Determination and Thermodynamic Modeling of Solid–Liquid Phase Equilibrium for Succinic Acid in the Glutaric Acid + Adipic Acid + Ethyl Acetate Mixture and Adipic Acid in the Succinic Acid + Glutaric Acid + Ethyl Acetate Mixture

• DOI: 10.1021/acs.jced.8b01127
• Publication Date: 2019-03-28T15:45:56Z
• Authors: Yulan Huang; Chunhua Jiang; Jingjing Lu; Honglin Chen; Chunhao Guo; Xunqiu Wang
• Keywords: Adipic acid; Glutaric acid; Succinic acid; Mass fraction

The solid–liquid equilibrium of succinic acid in various mass fractions the glutaric + adipic ethyl acetate mixture and was measured by dynamic method within temperature range 299.12 to 343.56 K under atmospheric pressure. results show that solubility increases with increasing temperature. increase fraction mixed solvent at same Similarly, also solvent. experimental data were correlated Apelblat equation, Wilson nonrandom two-liquid equation. All equations can be well applied, equation has better fitting effect. In addition, thermodynamic properties mixing processes ternary quaternary system calculated based on model, including enthalpy, entropy, Gibbs free energy.