Design and Synthesis of ZIF-67@DIMIL as Catalyst for CO2 Fixation Reaction

Conversion of CO₂ into high-value-added industrial raw materials, chemicals, or fuels has been considered as a way to reducing the global warming. For this purpose, imidazolium ionic liquids functionalized ZIF-67 was designed and synthesized. The structure of functionalized ZIF-67 was investigated using various characterization techniques including FT-IR, FESEM, XRD, TGA, BET, and zeta potential. The exquisite combination of imidazolium ionic liquid and ZIF-67 generated the highly robust catalyst, which was applied as efficient catalyst for the catalytic conversion of CO₂ into cyclic carbonates. Furthermore, the recyclability of catalyst was studied and the catalytic activity of ZIF-67@DIMIL after six cycles confirmed that this catalyst can be viewed as a recyclable heterogeneous catalyst.