Ruthenium nanoparticles intercalated in hectorite: A reusable hydrogenation catalyst for benzene and toluene

The cationic organometallic aqua complexes formed by hydrolysis of [(C 6H6)RuCl2]2 in water, mainly [(C6H6)Ru(H2O)3]2+, 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 H2, 50°C), the turnover frequencies attaining 7000 catalytic cycles per hour. © Springer Science+Business Media, LLC 2007.


Published in:
Journal of cluster science, 18, 87-95
Year:
2007
Note:
410
Laboratories:




 Record created 2009-05-12, last modified 2018-09-13


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