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A Study on Kinetics of Catalytic Esterification of Synthesis of Isoamyl Acetate over Cation-exchange Resin

The kinetic behavior of the esterification of acetic acid with isoamyl alcohol over a strong acidic cation-exchange resin,K2641,is investigated.The experiments were conducted in a stirred batch reactor to synthesize a value added ester,isoamyl acetate.The concentration of acetate acid varying with reaction time has been determined.From analogizing the data which were obtained from the experiment,the kinetic equation with the Arrhenius model has been derived,namely,r=-dc_(乙酸)dt=0.3656 dm~3/mol·s e~(-30120 J/molRT)c_(乙酸) c_(异戊醇)-8.44.04 dm~3/mol·s e~(-49750 J/molRT).The apparent activation energy and pre-exponential factor of forward reaction are 30.12 kJ/mol and 0.365 dm~3/mol·s,respectively;and the apparent activation energy and pre-exponential factor of reverse reaction are 49.75 kJ/mol and 844.04 mol/dm~3·s,respectively.