Kinetics of the catalytic esterification of castor oil with lauric acid using <Emphasis Type="Italic">n</Emphasis>-butyl benzene as a water entrainer |
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Authors: | Mangesh?G?Kulkarni Email author" target="_blank">Sudhirprakash?B?SawantEmail author |
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Affiliation: | (1) Chemical Engineering Department, Institute of Chemical Technology, University of Mumbai, Nathalal Parekh Marg, Matunga, 400 019 Mumbai, India |
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Abstract: | The esterification of castor oil with lauric acid was investigated using tetra n-butyl titanate (TBT), SnCl2·2H2O (stannous chloride), CoCl2·6H2O (cobalt chloride), and (CH3COO)2Zn·2H2O (zinc acetate dihydrate) as catalysts. Effects of catalyst concentration and reaction temperature on the progress of the
reaction were investigated. TBT was the best catalyst for the esterification of castor oil with lauric acid at temperatures
lower than 200°C. The reaction was first order with respect to each reactant. The activation energy for the esterification
reaction of castor oil with lauric acid using TBT was 26.69 kcal/mol. The rate constants obtained for the esterification of
castor oil with decanoic, lauric, palmitic, and stearic acids were nearly the same (15.80, 15.44, 15.06, and 14.67 mL mol−1 min−1), as were the rate constants obtained for the reaction of castor oil and hydrogenated castor oil. |
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Keywords: | Castor oil decanoic acid kinetics of esterification lauric acid palmitic acid stearic acid tetra n-butyl titanate |
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