Abstract (EN):
The reaction kinetics of the esterification of acetic acid with ethanol, catalyzed both homogeneously by the acetic acid, and heterogeneously
by Amberlyst 15, have been investigated. The reactions were carried out at several temperatures between 303.15 and 353.15K and at various
starting reactant compositions. Homogeneous and heterogeneous reactions have been described using the models proposed by P¨opken et al.
[T. P¨opken, L. G¨otze, J. Gmehling, Reaction kinetics and chemical equilibrium of homogenously and heterogeneously catalyzed acetic acid
esterification with methanol and methyl acetate hydrolysis, Ind. Eng. Chem. Res. 39 (2000) 2601–2611]. These models use activities instead of
mole fractions. Activity coefficients have been calculated using ASOG [K. Kojima, K. Tochigi, Prediction of Vapor–liquid Equilibria by the ASOG
Method, Elsevier, Tokyo, 1979] and UNIFAC (Aa. Fredenslund, J. Gmehling, P. Rasmussen, Vapor–liquid Equilibria Using UNIFAC. A Group
Contribution Method, Elsevier, Amsterdam, 1977] methods.
A packed bed reactive distillation column filled with Amberlyst 15 has been employed to obtain ethyl acetate. The influence of feed composition
and reflux ratio have been analyzed
Idioma:
Inglês
Tipo (Avaliação Docente):
Científica