Vapour–liquid equilibria, azeotropic data, excess enthalpies, activity coefficients at infinite dilution and solid–liquid equilibria for binary alcohol–ketone systems

2008 ◽  
Vol 267 (2) ◽  
pp. 119-126 ◽  
Author(s):  
Rima Abbas ◽  
Jürgen Gmehling
Keyword(s):  
Activity Coefficients ◽  
Infinite Dilution ◽  
Excess Enthalpies ◽  
Solid Liquid

Activity coefficient at infinite dilution of aqueous solutions of nonionic hydrocarbon and fluorocarbon surfactants as well as their ternary mixtures

2015 ◽  
Vol 70 (1) ◽  
Author(s):  
Katarzyna Szymczyka ◽  
Anna Tarabab
Keyword(s):  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Infinite Dilution ◽  
Ternary Mixtures ◽  
Interface Tension ◽  
Surface Tension Data ◽  
Ethylene Glycols ◽  
Solid Liquid Interface ◽  
Triton X ◽  
Solid Liquid

AbstractActivity coefficients at infinite dilution of the aqueous solutions of nonionic hydrocarbon surfactants, p-(1,1,3,3- tetramethylbutyl) phenoxypoly(ethylene glycols), Triton X-100 (TX100) and Triton X-165 (TX165), fluorocarbon surfactants, Zonyl FSN-100 (FSN100) and Zonyl FSO-100 (FSO100) and their ternary mixtures were determined from the Gracia-Fadrique et al. method for non-volatile compounds. The values of activity coefficients were calculated taking into account the surface tension data of the studied systems at 293K and compared to those determined on the basis of the values of the contact angle of solutions on the polytetrafluoroethylene (PTFE) and polymethyl methacrylate (PMMA) surfaces and the solid-liquid interface tension.

Activity coefficients and partial molar excess enthalpies at infinite dilution for four esters in water

2010 ◽  
Vol 295 (2) ◽  
pp. 194-200 ◽  
Author(s):  
Vladimír Dohnal ◽  
Pavel Vrbka ◽  
Karel Řehák ◽  
Alexander Böhme ◽  
Albrecht Paschke
Keyword(s):  
Activity Coefficients ◽  
Infinite Dilution ◽  
Excess Enthalpies ◽  
Molar Excess

Thermodynamics of mixtures containing the CO and OH groups. I. Estimation of the DISQUAC interchange coefficients for 1-alkanol + n-alkanone systems

1997 ◽  
Vol 75 (10) ◽  
pp. 1412-1423 ◽  
Author(s):  
Juan Antonio González
Keyword(s):  
Infinite Dilution ◽  
Detailed Comparison ◽  
Excess Enthalpies ◽  
Oh Groups ◽  
Molar Excess ◽  
Relative Standard ◽  
Wide Range ◽  
Different Temperatures ◽  
Group Contribution Model ◽  
Solid Liquid

1-Alkanol + n-alkanone mixtures are treated in terms of the DISQUAC group contribution model, reporting the interaction parameters for hydroxyl–carbonyl contacts. The quasichemical interchange coefficients are independent of the compounds in the mixture; the dispersive interchange coefficients depend on the intramolecular environment of the hydroxyl and (or) carbonyl groups. Mixtures of a given 1-alkanol with isomeric ketones are characterized by the same first dispersive interaction parameter, which is constant from 2-pentanone. This type of system, when including an alcohol up to 1-pentanol, needs different dispersive enthalpic parameters depending on the symmetry of the ketone. In this case, such parameters are constant from 2-pentanone or 3-pentanone. A detailed comparison is presented between DISQUAC results and data available in the literature on vapour–liquid equilibria, VLE (including azeotropic data), molar Gibbs energies, GE, molar excess enthalpies, HE, solid–liquid equilibria, SLE, natural logarithms of activity coefficients, In [Formula: see text] and partial molar excess enthalpies at infinite dilution,[Formula: see text]. For 54 systems, the mean relative standard deviation in pressure is 0.018; for 61 systems, this magnitude in the case of the HE is 0.059. It is noteworthy that the model yields good predictions over a very wide range of temperature for VLE and SLE. HE is also reasonably well represented at different temperatures. Larger discrepancies are encountered, as usual, for partial molar quantities at infinite dilution. Keywords: liquids, mixtures, thermodynamic properties, group contributions.

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