Bifunctional Imidazolium-Based Ionic Liquid Decorated UiO-67 Type MOF for Selective CO₂ Adsorption and Catalytic Property for CO₂ Cycloaddition with Epoxides

A bifunctional robust and highly porous imidazolium-based ionic liquid decorated UiO-67 type MOF (UiO-67-IL, 1 ) was successfully constructed via solvothermal assembly of the imidazolium-based ligand and Zr(IV) ions. It exhibits a highly selective adsorption for CO 2 over CH 4 and N 2 . Furthermore, 1 herein can be used as a highly active heterogeneous catalyst for CO 2 cycloaddition with epoxides under atmospheric pressure with or without cocatalyst TBAB ( n -Bu 4 NBr).