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Updated: Jun 7, 2026

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles
Published on: November 27, 2015
Transition-metal nanoparticles in imidazolium ionic liquids: recyclable catalysts for biphasic hydrogenation
Jairton Dupont1, Gledison S Fonseca, Alexandre P Umpierre
1Laboratory of Molecular Catalysis, Institute of Chemistry, Department of Metallurgy and Institute of Physics, UFRGS, Av. Bento Gonçalves, 9500 Porto Alegre 91501-970 RS Brazil. dupont@iq.ufrgs.br
Abstract:
1-n-Butyl-3-methylimidazolium hexafluorophosphate room-temperature ionic liquid is not only suitable as a medium for the preparation and stabilization of iridium nanoparticles but also ideal for the generation of recyclable biphasic catalytic systems for hydrogenation reactions. Thus, Ir(0) nanoparticles with a mean diameter of 2 nm have been prepared by reduction of Ir(I) dissolved in the ionic liquid with H2. This catalytic solution can be reused several times for the biphasic hydrogenation of olefins under mild reaction conditions.

