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<p>The density and speed of sound of binary liquid mixtures of benzyl amine and isomeric pentanol (2-methyl-1-butanol, 3-methyl-1-butanol, and 2-methyl-2-butanol), covering the entire composition of benzyl amine, were measured at temperatures <i>T</i> = (298.15&#xa0;K to 313.15) K with 5&#xa0;K intervals and at atmospheric pressure. Schaff's collision factor theory and Jacobson's free length theory were compared to the measured speed of sound. Using measured data, thermodynamic properties such as excess molar volume, apparent molar volume, partial molar volumes, excess partial molar volumes, isentropic compressibility, and excess molar isentropic compressibility were was calculated. The observed excess molar volume and excess molar isentropic compressibility data were compared to theoretical data obtained using the Redlich–Kister equation. Also, the observed excess molar volume results were compared to those obtained through the Prigogine–Flory–Patterson theory. Using thermodynamic data, predict the formation of intermolecular interactions between benzyl amine and isomeric pentanol. The <sup>1</sup>H-NMR spectroscopy tests were performed to provide additional evidence for the existence of an intermolecular (H-bonding) interaction between benzyl amine and isomeric pentanol.</p>

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Experimental and Theoretical Studies of Binary Liquid Systems Containing Benzylamine with Isomeric Pentanol at Varying Temperatures

  • 期刊论文

  • 发表日期：

    2026年5月24日

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  • Acha Swapna,
  • Balakrishna Matkala,
  • S. Pulla Reddy,
  • Jagadeesh Kumar Ega,
  • Ganesh Babu Bathula,
  • A. Samba Shiva Rao,
  • V. Geeta,
  • Bolloju Satheesh

摘要

The density and speed of sound of binary liquid mixtures of benzyl amine and isomeric pentanol (2-methyl-1-butanol, 3-methyl-1-butanol, and 2-methyl-2-butanol), covering the entire composition of benzyl amine, were measured at temperatures T = (298.15 K to 313.15) K with 5 K intervals and at atmospheric pressure. Schaff's collision factor theory and Jacobson's free length theory were compared to the measured speed of sound. Using measured data, thermodynamic properties such as excess molar volume, apparent molar volume, partial molar volumes, excess partial molar volumes, isentropic compressibility, and excess molar isentropic compressibility were was calculated. The observed excess molar volume and excess molar isentropic compressibility data were compared to theoretical data obtained using the Redlich–Kister equation. Also, the observed excess molar volume results were compared to those obtained through the Prigogine–Flory–Patterson theory. Using thermodynamic data, predict the formation of intermolecular interactions between benzyl amine and isomeric pentanol. The 1H-NMR spectroscopy tests were performed to provide additional evidence for the existence of an intermolecular (H-bonding) interaction between benzyl amine and isomeric pentanol.