Pyrazolium ionic liquids with multiple active sites immobilized on mesoporous MCM-41 for chemical fixation of CO2 under mild conditions

Novel dicationic pyrazolium ILs supported on MCM-41 were rationally fabricated. The optimized C 6 Pz–APTES/MCM-41 catalyst achieves superior catalytic performance toward the CO 2 cycloaddition by integrating the HBDs (C3/C5–H) and mesoporous structures.