Chinese Journal of Applied Chemistry

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Kinetic Study of the Esterification of Acrylic Acid with Methanol Catalyzed by Strong-acid Cation Exchange Resin

PAN Jiajia, ZHANG Beike*, LU Bingnan   

  1. (College of Information Science & Technology,Beijing University of Chemical Technology,Beijing 100029,China)
  • Received:2013-02-28 Revised:2013-04-09 Published:2014-02-10 Online:2014-02-10
  • Contact: Beike Zhang

Abstract: The methyl acrylate was synthesized from acrylic acid and methanol by using strong-acid cation exchange resin, Amberlyst-15, as catalyst and the hydroquinone as polymerization inhibitor. Effects of molar ratio of methanol to acrylic acid, amounts of catalyst and reaction temperature on esterification rate of acrylic acid were investigated. It was found that the reaction rate and the fractional conversion of acrylic acid increased with increasing the temperature or the catalyst′s amounts, while the reaction rate increased first and then decreased with the increase of the molar ratio of methanol to acrylic acid. In the meanwhile, the kinetics of the esterification of acrylic acid with methanol was established on the basis of ideal and non-ideal state of Pseudo-Homogeneous(PH) and Langmuir-Hinshelwood(LH), with the identification of relevant parameters to obtain the equation of reaction rate. By comparison, the LH model, which uses activity instead of concentration, has the lowest multireference single- and doubleexcitation(MRD) of 1.446%, and is therefore best fit for the reaction.

Key words: methyl acrylate, strong-acid cation exchange resin, chemical kinetics, esterification and catalysis

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