Correlation of Vapor–Liquid Equilibria of Binary Systems Containing Carboxylic Acid by Using Wilson Equation with Parameters Estimated from Pure-Component Properties

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  • Kobuchi Shigetoshi
    Department of Environmental Science and Engineering, Graduate School of Science and Engineering, Yamaguchi University
  • Takakura Kei
    Department of Environmental Science and Engineering, Graduate School of Science and Engineering, Yamaguchi University
  • Yonezawa Setsuko
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University
  • Fukuchi Kenji
    Department of Chemical and Biological Engineering, Ube National College of Technology
  • Arai Yasuhiko
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University

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Abstract

A simple method for estimating the Wilson parameters from pure component properties alone previously proposed has been adopted to predict the vapor–liquid equilibria of binary systems containing carboxylic acids such as acetic acid. Carboxylic acid vapors are characterized by the presence of large amounts of dimers. The binary mixtures of non-associating substance+carboxylic acid and carboxylic acid+carboxylic acid have been studied. The prediction performances obtained are examined and discussed.

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