The Effect of Cross Interactions on Mixing Properties: Non-Lorentz-Berthelot Lennard-Jones Mixtures

2008 ◽  
Vol 73 (4) ◽  
pp. 533-540 ◽  
Author(s):  
Michael Rouha ◽  
Filip Moučka ◽  
Ivo Nezbeda
Keyword(s):  
Binary Mixtures ◽  
Excess Volume ◽  
Excess Enthalpy ◽  
Excess Volumes ◽  
Excess Function ◽  
Mixing Properties ◽  
Lennard Jones ◽  
Behavior Types

Binary mixtures of two identical Lennard-Jones fluids with non-Lorentz-Berthelot combining rules have been simulated at ambient-like conditions in order to examine the effect of cross interactions on mixing properties - excess volumes and enthalpies. Various combinations of deviations of both energy and size cross parameters from the Lorentz-Berthelot rules have been considered. Whereas consequences of the deviations for excess volume are rather straightforward, a variety of behavior types is found for excess enthalpy, including an excess function with three extrema.

Vapor–Liquid Equilibria, Excess Enthalpy, and Excess Volume of Binary Mixtures Containing an Alcohol (1-Butanol, 2-Butanol, or 2-Methyl-2-butanol) and 2-Ethoxy-2-methylbutane

2012 ◽  
Vol 57 (12) ◽  
pp. 3502-3509 ◽  
Author(s):  
Aarne T. Sundberg ◽  
Helena Laavi ◽  
Younghun Kim ◽  
Petri Uusi-Kyyny ◽  
Juha-Pekka Pokki ◽  
...  
Keyword(s):  
Binary Mixtures ◽  
Excess Volume ◽  
Excess Enthalpy ◽  
Vapor Liquid Equilibria ◽  
Vapor Liquid

Excess Volumes of Mixtures of Alkanols with Aromatic Hydrocarbons

1993 ◽  
Vol 58 (11) ◽  
pp. 2612-2624 ◽  
Author(s):  
Petr Munk ◽  
Anwei Qin ◽  
Dolly E. Hoffman
Keyword(s):  
Aromatic Hydrocarbon ◽  
Benzene Ring ◽  
Binary Mixtures ◽  
Aromatic Hydrocarbons ◽  
Excess Volume ◽  
Excess Volumes ◽  
Compositional Dependence ◽  
Benzene Toluene

The excess volumes of twenty binary mixtures of four aromatic hydrocarbons (benzene, toluene, ethylbenzene, and p-xylene) and five linear alkanols (methanol, ethanol, 1-propanol, 1-butanol, and 1-pentanol) at 20 °C are reported. The excess volume of systems with the same alkanol increases with increasing size and number of substituents on the benzene ring. For systems with the same aromatic hydrocarbon it increases with the length of the alkanols. The dependence of ∆V/φ1ϑ2 values on composition is noticeably asymmetric. Systems with benzene as one of the component show larger ∆V/φ1ϑ2 values than other systems and systems with methanol show different compositional dependence patterns.

scholarly journals Excess volumes for binary liquid mixtures of 1-chlorobutane with normal alkanes

1980 ◽  
Vol 33 (11) ◽  
pp. 2543 ◽  
Author(s):  
A Krishnaiah ◽  
DN Rao ◽  
PR Naidu
Keyword(s):  
Chain Length ◽  
Binary Mixtures ◽  
Entire Range ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Excess Volumes ◽  
Excess Function ◽  
Normal Alkanes ◽  
Binary Liquid

Excess volumes for binary mixtures of 1-chlorobutane with hexane, heptane, octane and nonane were measured dilatometrically at 303.15 K. Excess volumes are positive over the entire range of composition in the four mixtures. Further, it is observed that increase in chain length increases the magnitude of the excess function.

Pycnometric determination of densities and excess volumes of binary mixtures containing at least one associating component

1990 ◽  
Vol 55 (10) ◽  
pp. 2395-2403 ◽  
Author(s):  
Kamila Chýlková ◽  
Ivona Malijevská
Keyword(s):  
Acetic Acid ◽  
Propionic Acid ◽  
Binary Mixtures ◽  
Trifluoroacetic Acid ◽  
Excess Volume ◽  
Excess Volumes ◽  
Molar Excess ◽  
Molar Excess Volumes

Densities at 20 °C and molar excess volumes calculated from them are reported in the work for the mixtures of the substances: propionic acid-n-heptane, propionic acid-benzene, trifluoroacetic acid-benzene, propionic acid-cyclohexane, acetic acid-cyclohexane, acetic acid-trifluoroacetic acid, acetic acid-propionic acid, and propionic acid-trifluoroacetic acid. For the last system mentioned, a strange dependence of excess volume on composition was found which is noted for three local extremes. The dependences of excess volume on composition are correlated by the Redlich-Kister polynomial.

Excess volumes of toluene mixtures with some alcohols at 303.15 K

1980 ◽  
Vol 58 (3) ◽  
pp. 229-230 ◽  
Author(s):  
Goolla Narayana Swamy ◽  
Golla Dharmaraju ◽  
Gurajala Kodanda Raman
Keyword(s):  
Binary Mixtures ◽  
Excess Volume ◽  
Composition Range ◽  
Excess Volumes ◽  
Entire Composition Range ◽  
Dilatometric Method

Excess volumes for binary mixtures of toluene with 1-propanol, 2-propanol, 1-butanol, 2-methyl-1-propanol, 1-pentanol, 1-hexanol, 1-heptanol, and cyclohexanol have been measured as a function of composition at 303.15 K by a dilatometric method. The excess volume curves for 1-propanol and 1-butanol are sigmoid. For other alcohols VE values are positive over the entire composition range.

Excess volumes of binary mixtures of an alcohol + diethylketone

1976 ◽  
Vol 54 (16) ◽  
pp. 2676-2677 ◽  
Author(s):  
Kalluru S. Reddy ◽  
Murari Venkata P. Rao ◽  
Puligundla R. Naidu
Keyword(s):  
Binary Mixtures ◽  
Excess Volumes

Excess volumes of mixtures of 1-propanol +, 1-butanol +, 1-pentanol +, and 1-hexanol + diethylketone have been measured at 303.15 and 313.15 K. Of the four mixtures included here 1-propanol + diethylketone shows an inversion in sign in VE at 313.15 K. VE becomes more positive with increase in temperature.

Excess volumes of the binary mixtures of cyclohexane with isomers of hexanol at 25�C

1986 ◽  
Vol 15 (5) ◽  
pp. 433-438 ◽  
Author(s):  
J. Ortega ◽  
M. I. Paz-Andrade ◽  
E. Rodriguez-N��ez ◽  
F. Sarmiento
Keyword(s):  
Binary Mixtures ◽  
Excess Volumes
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