Recovery of Enlarged Olefin Metathesis Catalysts by Nanofiltration in an Eco-Friendly Solvent

Authors

  • Adel Keraani,

    1. CNRS – UMR “Sciences Chimiques de Rennes”, Université Rennes 1, Equipe Chimie et Ingénierie des Procédés, 263 avenue du général Leclerc, CS 74205, Bâtiment 10A, Case 1011, 35042 Rennes cedex (France), Fax: (+33) 22-323-5765
    Search for more papers by this author
  • Thierry Renouard Dr.,

    1. CNRS – UMR “Sciences Chimiques de Rennes”, Université Rennes 1, Equipe Chimie et Ingénierie des Procédés, 263 avenue du général Leclerc, CS 74205, Bâtiment 10A, Case 1011, 35042 Rennes cedex (France), Fax: (+33) 22-323-5765
    Search for more papers by this author
  • Cédric Fischmeister Dr.,

    1. CNRS – UMR “Sciences Chimiques de Rennes”, Université Rennes 1, Laboratoire Catalyse et Organométalliques, 263 avenue du général Leclerc, Bâtiment 10C, 35042 Rennes cedex (France), Fax: (+33) 22-323-6939
    Search for more papers by this author
  • Christian Bruneau Dr.,

    1. CNRS – UMR “Sciences Chimiques de Rennes”, Université Rennes 1, Laboratoire Catalyse et Organométalliques, 263 avenue du général Leclerc, Bâtiment 10C, 35042 Rennes cedex (France), Fax: (+33) 22-323-6939
    Search for more papers by this author
  • Murielle Rabiller-Baudry Prof.

    1. CNRS – UMR “Sciences Chimiques de Rennes”, Université Rennes 1, Equipe Chimie et Ingénierie des Procédés, 263 avenue du général Leclerc, CS 74205, Bâtiment 10A, Case 1011, 35042 Rennes cedex (France), Fax: (+33) 22-323-5765
    Search for more papers by this author

Abstract

This study was aimed at integrating a green separation process without phase change, namely nanofiltration, with olefin metathesis to recover the homogeneous catalyst. As the commercially available Hoveyda II catalyst was not sufficiently retained by the membrane, a set of homogeneous ruthenium-based catalysts were prepared to enhance the recovery of the catalyst by solvent-resistant commercial membranes made of polyimide (Starmem 228). The molecular weights of the catalysts were gradually increased from 627 to 2195 g mol−1, and recovery was found to increase from around 70 % to 90 % both in toluene and dimethyl carbonate. The most retained catalyst was then engaged in a series of model ring-closing metathesis reactions associated to a final nanofiltration step to recover and recycle the catalyst. Up to five cycles could be performed before a deterioration in the performance of the process was observed.

Ancillary