Abstract
A series of carboxyl functional multilayered supported ionic liquids were synthesized and used as efficient catalysts for chemical fixation of carbon dioxide to form cyclic carbonates without any co-solvent and co-catalyst. The excellent yield and selectivity of cyclic carbonate were given with using PS-ImEImECOOHI2 as a catalyst at 120°C and 2.0MPa for 2.0h. The synergistic effect of anions and cations in multilayered supported ionic liquids contributed to the good catalytic activity for the synthesis of cyclic carbonates from carbon dioxide and epoxide. Furthermore, the catalyst showed excellent stability and could be reused up to ten times without any significant loss of catalytic activity.
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