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Kinetics of Transesterification of Methyl Acetate and Ethanol Catalyzed by Ionic Liquid

Authors

  • Yanmei Peng,

    1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China
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  • Xianbao Cui,

    Corresponding author
    1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China
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  • Ying Zhang,

    1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China
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  • Tianyang Feng,

    1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China
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  • Zheng Tian,

    1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China
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  • Lexing Xue

    1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China
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ABSTRACT

The kinetic behavior and chemical equilibria for the transesterification of methyl acetate with ethanol to ethyl acetate and methanol catalyzed by an ionic liquid 4-(3-methyl-1-imidazolio)-1-butanesulfonic acid hydrogen sulfate ([HSO3-bmim]HSO4) were studied experimentally. The relationship of chemical equilibrium constants versus temperature was obtained from kinetic experimental data. The effects of temperature, initial molar ratio of ethanol to methyl acetate, and catalyst concentrations were investigated. Based on the reaction mechanism, an ideal homogeneous (IH) and two nonideal homogeneous models (NIH-1, NIH-2) were proposed to correlate the reaction kinetic data. The activity coefficient of the catalyst was considered in NIH-2 but not in the NIH-1 model. The nonideal homogeneous model NIH-1 was the best model to describe the kinetics of the transesterification reaction, and the accuracy of the reaction kinetic model is not improved by considering the effects of catalyst on the activities of the reactants and products.

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