Thermomorphic Polyethylene‐Supported Organocatalysts for the Valorization of Vegetable Oils and CO2. (16th December 2020)

• Record Type: Journal Article
• Authors: Akhdar, Ayman; Onida, Killian; Vu, Nam Duc; Grollier, Kevin; Norsic, Sébastien; Boisson, Christophe; D'Agosto, Franck; Duguet, Nicolas
• Is Part Of: Advanced sustainable systems. Volume 5:Number 2(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-12-16
• Subjects: carbon dioxide -- epoxides -- fatty carbonates -- organocatalysis -- thermomorphic polyethylene; Sustainable living -- Periodicals; Sustainability -- Periodicals; Green technology -- Periodicals; Periodicals; 628
• DOI: 10.1002/adsu.202000218
• Languages: English
• ISSNs: 2366-7486

Abstract

Abstract: A range of thermomorphic polyethylene‐supported organocatalysts is prepared from N ‐alkyl imidazoles and polyethylene iodide (PEI) with good yields (85–92%) and high funtionality (98–99%). The catalytic activity of these species is studied for the ring opening of epoxidized methyl oleate with CO2 to give the corresponding cyclic carbonate. The reaction is carried out at 100 °C to fully exploit the thermomorphic behavior of the organocatalysts. The optimized conditions (neat, 100 °C, and 20 bar of CO2 ) are applied to a range of epoxidized fatty acids, including an epoxidized rapeseed oil, to give the corresponding carbonates with good yields (75–96%). The catalyst recycling is also studied, and no significant loss of activity is observed after ten runs. The fatty carbonates are important intermediates for the preparation of non‐isocyanate polyurethanes (NIPUs). Abstract : Thermomorphic polyethylene‐supported organocatalysts are used to catalyze the formation of carbonates from epoxidized fatty acid derivatives and CO2 . Thanks to the thermomorphic behavior of the polyethylene support, the organocatalysts exhibit similar catalytic activities to homogeneous organocatalysts and can also be recovered and reused for ten cycles without significant loss of activity.