method). The second method consists of the chemical reduction of metal salts by NaBH4, followed by the stabilization of ruthenium NPs by post-addition of the methylated β-cyclodextrins (cascade method). The modified β-cyclodextrin-capped ruthenium NPs obtained were characterized using TEM, DLS, and NMR techniques. The highly dispersed colloidal suspensions contain very small particles in the size range of 1-1.4 nm. Their catalytic performances were investigated in terms of activity and selectivity of their biphasic hydrogenation of various substrates (olefins, ketones, and disubstituted arenes) under mild conditions.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-00844334
Contributor : Alain Roucoux <>
Submitted on : Monday, July 15, 2013 - 9:10:57 AM
Last modification on : Friday, July 10, 2020 - 4:03:06 PM

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Nguyet Trang Thanh Chau, Soraya Handjani, Jean-Paul Guégan, Miguel Guerrero, Eric Monflier, et al.. Methylated b-Cyclodextrin-Capped Ruthenium Nanoparticles: Synthesis Strategies, Characterization, and Application in Hydrogenation Reactions. ChemCatChem, Wiley, 2013, 5 (6), pp.1497-1503. ⟨10.1002/cctc.201200718⟩. ⟨hal-00844334⟩

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