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<p>This study investigates the catalytic behavior of polyethylene glycol (PEG)-400 and its equimolar mixtures with dimethyl sulfoxide (DMSO), water, and ethanol across binary, ternary, and quaternary systems in the temperature range of 288.15&#xa0;K to 333.15&#xa0;K. The density (<i>d</i>) and refractive index (<i>n</i><sub>D</sub>) of the systems were measured, and their temperature dependence was analyzed using linear regression. Physicochemical properties, including the coefficient of volume expansion (<i>α</i>), isothermal compressibility (<i>K</i><sub>T</sub>), atomic polarizability (<i>P</i><sub>ε</sub>), energy of vaporization (Δ<i>E</i><sub>V</sub>), heat of vaporization (Δ<i>H</i><sub>V</sub>), cohesive energy density (<i>ced</i>), and solubility (<i>δ</i>), were computed to understand their catalytic behavior. In comparison to binary and quaternary systems, the ternary mixture (PEG-400 + DMSO + Water) demonstrated superior catalytic performance, as attributed by its optimized physicochemical properties and a higher intensity with red-shifted UV absorbance peaks. These findings suggest that ternary mixtures offer enhanced solvent capabilities for catalytic applications, providing valuable insights into chemical and industrial processes. Additionally, the linear regression model was employed to obtain the <i>d</i>-<i>T</i> and <i>n</i><sub>D</sub> -<i>T</i> correlations.</p>

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Study of the Catalytic Behavior of Polyethylene Glycol (PEG)-400 Mixtures at Equimolar Concentrations in the Temperature Range 288.15 K to 333.15 K

  • 期刊论文

  • 发表日期：

    2025年11月29日

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  • Amisha Rana,
  • Arun Upmanyu,
  • Monika Dhiman,
  • Kuljeet Singh,
  • Kailash Chandra Juglan

摘要

This study investigates the catalytic behavior of polyethylene glycol (PEG)-400 and its equimolar mixtures with dimethyl sulfoxide (DMSO), water, and ethanol across binary, ternary, and quaternary systems in the temperature range of 288.15 K to 333.15 K. The density (d) and refractive index (nD) of the systems were measured, and their temperature dependence was analyzed using linear regression. Physicochemical properties, including the coefficient of volume expansion (α), isothermal compressibility (KT), atomic polarizability (Pε), energy of vaporization (ΔEV), heat of vaporization (ΔHV), cohesive energy density (ced), and solubility (δ), were computed to understand their catalytic behavior. In comparison to binary and quaternary systems, the ternary mixture (PEG-400 + DMSO + Water) demonstrated superior catalytic performance, as attributed by its optimized physicochemical properties and a higher intensity with red-shifted UV absorbance peaks. These findings suggest that ternary mixtures offer enhanced solvent capabilities for catalytic applications, providing valuable insights into chemical and industrial processes. Additionally, the linear regression model was employed to obtain the d-T and nD -T correlations.