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Ruthenium Nanoparticles Intercalated in Hectorite: A Reusable Hydrogenation Catalyst for Benzene and Toluene
Auteur(s)
Mollwitz, Birgit
Dadras, Massoud
Laurenczy, Gabor
Meister, Annette
Meister, Götz
Date de parution
2007
In
Journal of Cluster Science, Springer, 2007/18/1/87-95
Résumé
The cationic organometallic aqua complexes formed by hydrolysis of [(C<sub>6</sub>H<sub>6</sub>)RuCl<sub>2</sub>]<sub>2</sub> in water, mainly [(C<sub>6</sub>H<sub>6</sub>)Ru(H<sub>2</sub>O)<sub>3</sub>]<sup>2+</sup>, intercalate into sodium hectorite by ion exchange, replacing the sodium cations between the anionic silicate layers. The yellow hectorite thus obtained reacts in ethanol with molecular hydrogen (50 bar, 100°C) with decomposition of the organometallic aqua complexes to give a black material, in which ruthenium(0) nanoparticles (9–18 nm) are intercalated between the anionic silicate layers, the charges of which being balanced by hydronium cations. The black ruthenium-modified hectorite efficiently catalyses the hydrogenation of benzene and toluene in ethanol (50 bar H<sub>2</sub>, 50°C), the turnover frequencies attaining 7000 catalytic cycles per hour.
Identifiants
Type de publication
journal article
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