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

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)

Interna författare/redaktörer

Publikationens författare: Johanna Lilja, Johan Wärnå, Tapio Salmi, Lars J.Pettersson, Johan Ahlkvist, Henrik Grénman, Mats Rönnholm, Dmitry Yu. Murzin
Förläggare: Elsevier
Publiceringsår: 2005
Tidskrift: Chemical Engineering Journal
Tidskriftsakronym: Chem. Eng. J.
Volym: 115
Nummer: 1-2
Artikelns första sida, sidnummer: 1
Artikelns sista sida, sidnummer: 12
Antal sidor: 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

Senast uppdaterad 2020-23-02 vid 05:49