کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
203845 460682 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The isothermal van’t Hoff equation for phase equilibria—A forgotten relation?
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
The isothermal van’t Hoff equation for phase equilibria—A forgotten relation?
چکیده انگلیسی

The extended van’t Hoff equations for dilute mixtures relate the differences of initial slopes of phase boundary curves to the phase transition enthalpy or volume of the solvent. While the isobaric van’t Hoff equation is frequently used in mixture thermodynamics, its isothermal counterpart has received much less attention. We show that the isothermal van’t Hoff equation can be used to interpolate dew point curves in isothermal phase diagrams or to create a model-free consistency test for experimental phase equilibrium data. Furthermore, an expression for the initial curvature of phase boundary curves is derived.

Figure optionsDownload as PowerPoint slideHighlights
► Model-free estimation of K factors at infinite dilution.
► Useful for interpolation of phase boundary curves.
► Simple consistency test for isothermal phase diagrams.
► Special behaviour of phase boundary curves for limiting azeotropy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 336, 25 December 2012, Pages 22–27
نویسندگان
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