Kinetics of Liquid Lipase NS81006-Catalyzed Alcoholysis of Oil for Biodiesel Production

doi:10.3724/SP.J.1088.2012.20638

Abstract

Abstract: Biodiesel production catalyzed by liquid lipase has been drawing more attention for its lower cost and faster reaction rate compared to immobilized lipase. The liquid lipase NS81006-catalyzed methanolysis and ethanolysis of soybean oil for biodiesel production were studied. A kinetic model was established by taking transesterification reactions, as well as hydrolysis and esterification reactions into consideration. The corresponding values of rate constants were then obtained for all forward and reverse reactions based on the model. The results show that the transesterification reaction rates are obviously higher than the hydrolysis reaction rates either with methanol or ethanol as the acyl acceptor. Further study indicates that the rate constants of ethanolysis are smaller than that of methanoslysis, which results in the difference in reaction rate between methanolysis and ethanolysis.

Key words: lipase, biodiesel, kinetics, transesterification, hydrolysis reaction

Lü Liang-Liang, DU Wei, LIU De-Hua. Kinetics of Liquid Lipase NS81006-Catalyzed Alcoholysis of Oil for Biodiesel Production[J]. Chinese Journal of Catalysis, 2012, 33(11): 1857-1861.

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URL: https://www.cjcatal.com/EN/10.3724/SP.J.1088.2012.20638

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