Unveiling the complementary mechanism in the one-pot synthesis of glycerol carbonate from CO2 and glycerol

Construction of DBU–based Poly (ionic liquid)s for the Conversion of CO2, Glycerol, and Propylene Oxide into Glycerol Carbonate

“…In the one-pot reaction of CO 2 , Gly, and PO, previous studies have shown that the important steps are considered to be the ring-opening of PO and the activation of the hydroxyl group of Gly. [14,22,38] The nucleophilicity of the catalyst is crucial for both the ring-opening of PO and the activation of hydroxyl group of Gly, [14] and it is affected by the cation-anion interaction of ILs. [39] To gain a deeper insight into the high catalytic activity of DBUbased PILs, DFT calculations were undertaken to evaluate the differences between three catalysts, DBU-based PÀ DVBÀ DBUVBI-1, imidazolium-based PÀ DVB-(vImÀ BuBr), [15] and quaternary ammonium-based AmbÀ OH-910-I, [16] which were adopted for the one-pot reaction of CO 2 , Gly, and PO.…”

“…DBU-based ILs have also shown high catalytic activity for the CO 2 cycloaddition and Gly transesterification in the one-pot synthesis of GC. [14,22] Density functional theory (DFT) calculations have demonstrated that the high efficiency of DBU-based ILs can be attributed to the synergistic effect of weak cation-anion interactions caused by the strong positive charge delocalisation ability of DBU onium. [14] However, to the best of our knowledge, heterogeneous PILs based on DBU have not yet been developed as well as the unproved catalytic performance.…”