Halide-free catalytic carbon dioxide fixation of epoxides to cyclic carbonates under atmospheric pressure. Issue 2 (17th December 2021)

• Record Type: Journal Article
• Authors: Mitra, Antarip; Biswas, Tanmoy; Ghosh, Sourav; Tudu, Gouri; Paliwal, Khushboo S.; Ghosh, Suptish; Mahalingam, Venkataramanan
• Is Part Of: Sustainable energy & fuels. Volume 6:Issue 2(2022)
• Page Start: 420
• Page End: 429
• Publication Date: 2021-12-17
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/d1se01513c
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : An efficient fixation of CO2 into epoxide is achieved by using a halide free aluminium-based polymeric material as catalysts under atmospheric pressure. Abstract : The conversion of epoxides to cyclic carbonates utilizing CO2 is one of the efficient approaches for CO2 fixation. The atmospheric fixation of CO2 generally requires the use of halogen containing catalysts or additionally halogen containing molecules as cocatalysts. However, due to the toxic nature of halogens, the development of halide-free catalysts to synthesize cyclic carbonates from epoxides has gained attention recently. In this work, a water stable aluminium-based polymeric halide free heterogeneous catalyst has been developed to perform epoxide ring expansion to cyclic carbonates using CO2 under atmospheric pressure in the absence of any solvent and cocatalysts. A wide range of epoxides are successfully converted to the corresponding cyclic carbonates in quantitative yield and with high selectivity. The developed catalyst is able to achieve gram scale synthesis of styrene carbonate from styrene oxide under optimized conditions. The material sustained six cycles of catalysis without compromising the catalytic activity and chemical integrity which further confirmed the heterogeneous nature of the catalyst.