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Issue 17, 2011
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Influence of amines on the size control of in situ synthesized ruthenium nanoparticles in imidazolium ionic liquids

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Abstract

Very stable suspensions of small sized (c.a. 1.2 nm) and homogeneously dispersed ruthenium nanoparticles (RuNPs) were obtained by decomposition, under H2, of 4-1,5-cyclooctadiene)(η6-1,3,5-cyclooctatriene)ruthenium(0), [Ru(COD)(COT)], in various imidazolium derived ionic liquids (ILs: [RMIm][NTf2] (R = CnH2n+1 where n = 2; 4; 6; 8; 10) and in the presence of amines as ligands (1-octylamine, 1-hexadecylamine). These nanoparticles were compared to others stabilized either in pure ILs or by the same ligands in THF. NMR experiments (13C solution and DOSY) demonstrate that the amines are coordinated to the surface of the RuNPs. These RuNPs were investigated for the hydrogenation of aromatics and have shown a high level of recyclability (up to 10 cycles) with neither loss of activity nor significant agglomeration.

Graphical abstract: Influence of amines on the size control of in situ synthesized ruthenium nanoparticles in imidazolium ionic liquids

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Publication details

The article was received on 03 Jun 2010, accepted on 21 Jan 2011 and first published on 18 Mar 2011


Article type: Paper
DOI: 10.1039/C0DT00596G
Citation: Dalton Trans., 2011,40, 4660-4668
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    Influence of amines on the size control of in situ synthesized ruthenium nanoparticles in imidazolium ionic liquids

    G. Salas, C. C. Santini, K. Philippot, V. Collière, B. Chaudret, B. Fenet and P. F. Fazzini, Dalton Trans., 2011, 40, 4660
    DOI: 10.1039/C0DT00596G

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