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- Title
Bleaching Earths as Powerful Additives for Ru-Catalyzed Self-Metathesis of Non-Refined Methyl Oleate at Pilot Scale.
- Authors
Allard, Jessica; Curbet, Idriss; Chollet, Guillaume; Tripoteau, Fabien; Sambou, Sophie; Caijo, Frédéric; Raoul, Yann; Crévisy, Christophe; Baslé, Olivier; Mauduit, Marc
- Abstract
A practical and cost-effective ruthenium-catalyzed self-metathesis of non-refined methyl oleate (85 %) derived from very high oleic sunflower oils was demonstrated at pilot scale using a robust and kg-scale commercially available SIPr-M71 pre-catalyst. The simple addition of 1 wt % bleaching earths (Tonsil 110FF) to a thermally pretreated oil could efficiently prevent catalyst deactivation. Remarkably, without the need for filtration, the catalytic system was able to achieve a turnover number (TON) of more than 744 000 at a catalyst loading of only 1 ppm. At large scale (up to 200 kg), the equilibrium of the self-metathesis reaction was reached within 1 hour at 50 °C under neat conditions at a very low 5 ppm catalyst loading to produce the expected primary metathesis products (PMP), that is, 9-octadecene and dimethyl-9-octadecenoate, with a productive TON of 94900.
- Subjects
RUTHENIUM; OLEATES; CATALYSTS; METATHESIS reactions; BIOMASS; BLEACHING (Chemistry)
- Publication
Chemistry - A European Journal, 2017, Vol 23, Issue 52, p12729
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201703049