Representation and Validation of Liquid Densities for Pure Compounds and Mixtures

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• 作者：Vladimir Diky ; John P. O鈥機onnell ; Jens Abildskov ; Kenneth Kroenlein ; Michael Frenkel
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2015
• 出版时间：December 10, 2015
• 年：2015
• 卷：60
• 期：12
• 页码：3545-3553
• 全文大小：696K
• ISSN：1520-5134

文摘

Reliable correlation and prediction of liquid densities are important for designing chemical processes at normal and elevated pressures. A corresponding-states model from molecular theory was extended to yield a robust method for quality testing of experimental data that also provides predicted values at unmeasured conditions. The model has been shown to successfully represent and validate the pressure and temperature dependence of liquid densities greater than 1.5 of the critical density for pure compounds, binary mixtures, and ternary mixtures from the triple to critical temperatures at pressures up to 10⁶ kPa. The systems include the full range of organic compounds, including complex solutions, and ionic liquids. Minimal data are required for making predictions.