Non-aqueous ternary mixtures with ‘island’ miscibility gaps

Becker, Friedrich; Richter, P.

doi:10.1016/0378-3812(89)80013-5

Cited by 27 publications

(14 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An example of the real "island" system is the acetic acid-N,N-dimethylformamide-cyclohexene system at T = 291.15 − 296.15 K [33]. In this work it has been described by NRTL model [44] at T = 291.15 K:…”

Section: Real "Island" Systemmentioning

confidence: 99%

See 1 more Smart Citation

TernAPI program for the calculation of ternary phase diagrams with isolated miscibility gaps by the convex hull method

Voskov

Dzuban

Maksimov

2015

Fluid Phase Equilibria

View full text Add to dashboard Cite

Section: Real "Island" Systemmentioning

confidence: 99%

“…Such systems are known among the mixtures of organic liquids (CH 3 COOH-HCON(CH 3 ) 2 -cyclohexene, phenoltetrahydrofurane-water etc.) [33][34][35], fluids (CO 2 -1-dodecanol-dodecanoic acid etc.) [36], hydrogen halogenides based systems (HBr-propionic acid-n-heptane etc.)…”

Section: Systems With Isolated Miscibility Gapsmentioning

confidence: 99%

TernAPI program for the calculation of ternary phase diagrams with isolated miscibility gaps by the convex hull method

Voskov

Dzuban

Maksimov

2015

Fluid Phase Equilibria

View full text Add to dashboard Cite

“…These systems can appear from the simultaneous presence of a hydrocarbon and a weak acid and base, forming a soluble but less miscible salt [23]. They also appear for ternary systems with two polymers and a low molecular weight solvent [24].…”

Section: Condensed Phase Equilibrium Regression Backgroundmentioning

confidence: 99%

GE Models and Algorithms for Condensed Phase Equilibrium Data Regression in Ternary Systems: Limitations and Proposals

Gomis¹

2011

TOTHERJ

View full text Add to dashboard Cite

Phase equilibrium data regression is an unavoidable task necessary to obtain the appropriate values for any model to be used in separation equipment design for chemical process simulation and optimization. The accuracy of this process depends on different factors such as the experimental data quality, the selected model and the calculation algorithm. The present paper summarizes the results and conclusions achieved in our research on the capabilities and limitations of the existing G E models and about strategies that can be included in the correlation algorithms to improve the convergence and avoid inconsistencies. The NRTL model has been selected as a representative local composition model. New capabilities of this model, but also several relevant limitations, have been identified and some examples of the application of a modified NRTL equation have been discussed. Furthermore, a regression algorithm has been developed that allows for the advisable simultaneous regression of all the condensed phase equilibrium regions that are present in ternary systems at constant T and P. It includes specific strategies designed to avoid some of the pitfalls frequently found in commercial regression tools for phase equilibrium calculations. Most of the proposed strategies are based on the geometrical interpretation of the lowest common tangent plane equilibrium criterion, which allows an unambiguous comprehension of the behavior of the mixtures. The paper aims to show all the work as a whole in order to reveal the necessary efforts that must be devoted to overcome the difficulties that still exist in the phase equilibrium data regression problem.

show abstract

“…In contrast to this behaviour, a ternary system showing a poorer solubility compared with the binary border systems (A + B) and (A + C), is called an island system. (7) Cosolvency effects can give rise to a closed homogeneous region, a so-called miscibility window, completely surrounded by heterogeneous states in an isobaric T (w red c ) diagram where w red c is the solvent-free or reduced mass fraction of component C defined by: (8,9) …”

Section: Introductionmentioning

confidence: 99%

Fluid phase equilibria of (carbon dioxide + a 1-alkanol+ an alkane) up to 100 MPa andT=393 K: cosolvency effect, miscibility windows, and holes in the critical surface

Scheidgen

Schneider

2000

The Journal of Chemical Thermodynamics

View full text Add to dashboard Cite

Non-aqueous ternary mixtures with ‘island’ miscibility gaps

Cited by 27 publications

References 6 publications

TernAPI program for the calculation of ternary phase diagrams with isolated miscibility gaps by the convex hull method

TernAPI program for the calculation of ternary phase diagrams with isolated miscibility gaps by the convex hull method

GE Models and Algorithms for Condensed Phase Equilibrium Data Regression in Ternary Systems: Limitations and Proposals

Fluid phase equilibria of (carbon dioxide + a 1-alkanol+ an alkane) up to 100 MPa andT=393 K: cosolvency effect, miscibility windows, and holes in the critical surface

Contact Info

Product

Resources

About