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Effects of Lewis acid catalysts on the esterification kinetics of castor oil with oleic acid
Author(s) -
ErdemŞenatalar A.,
Erencek E.,
Tüter M.,
Erciyes A. T.
Publication year - 1994
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02542275
Subject(s) - catalysis , oleic acid , chemistry , castor oil , cobalt , lewis acids and bases , chloride , order of reaction , tin , kinetics , organic chemistry , inorganic chemistry , nuclear chemistry , reaction rate constant , biochemistry , physics , quantum mechanics
Abstract The effects of two Lewis acid catalysts, tin chloride and cobalt chloride, on the kinetics of the esterification reaction between castor oil and oleic acid have been investigated. Uncatalyzed and catalyzed reactions were carried out both in the presence of excess oil and with equivalent amounts of reactants at various temperatures. The reaction, with respect to castor oil concentration, is first‐order in all cases, whereas with acid concentration the reaction was observed to change from second‐order for the uncatalyzed reaction to first‐order for tin chloride‐catalyzed and to zero‐order for cobalt chloride‐catalyzed reactions. The order (with respect to acid) also changed with temperature for the cobalt chloride‐catalyzed reaction.