Esterification of propanoic acid with ethanol, 1-propanol and butanol over a heterogeneous fiber catalyst

A1 Journal article (refereed)

Internal Authors/Editors

Publication Details

List of Authors: Johanna Lilja, Johan Wärnå, Tapio Salmi, Lars J.Pettersson, Johan Ahlkvist, Henrik Grénman, Mats Rönnholm, Dmitry Yu. Murzin
Publisher: Elsevier
Publication year: 2005
Journal: Chemical Engineering Journal
Journal acronym: Chem. Eng. J.
Volume number: 115
Issue number: 1-2
Start page: 1
End page: 12
Number of pages: 12
ISSN: 1385-8947
eISSN: 1873-3212


Esterification kinetics of propanoic acid with ethanol, 1-propanol and butanol over a fibrous polymer-supported sulphonic acid catalyst (Smopex-101) was studied. Experiments were carried out in a batch reactor operating isothermally at three different temperatures: 60, 70 and 75 degrees C (80 degrees C for butanol) and with different initial molar ratios of propanoic acid and alcohol (1:1, 1:2 and 2:1). The fiber catalyst was active and stable in all the experiments. The experimental results were modeled according to a Langmuir-Hinshelwood model and with an advanced adsorption-based model. The activity coefficients were calculated according to the UNIFAC model. The activation energy of esterification of propanoic acid with ethanol was found to be 52.6 kJ/mol, 49.9 kJ/mol with 1-propanol and 47.3 kJ/mol with butanol. The kinetic model, which includes the adsorption of carboxylic acid and water combined with the activities of the species, explained the experimentally recorded concentrations well.


activity, polymer-supported sulphonic acid catalyst, Viscosity

Last updated on 2020-05-08 at 07:23