Open AccessKinetic modelling of esterification of glycerol with acetic acid catalyzed by lewatite
Author(s) -
Lucky Setyaningsih,
Tintin Mutiara,
Achmad Chafidz,
Ariany Zulkania,
Mohammad Arif Andrianto,
N. L. Farikha
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/543/1/012008
Subject(s) - triacetin , acetic acid , glycerol , catalysis , selectivity , chemistry , materials science , nuclear chemistry , chromatography , organic chemistry
One of the ester product of glycerol and acetic acid is triacetin which has wide industrial aplication. In this study the esterification of glycerol with acetic acid over Lewatite catalyst to produce triacetin, were carried out. Lewatite is one of ion exchange resin, the use of ion exchange resins as catalyst will not produce waste, not corrosive, high thermal stability and has good selectivity. The esterification reaction of glycerol with acetic acid were performed in a three-neck flask with stirrer (175 rpm) at temperature (90 °C, 100 °C and 110 °C) and atmosphere pressure. A 9.66 % selectivity of triacetin with conversion (77.4 %) was achieved at 100 °C within 90 minutes of reaction time. This research aimed to report experimental data and kinetic modeling of glycerol esterification with acetic acid to evaluate and compare model performance and capability. A kinetic model was developed using a first order pseudo-homogeneous model according to the experimental data. The surface reaction of acetic acid with glycerol was assumed to be rate-controlling. The effect of temperature to rate of reaction constants can be expressed as follows: k r = 8.138 x 10 11 exp ( − 57 , 176.47 R T ) ( 1 s )