Solubility Determination and Thermodynamic Modeling of Glutaric Anhydride in Diverse Solvent Systems Consisting of Acetic Acid, Ethanoic Anhydride, and Tetrachloromethane from T = (278.45 to 324.45) K

Abstract

The solid−liquid equilibrium (SLE) of glutaric anhydride in three pure solvents, tetrachloromethane, acetic acid and ethanoic anhydride, and three binary solvents of acetic acid + tetrachloromethane, ethanoic anhydride + (tetrachloromethane/ acetic acid) and a ternary solvent of tetrachloromethane + acetic acid + ethanoic anhydride solvent systems was measured by dynamic method at a temperature range from 278.45 K to 324.45 K under atmospheric pressure. It turns out that the solubility of glutaric anhydride increases with the temperature increasing in all selected solvents. Moreover, it is interesting that the solubility of glutaric anhydride in two binary solvents (acetic acid + tetrachloromethane, ethanoic anhydride + tetrachloromethane) and ternary solvents mixtures (tetrachloromethane + acetic acid + ethanoic anhydride) was affected more by the decrease of mass fraction of tetrachloromethane at a given temperature. The mass fraction of added ethanoic anhydride had a smaller effect on the solubility of glutaric anhydride in the binary solvent of ethanoic anhydride + acetic acid at T = (279.45 to 314.45) K. The experimental data of solubility were correlated by the λh equation, the Apelblat equation, and nonrandom two liquid equation. All equations can be well applied, and the relative average deviation of the Apelblat equation is less than 0.05. In addition, the thermodynamic properties of the mixing processes in all selected solvents were calculated and discussed based on the nonrandom two-liquid model.

Solubility Determination and Correlation for Bis(2-hydroxyethyl) Terephthalate (BHET) in Four Binary Solvents from 283.15 to 323.15 K

“…Apelblat proposed the Apelblat equation in the process of calculating the correlation between temperature and solubility. − The expression of the modified Apelblat model is described as eq where A , B , and C are the parameters in the Apelblat equation, which can be obtained by fitting experimental data; x A is the solubility of the solute component expressed in mole fraction and T is the absolute temperature.…”

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

“…Our team has successfully separated high-purity GA 16 and SA and AA. In addition, Liao et al 15 have studied the solubility of SA and AA in the GA + acetic acid mixture and the GA + cyclohexanone mixture; Li et al 17 have studied the solubility of SA and AA in the GA + acetone or n-butanol mixture; and Wang et al 18 have studied the solubility of SA in the AA + GA + acetone mixture and AA in the SA + GA + acetone mixture. It is found from these literature studies that the presence of a dibasic acid in a pure solvent affects the solubility of another dibasic acid, and therefore a dibasic acid presented in the pure solvent can also be regarded as a solvent.…”

“…Figure 3. Measured mole fraction solubility x values of AA in acetic acid compared with the literature values.•, experimental values; △, literature data from Fan; 24▽, literature data from Suren;23 and ◇ , literature data from Liao 15. …”