Rh NPs Immobilized on Phosphonium-based Supported Ionic Liquid Phases (Rh@SILPs) as Hydrogenation Catalysts


  • Johannes Zenner Max Planck Institute for Chemical Energy Converison
  • Gilles Moos Max Planck Institute for Chemical Energy Converison
  • Kylie L. Luska
  • Alexis Bordet Max Planck Institute for Chemical Energy Conversion
  • Walter Leitner Max Planck Institute for Chemical Energy Converison




Biomass, Hydrogenation, Phosphonium-based ionic liquids, Rhodium nanoparticles, Supported ionic liquid phases


A series of phosphonium-based supported ionic liquid phases (SILPs) was prepared for the immobilization of Rh nanoparticles (Rh@SILP). The influence of systematic variations in the structure of the ionic liquid-type molecular modifiers (anion, P-alkyl chain length) on the formation and catalytic properties of Rh nanoparticles (NPs) was investigated. Both the nature of the anion and the length of the P-alkyl chain were found to have a strong impact on the morphology of the NPs, ranging from small (1.2 - 1.7 nm) and well-dispersed NPs to the formation of large NPs (9.9 -16.5 nm) and/or aggregates. The catalytic properties of the resulting Rh@SILP materials were explored using the hydrogenation of benzylideneacetone and biomass-derived furfuralacetone as model reactions. The changes in ring and C=O hydrogenation activity as a function of the SILP structure and the Rh NPs size allowed for the selective synthesis of products with distinct molecular functionalities.




How to Cite

J. Zenner, G. Moos, K. L. Luska, A. Bordet, W. Leitner, Chimia 2021, 75, 724, DOI: 10.2533/chimia.2021.724.