With introduction of basic groups in the imidazole cation, the imidazole functional ionic liquid with an alkaline site was synthesised, which was immobilized on mesoporous molecular sieve SBA-15, and functionalized triethylamine immobilized ionic liquid material was obtained. The catalyst was characterized by FT-IR, TG-DTG, X-ray diffraction, transmission electron microscopy, N2 adsorption-desorption methods. Analysis by characterization showed that the immobilized catalyst surface area, pore volume and pore diameter decreased compared with those of pure silica SBA-15. The catalytic activity of the catalyst was investigated in the hydrolysis reaction of propylene carbonate, under conditions of enough water, reaction temperature of 140℃, the amount of catalyst 3%, and reaction time 2 h, where the best catalytic effect was obtained. The selectivity and yield were more than 99%, and the catalyst was reusable.
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