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July 26, 2026Physics and Chemistry of Liquids

Thermodynamic and acoustic properties of binary mixtures containing 2-methyl-2-butanol, isopropyl ether and heptane: experimental study and modelling with PC-SAFT and Peng–Robinson equations

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Authors

MBManale El BachtiouiMLMohamed LifiIAIlham Abala

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Overview

Experimental study measures thermodynamic and acoustic properties in binary mixtures, indicating superior modeling by PC-SAFT.

Key Points

  • This study aims to measure the thermodynamic and acoustic properties of selected binary mixtures and compare modeling techniques.
  • Measured densities and speed of sound for three binary mixtures at 298.15 K and 313.15 K and at 0.1 MPa.
  • Calculated excess molar volume, deviation in speed of sound, and isentropic compressibility using Redlich−Kister polynomial.
  • Modeled experimental densities using Peng−Robinson and PC-SAFT equations of state.
  • PC-SAFT model showed excellent agreement with experimental data for all mixtures.
  • Peng–Robinson EoS provided less accurate predictions, especially for mixtures with strong non-ideal behavior.
  • Isentropic compressibility and deviations confirmed the non-ideal nature of the mixtures under study.

Cite This Study

Bachtioui et al. (2026) studied this question.

synapsesocial.com/papers/6a65a825d3aea3239cd7898fhttps://doi.org/10.1080/00319104.2026.2707594
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