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

Authors

  • 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

DOI:

https://doi.org/10.2533/chimia.2021.724

Keywords:

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

Abstract

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.

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Published

2021-09-29

How to Cite

[1]
J. Zenner, G. Moos, K. L. Luska, A. Bordet, W. Leitner, Chimia 2021, 75, 724, DOI: 10.2533/chimia.2021.724.