METHOD FOR PREPARATION OF FIVE-MEMBERED CYCLIC CARBONATE BY USING IMMOBILIZED IONIC LIQUID ON A BIOPOLYMER CELLULOSE AS CATALYST

摘要

The present invention relates to a method to manufacture an ionic liquid catalyst immobilized on a biopolymer cellulose, and a method to manufacture five-membered cyclic carbonate using the same catalyst. An ionic liquid catalyst (CMIL-n-X) of imidazolate immobilized on a cellulose is manufactured by acidifying with hydrochloric acid and sodium carboxy methyl cellulose (Na-CMC) which is the biopolymer cellulose with an induced carboxyl group; thus manufacturing carboxy methyl cellulose (CMC) with an induced carboxyl group making N-imidazole react with (3-chlropropyl)triethoxy-silane and 1-alkylhalide, thus manufacturing SIL-n-X and making SIL-n-X react with the CMC. The synthesis of the five-membered cyclic carbonate is economically friendly, and needs a simple process. The catalyst is reused easily as the catalyst is not difficult to recover. According to the present invention, the five-membered cyclic carbonate can be synthesized in high yields under the conditions of relatively low pressures and low temperatures.