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http://dx.doi.org/10.9713/kcer.2012.50.2.217

Effect of ZnCl2 Co-catalyst in the Synthesis of Dimethyl Carbonate from Ethylene Carbonate and Methanol by Using Base Catalysts  

Kim, Dong-Woo (School of Chemical and Biomolecular Engineering, Pusan National University)
Park, Moon-Seok (School of Chemical and Biomolecular Engineering, Pusan National University)
Kim, Moon-Il (School of Chemical and Biomolecular Engineering, Pusan National University)
Park, Dae-Won (School of Chemical and Biomolecular Engineering, Pusan National University)
Publication Information
Korean Chemical Engineering Research / v.50, no.2, 2012 , pp. 217-222 More about this Journal
Abstract
The synthesis of dimethyl carbonate(DMC) is a promising reaction for the use of naturally abundant carbon dioxide. DMC has gained considerable interest owing to its versatile chemical reactivity and unique properties such as high oxygen content, low toxicity, and excellent biodegradability. In this study, the synthesis of DMC through the transesterification of ethylene carbonate(EC) with methanol was investigated by using ionic liquid and metal oxide catalysts. The screening test of different catalysts revealed that choline hydroxide ([Choline][OH]) and 1-n-butyl-3-methyl imidazolium hydroxide([BMIm][OH]) had better catalytic performance than metal salts catalysts such as MgO, ZnO and CaO. The effects of reaction parameters such as reaction temperature, MeOH/EC mole ratio, and carbon dioxide pressure on the reactivity of [Choline][OH] catalyst were discussed. High temperature and high MeOH/EC mole ratio were favorable for high conversion of EC. However, the yield of DMC showed a maximum when carbon dioxide pressure was 1.34 MPa, and then it decreased for higher carbon dioxide pressure. Zinc chloride($ZnCl_2$) was used as co-catalyst with the ionic liquid catalyst. The mixed catalyst showed a synergy effect on the EC conversion and DMC yield probably due to the acid-base properties of the catalysts.
Keywords
Ethylene Carbonate; Methanol; Dimethyl Carbonate; Ionic Liquid Catalyst;
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Times Cited By KSCI : 3  (Citation Analysis)
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