Development of Porous Organic Polymer based Catalyst for solvent and cocatalyst free CO2 fixation

Mandal, Saikat (2022) Development of Porous Organic Polymer based Catalyst for solvent and cocatalyst free CO2 fixation. Masters thesis, Indian Institute of Science and Research Kolkata.

Text (MS dissertation of Saikat Mandal (17MS019)) 17MS019_Thesis_file.pdf - Submitted Version Restricted to Repository staff only Download (3MB)

Abstract

Capture and conversion of carbon dioxide is one of the major green and efficient strategies to reduce the excess CO₂ present in the atmosphere. In this context, several homogenous and heterogeneous catalysts have been developed. Herein, we have designed and synthesized an efficient porous organic polymer based robust, heterogeneous catalyst for CO₂ fixation into epoxide for the synthesis of cyclic carbonate. The catalyst is able to work in metal and halide free conditions under atmospheric pressure. Epoxide are activated through H-bonding interaction with the secondary amine group of the organocatalyst while nucleophilic nitrogen atom of the pyrimidine ring attacks the epoxide ring in SN2 fashion and promote the CO₂ incorporation. Additionally, the catalyst is recyclable up to five consecutive cycles.

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