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Chemcial Industry and Engineering 2015, Vol. 32 Issue (2) :18-24    DOI: 10.13353/j.issn.1004.9533.2015.02.004
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Synthesis of Cyclic Carbonate from CO2 and Epoxide Catalyzed by Inorganic Silica Supported Acidic Ionic Liquid
Tang Jingya, Wang Hua, Han Jinyu, Yao Rui
Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract Four efficient catalysts composed of inorganic silica supported acidic ionic liquid were developed and showed high activities for the coupling reaction of expoxide and CO2. The effects of catalysts, CO2 pressure, reaction temperature, reaction time and catalyst amount have been investigated systematically. When all the silica supported ionic liquids were used as the catalyst, the conversion of PO was more than 95%. The highest selectivity of PC was 90.6% when 0.5 g [Smim]HSO4 was used as the catalysts. A high conversion of PO (96.3%) could be reached at 140 �� with a low CO2 pressure (1.0 MPa) and 2.5 mL PO for 5 h in the present of 0.5 g [Smim] HSO4. The catalyst could be reused for six times without apparent loss of catalytic activity. A proposed mechanism for the coupling reaction of CO2 and PO is suggested.
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Keywords�� carbon dioxide��   expoxide   ��cycloaddition reaction��   cyclic carbonate��   supported-ionic liquid��   inorganic silica     
Received 2013-07-22;
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Tang Jingya, Wang Hua, Han Jinyu, Yao Rui.Synthesis of Cyclic Carbonate from CO2 and Epoxide Catalyzed by Inorganic Silica Supported Acidic Ionic Liquid[J]  Chemcial Industry and Engineering, 2015,V32(2): 18-24
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