Title of article :
Simultaneous correlation of infinite dilution activity coefficient, vapor–liquid, and liquid–liquid equilibrium data with F-SAC
Author/Authors :
Possani، نويسنده , , L.F.K. and Flôres، نويسنده , , G.B. and Staudt، نويسنده , , P.B. and de P. Soares، نويسنده , , R.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
11
From page :
31
To page :
41
Abstract :
In this work, the recently proposed Functional-Segment Activity Coefficient (F-SAC) model is revised and extended in order to simultaneously represent infinite dilution activity coefficient (IDAC), vapor–liquid (VLE), and liquid–liquid (LLE) equilibrium data. For this investigation, systems involving aromatics, alkanes, cycloalkanes, alkenes and n-Formylmorpholine were selected for the tests. The behavior of these mixtures vary from nearly ideal to partially miscible. A new parameter per group was introduced in order to better represent LLE data in wide temperature ranges. The revised model was calibrated with experimental IDAC and LLE (binary and ternary systems) data. F-SAC correlation results and predictions of VLE experiments were compared with different UNIFAC parametrizations available in the literature. For the systems tested, the proposed approach showed to be more general; there were good IDAC and LLE correlations as well as VLE predictions, all with a single parameter set.
Keywords :
UNIFAC , VLE , LLE , F-SAC
Journal title :
Fluid Phase Equilibria
Serial Year :
2014
Journal title :
Fluid Phase Equilibria
Record number :
1989882
Link To Document :
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