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Esterification of propanoic acid with ethanol, 1-propanol and butanol over a heterogeneous fiber catalyst
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Kemisk teknologi.
Vise andre og tillknytning
2005 (engelsk)Inngår i: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 115, nr 02-jan, s. 1-12Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2005. Vol. 115, nr 02-jan, s. 1-12
Emneord [en]
esterification, polymer-supported sulphonic acid catalyst, density, viscosity, activity, kinetic modeling, cation-exchange resin, vapor-phase esterification, ethyl-acetate production, acetic-acid, reactive distillation, carboxylic-acids, amyl alcohol, chemical-equilibrium, reaction-kinetics, activated carbon
Identifikatorer
URN: urn:nbn:se:kth:diva-15204DOI: 10.1016/j.cej.2005.08.012ISI: 000233581900001Scopus ID: 2-s2.0-27844483011OAI: oai:DiVA.org:kth-15204DiVA, id: diva2:333245
Merknad
QC 20100525Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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