Solubility and thermodynamic analysis of musk ketone in four binary solvents from T= (273.15 to 313.15) K

摘要

In this work, solubility of musk ketone in four binary solvents (methanol + ethyl acetate, isopropanol + ethyl acetate, n-hexane + ethyl acetate, n-heptane + ethyl acetate) was experimentally studied by employing the isothermal saturationmethod at (273.15 to 313.15) K under 101.3kPa. The results show that the solubility of musk ketone increases with the increase of temperature and the mole fraction of ethyl acetate. Hansen solubility parameter was used to reveal the solubility behavior of musk ketone. The experimental solubility data in binary solvents were correlated by the lambda h equation, modified Apelblat equation, Van't Hoff equation, Jouyban-Acree model, Sun model. The values of RD and RMSD indicated that these models fit the solubility data well in binary solvents. The thermodynamic properties (Delta H-sol degrees,Delta S-sol degrees,Delta(sol)G degrees, %xi(H) and %xi(TS)) were discussed by van't Hoff equation. The results show that the force for the dissolution process was entropy-driven and the dissolution process was endothermic. (C) 2021 Elsevier B.V. All rights reserved.