| abstract |
The invention relates to a suspension of metal nanoparticles having an average size of between 1 and 20 nm in at least one non-aqueous ionic liquid said suspension also including at least one nitrogen ligand, wherein said metal nanoparticles include at least one zero-valence state transition metal selected from rhodium, ruthenium, iridium, nickel, and platinum alone or in combination, and wherein said nitrogen ligand is selected from the group including linear compounds including at least one nitrogen atom, non-aromatic cyclic compounds including at least one nitrogen atom, non-condensed aromatic compounds including at least one nitrogen atom, condensed aromatic compounds including one group of two aromatic cycles condensed by pairs and at least one nitrogen atom, condensed aromatic compounds including at least three aromatic cycles and one nitrogen atom, and condensed aromatic compounds including at least three aromatic cycles and at least two nitrogen atoms on the same aromatic cycle. |