UV-light induced photodegradation of bisphenol a in water: Kinetics and influencing factors |
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Authors: | Beibei Wang Feng Wu Peixia Li and Nansheng Deng |
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Institution: | (1) Division of Chemical Engineering, Pusan National University, 609-735 Busan, Korea (South) |
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Abstract: | The synthesis of dimethyl carbonate (DMC) from methanol and ethylene carbonate (EC) without using any solvent was investigated
in the presence of ionic liquids as catalysts. The conversion of ethylene carbonate was affected by the structure of ionic
liquid. For a series of 1-alkyl-3-methylimidazolium ionic liquids, the one with shorter alkyl chain and the one with more
nucleophilic anion showed higher reactivity. The conversion of EC also increased with CO2 pressure and reaction temperature. Esterification of EC and methanol can be considered as a pseudo-first order reaction with
respect to EC concentration. The activation energy was estimated as 50.1 kJ/mol. |
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Keywords: | Dimethyl carbonate transesterification ethylene carbonate methanol ionic liquid |
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