Abstract
Abstract Data on corresponding solid-liquid equilibrium of hyodeoxycholic acid (HDCA) are essential for a preliminary study of industrial applications. In this paper, we focused on solubility and solution thermodynamics of HDCA. By gravimetric method, the solubility of HDCA was measured in ethanol + (acetone, ethyl acetate) binary solvent mixtures from 278.15 K to 328.15 K under atmospheric pressure. The data of equilibrium solubility were then fitted using modified Apelblat equation, a variant of the combined nearly ideal binary solvent/Redich-Kister (CNIBS/R-K) model and Jouyban-Acree model. In addition, the thermodynamic properties of the solution process, including the Gibbs energy, enthalpy, and entropy, were calculated by the van't Hoff analysis.
Original language | English |
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Article number | 4961 |
Pages (from-to) | 268-274 |
Number of pages | 7 |
Journal | Journal of Molecular Liquids |
Volume | 211 |
DOIs | |
State | Published - 25 Jul 2015 |
Keywords
- Apelblat equation
- CNIBS/R-K
- Hyodeoxycholic acid
- Jouyban-Acree model
- van't Hoff analysis