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<p>Errors have been identified in the published equation coefficients reported by Zhang et al. [J Solution Chem (2025). <a href="https://doi.org/10.1007/s10953-025-01525-5">https://doi.org/10.1007/s10953-025-01525-5</a>], which were originally employed to mathematically characterize the solubility of ammonium sulfate in aqueous solutions of caprolactam via three distinct thermodynamic models, i.e. the modified Apelblat equation, the <i>λ</i>h equation and the Van’t Hoff-Yaws model. Notably, the values calculated using these published coefficients for the models do not correspond to the mole fraction solubility values as claimed in the aforementioned study.</p>

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Commentary on the ‘‘Determination and Correlation of the Solubility of Ammonium Sulfate in Aqueous Solutions of Caprolactam with Different Concentrations”

  • 期刊论文

  • 发表日期：

    2026年5月28日

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  • Jili Zheng,
  • Aoxiang Xu,
  • Xianhe Deng,
  • Yajun Li,
  • Jun Zhu,
  • Kui Wu

摘要

Errors have been identified in the published equation coefficients reported by Zhang et al. [J Solution Chem (2025). https://doi.org/10.1007/s10953-025-01525-5], which were originally employed to mathematically characterize the solubility of ammonium sulfate in aqueous solutions of caprolactam via three distinct thermodynamic models, i.e. the modified Apelblat equation, the λh equation and the Van’t Hoff-Yaws model. Notably, the values calculated using these published coefficients for the models do not correspond to the mole fraction solubility values as claimed in the aforementioned study.