title: The evaluation of various kinetic models for base-catalyzed ethanolysis of palm oil.
abstract: In this paper, the kinetics of palm oil ethanolysis with various models have been investigated in a temperature range of 25-55 °C. The highest yield was achieved when the conversion to ethyl ester was 97.5±0.5% in the stated temperature range, using ethanol:oil molar ratio of 12:1, and 1.0 wt.% sodium ethoxide. The level of conformity of the reaction with reversible second order, irreversible second order and first order kinetic models were evaluated by means of the R(2) values of the linear curves. The ethanolysis showed the best conformity with irreversible second order kinetic model with 92-98% level of confidence. The reaction rate constants were within 0.018-0.088 dm(3)/mol min and the activation energy of the reaction was 42.36 kJ/mol.
authors.affiliation: Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
authors.forename: Sanaz
authors.initials: S
authors.lastname: Shahla
authors.forename: Gek Cheng
authors.initials: GC
authors.lastname: Ngoh
authors.forename: Rozita
authors.initials: R
authors.lastname: Yusoff
mesh_terms: D002384:Catalysis; D003198:Computer Simulation; D004951:Esterification; D000431:Ethanol / Q000138:chemical synthesis* / Q000302:isolation & purification; D007700:Kinetics; D008956:Models, Chemical; D000073878:Palm Oil; D010938:Plant Oils / Q000737:chemistry*
chemical_list: D010938:Plant Oils; D000431:Ethanol; D000073878:Palm Oil