RT Journal Article T1 Catalytic Systems for the Effective Fixation of CO2 into Epoxidized Vegetable Oils and Derivates to Obtain Biobased Cyclic Carbonates as Precursors for Greener Polymers A1 Centeno-Pedrazo, Ander A1 Perez-Arce, Jonatan A1 Freixa, Zoraida A1 Ortiz, Pablo A1 Garcia-Suarez, Eduardo J. AB The chemical fixation of carbon dioxide by cycloaddition to biobased epoxides, e.g., vegetable oils, fatty acids, etc., is an efficient, sustainable, and clean strategy to obtain biobased cyclic carbonates. These can be used as feedstocks for the synthesis of environmentally friendly biobased polymers as an alternative to polymers used in daily life such as polyurethanes (PUs) and/or polycarbonates (PCs). Nevertheless, this reaction is not trivial at all due to both the low reactivity of the CO2 molecule and the nature of the needed substrates (biobased epoxides) where the epoxide groups are internal and sterically hindered, hampering the CO2 cycloaddition reaction. Therefore, the design of efficient catalytic systems to overcome these hurdles is mandatory. Most of the catalytic systems developed for this transformation aim to facilitate the rate-determining step in the CO2 cycloaddition catalytic cycle. They comprise an ionic liquid or an ionic compound with a nucleophilic anion alone or in the presence of a cocatalyst to assist the epoxide ring-opening. The most commonly used catalyst is tetrabutylammonium bromide [TBA][Br] ionic liquid, but other ammonium-, phosphonium-, and sulfonium-based ionic liquids in combination or not with a cocatalyst have also been disclosed in the literature. This Review presents a structured overview of the reported catalytic systems, both homogeneous and heterogeneous catalysts, employed in the transformation of any epoxidized vegetable oil or derivates into biobased carbonated materials. The different catalytic systems have been discussed and compared in terms of catalytic performance, employed substrates, and reaction conditions. SN 0888-5885 YR 2023 FD 2023-03-01 LK https://hdl.handle.net/11556/3063 UL https://hdl.handle.net/11556/3063 LA eng NO Centeno-Pedrazo , A , Perez-Arce , J , Freixa , Z , Ortiz , P & Garcia-Suarez , E J 2023 , ' Catalytic Systems for the Effective Fixation of CO 2 into Epoxidized Vegetable Oils and Derivates to Obtain Biobased Cyclic Carbonates as Precursors for Greener Polymers ' , Industrial & Engineering Chemistry Research , vol. 62 , no. 8 , pp. 3428-3443 . https://doi.org/10.1021/acs.iecr.2c03747 NO Publisher Copyright: © 2023 American Chemical Society. NO This publication is part of Projects PID2019-111281GB-I00 funded by MCIN/AEI/10.13039/501100011033; and IT1880-19, Elkartek KK-2021/00064, and KK-2022/00089 funded by EUSKO JAURLARITZA. DS TECNALIA Publications RD 29 jul 2024