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Heterogeneously Catalyzed Esterification Reaction: Experimental and Modeling Using Langmuir- Hinshelwood Approach

Nada S. Ahmedzeki ندى سعدون احمد زكي --- Maha H. Alhassani مها هادي --- Hayder A. Al-jandeel حيدر عبد الكريم

Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط
ISSN: 19974884/E26180707 Year: 2013 Volume: 14 Issue: 4 Pages: 45-52
Publisher: Baghdad University جامعة بغداد

Abstract

The esterification reaction of ethyl alcohol and acetic acid catalyzed by the ion exchange resin, Amberlyst 15, was investigated. The experimental study was implemented in an isothermal batch reactor. Catalyst loading, initial molar ratio, mixing time and temperature as being the most effective parameters, were extensively studied and discussed. A maximum final conversion of 75% was obtained at 70°C, acid to ethyl alcohol mole ratio of 1/2 and 10 g catalyst loading. Kinetic of the reaction was correlated with Langmuir-Hanshelwood model (LHM). The total rate constant and the adsorption equilibrium of water as a function of the temperature was calculated. The activation energies were found to be as 113876.9 and -49474.95 KJ per Kmol of acetic acid for the esterification reaction and the heat of adsorption of water. These results agreed well with the previous published data.

Keywords

Esterification --- Langmuir- Hinshelwood --- Heterogeneous Catalyzed Reaction