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Castor oil dehydration kinetics
Author(s) -
Guner F. Seniha
Publication year - 1997
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/s11746-997-0098-9
Subject(s) - catalysis , chemistry , kinetics , dehydration , p toluenesulfonic acid , castor oil , sodium bisulfite , chemical kinetics , iodine , order of reaction , dehydration reaction , nuclear chemistry , iodine value , reaction rate , organic chemistry , reaction rate constant , biochemistry , physics , quantum mechanics
The dehydration reaction kinetics of castor oil was investigated with sodium bisulfate‐sodium bisulfite mixture (SB‐SB) or p ‐toluenesulfonic acid as catalyst. Reactions were carried out at 210, 220, and 230°C, and a kinetic model was determined for each case. The reactions with SB‐SB catalyst at 210 and 220°C and with p ‐toluenesulfonic acid at 210°C followed second‐order kinetics. A first‐order rate equation showed the best fit to the experimental data for the reaction with SB‐SB at 230°C. p ‐Toluenesulfonic acid‐catalyzed reactions at 220 and 230°C were also first‐order reactions. Additionally, some mathematical equations were derived between iodine value, refractive index, viscosity, and reaction time.