Kinetics of Esterification of Acetic Acid with Methanol in the Presence of Ion Exchange Resin Catalysts

Abstract

Esterification kinetics of acetic acid with methanol was studied with solid acid catalyst in an isothermal batch reactor at 333À353 K. Different types of ion exchange catalyst (Indion 130, Indion 190, and Amberlyst 15 wet) were used for the esterification of acetic acid. It was found that Indion 130 was an effective catalyst for acetic acid esterification. The effects of stirrer speed, reaction temperature, initial reactant concentration, and catalyst loading on reaction rate were investigated and optimized. Temperature dependence of the reaction rates and activation energies was determined by an Arrhenius plot. A complete kinetic equation for describing the reaction catalyzed by Indion 130 was developed. This equation can be used in the simulation and design of the catalytic distillation column for the synthesis of methyl acetate.

One‐step Preparation of Carbon‐based Solid Acid Catalyst from Water Hyacinth Leaves for Esterification of Oleic Acid and Dehydration of Xylose

“…For a catalyst loading of 7 wt. % and 1:20 oleic acid to methanol molar ratio, esterification proved sluggish at 35 °C, reaching only 40 % conversion after 10 h. Higher reaction temperatures (65–80 °C) greatly enhanced conversion, as could be expected through increased reaction rates . At 65 °C, 96 % conversion of oleic acid was achieved in 5 h, with near quantitative conversion after 3 h at 80 °C.…”

Kinetic and thermodynamic studies of the esterification of acidified oil catalyzed by sulfonated cation exchange resin

“…The conversion rate of FFAs increased rapidly from 53.76% to 91.87% when the SCER loading rose from 1.0 g to 5.0 g. However, the increase was no longer significant when the catalyst loading exceeded 5.0 g. For example, the conversion rate of FFAs increased slightly from 91.87% to 92.31% when SCER loading was increased from 5.0 g to 6.0 g. The possible reason was that there were not sufficient active catalytic sites in the reactant molecules to catalyze the reaction [4]. Apart from the increase in the conversion rate of FFAs, the viscosity of the reaction system increased when catalyst loading was over 5.0 g. Hence, the optimal SCER loading was determined to be 5.0 g. The interactions between catalyst and reactant were more obvious at the early stage of the reaction [30]. It can be found in Fig.…”

“…30.0°C), 5.64 (40.0°C), 4.76 (50.0°C), 4.13 (60.0°C) and 3.10 kJ/mol (65.0°C), respectively. If the enthalpy change with the temperature was assumed to be constant, Eq.…”

Performance of ion exchange resin as solid catalyst for the esterification of acetic acid with ethanol

“…Fractional coverage terms approximated using the relevant Langmuir adsorption isotherms yields equation (13) as the Eley-Rideal model equation with similar notations as in equation (10) (Schwarzer, 2006). …”