Preparation and Catalytic Performance of Supramolecular Ionic Liquid Catalyst

Abstract Supramolecular ionic liquid catalyst (SILC) was synthesized from 1,4-bis(2-hydroxy-ethoxybenzene) by substitution, ring-opening and cyclization reaction, etc. The chemical structures of SILC were characterized by FTIR and 1 HNMR. The catalytic performance of SILC was evaluated in a continuous distillation reactor for the synthesis of dimethyl carbonate from vinyl carbonate and methanol. And the service life of SILC was investigated. The results showed that the catalytic performance of SILC was not ideal when used alone, but the catalytic performance of the basic co-catalyst was significantly improved. Under the conditions of methanol and vinyl carbonate molar ratio of 10 : 1, the conversion rate of vinyl carbonate was 75.6%, and the selectivity of DMC was 91.4% at 110℃ for 4 h. The catalytic system can still maintain stable catalytic effect after being used for 6 times.