NDLI: On the non-ideal behavior of the homogeneous esterification reaction: a kinetic model based on activity coefficients

Content Provider	Springer Nature Link
Author	Hernández Montelongo, R. García Sandoval, J. P. Aguilar Garnica, E.
Copyright Year	2015
Abstract	In this paper, we propose a kinetic model that considers the non-ideal behavior of an homogeneous acid catalyzed esterification of free fatty acids (FFA) and that has been derived regarding the well-known Fischer–Speier esterification mechanism. This kinetic expression differs from those used in other studies because it is based on activity coefficients instead of concentrations. This fact allows the kinetic model to remain free of ad hoc functions or arbitrary parameters and it also allows to include explicitly the catalyst activity as a part of the model. The proposed model has been tested through experimental data derived from the esterification of oleic acid and also through experimental data taken from available literature. The results show that the inclusion of the catalyst activity within the kinetic model makes it possible to satisfactorily describe a couple of phenomena: the fast drop of the FFA’s concentration at the beginning of the reaction and the decrease of the reaction rate in the case when water is initially present or when it is produced along the reaction.
Starting Page	401
Ending Page	419
Page Count	19
File Format	PDF
ISSN	18785190
Journal	Reaction Kinetics and Catalysis Letters
Volume Number	115
Issue Number	2
e-ISSN	18785204
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-03-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Esterification Fischer–Speier mechanism Activity coefficient Kinetic model Biodiesel Free fatty acid Catalysis Physical Chemistry Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Catalysis

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