ZIF-8 has been considered the first catalyst based on ZIFs materials for CO2 fixation via cycloaddition (Table ) . It catalyzed the cyclic carbonate formation, i.e., styrene carbonate from CO2 and styrene oxide, with a yield of 53.0% at 100 °C (Table ). Besides, the catalytic activity of the ZIF-8 catalyst was declined after recycling. After the reaction, the material lost its distinctive crystalline nature and catalytic performance. ZIF-68 was reported to remove CO2 via cyclic carbonate formation using styrene oxide under mild reaction conditions (120 °C and 1.00 MPa) . It yielded > 93.3% after 12 h . Dual-ligand ZIF (ZIF-8-90) was used for CO2 removal via the formation of five-membered cyclic carbonate with epichlorohydrin (ECH) . ZIF-8-90 exhibited high selectivity (> 99%) compared to ZIF-8 .