M. Mittelbach, M. Worgetter, J. Pernkopf and H. Junek, “Diesel Fuel Derived from Vegetable Oils, II Emission Tests Using Rape Oil Methyl Ester,” Energy in Agriculture, Vol. 4, 1985, pp. 207-215.doi10.1016/0167-5826(85)90017-8 - References

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M. Mittelbach, M. Worgetter, J. Pernkopf and H. Junek, “Diesel Fuel Derived from Vegetable Oils, II: Emission Tests Using Rape Oil Methyl Ester,” Energy in Agriculture, Vol. 4, 1985, pp. 207-215. doi:10.1016/0167-5826(85)90017-8

has been cited by the following article:

TITLE: Evaluation of Activation Energy and Thermodynamic Properties of Enzyme-Catalysed Transesterification Reactions

AUTHORS: Ravindra Pogaku, Jegannathan Kenthorai Raman, Gujjula Ravikumar

KEYWORDS: Activation Energy; Thermodynamic Properties

JOURNAL NAME: Advances in Chemical Engineering and Science, Vol.2 No.1, December 31, 2011

ABSTRACT: In this study, the activation energy and thermodynamic properties of immobilized enzyme catalysed transesterification reactions were evaluated based on the enzyme substrate transition theory. The activation energy for a enzyme catalysed biodiesel production system were found to be 4.25 (kcal/mole) for monoglyceride formation, 5.58(kcal/mole) for diglyceride formation and 5.50 (kcal/mole) for methyl ester formation respectively. The rate constants were found to be 3.2 × 1010(L/mol.sec) monoglyceride, 3.47 × 109 (L/mol.sec) for diglyceride and 3.93 × 109 (L/mol.sec) for methyl ester. Based on the present work and published literatures, the activation energy of enzyme-catalysed transesterification reactions were found to be lower than the chemical-catalysed and non-catalyzed transesterification reactions. The thermodynamic properties of immobilized enzyme-catalysed transesterification reaction were found to be Gibbs free energy (ΔG = –1.02 kcal/mol), enthalpy (ΔH = 544 cal/mol) and entropy (ΔS = 5.19 cal/Kmol).