FULL FACTORIAL EXPERIMENTAL DESIGN FOR HETEROGENEOUSLY CATALYSED ESTERIFICATION REACTIONS
Advancing the chemical engineering fundamentals
Chemical Reaction Engineering (T2-2P)
Keywords: Esterification, Experimental design, Ion-exchange resin, Isobutyl acetate, Kinetics.
Alime Izci Citak a,*, Duygu Deniz a, Ertugrul Izci b
a Department of Chemical Engineering, Eskisehir Osmangazi University, 26480 Eskisehir, Turkey
b Physics Department, Anadolu University, 26470 Eskisehir
*Corresponding author. Tel.: + 90-222-2393750-3285 ; Fax: + 90-222-2393613
E-mail addresses: acitak@ogu.edu.tr (A. Izci Citak), duygudeniz@birliksunger.com (D. Deniz), erizci@anadolu.edu.tr (E. Izci).
Isobutly acetate which is the product of this study is widely used in the industries of medicine, pesticide chemical, plastic, paint also used in the production of lacquer and similar coatings and in the food industry as flavoring agent. The esterification kinetics of acetic acid with isobutanol in the presence of Amberylst-36 as heterogeneous acid catalyst was investigated by applying experimental design. Experiments were carried out in a stirred batch reactor in the presence of dioxane. In order to examine the main factors and their interactions for the conversion of the acetic acid and the reaction rate of esterification, a factorial of the type (2)^3 has been used. Effects of catalyst loading, speed of agitation and reaction temperature were selected as the factors with the high and low level. The statistical test showed that the reaction temperature and the catalyst loading are highly effective on the reaction rate but there is no influence of the stirrer speed. Regression equation formulated for reaction rate was represented as a function of response variables. Also, from the reaction rate data a pseudo-homogeneous model was developed and activation energy was determined. It was found that the surface reaction is rate-limiting step.
Presented Tuesday 18, 13:30 to 15:00, in session Chemical Reaction Engineering (T2-2P).
