scholarly journals Thermo Physical Properties for Binary Mixture of Dimethylsulfoxide and Isopropylbenzene at Various Temperatures

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Maninder Kumar ◽  
V. K. Rattan
Keyword(s):  
Refractive Index ◽  
Binary Mixture ◽  
Speed Of Sound ◽  
Excess Molar Volume ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Isentropic Compressibility ◽  
Experimental Measurements ◽  
Kister Equation ◽  
Thermo Physical Properties

Density, refractive index, speed of sound, and viscosity have been measured of binary mixture dimethylsulfoxide (DMSO) + isopropylbenzene (CUMENE) over the whole composition range at 298.15, 303.15, 308.15, and 313.15 K and atmospheric pressure. From these experimental measurements the excess molar volume, deviations in viscosity, molar refractivity, speed of sound, and isentropic compressibility have been calculated. These deviations have been correlated by a polynomial Redlich-Kister equation to derive the coefficients and standard error. The viscosities have furthermore been correlated with two or three parameter models, that is, herric correlation and McAllister model, respectively.

scholarly journals Thermophysical Properties of Binary Mixtures of Dimethylsulfoxide with 1-Phenylethanone and 1,4-Dimethylbenzene at Various Temperatures

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Harmandeep Singh Gill ◽  
V. K. Rattan
Keyword(s):  
Binary Mixtures ◽  
Speed Of Sound ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Excess Molar Volumes ◽  
Isentropic Compressibility ◽  
Molar Refraction ◽  
Viscosity Deviations ◽  
Research Article ◽  
Kister Equation

This research article reports the experimental results of the density, viscosity, refractive index, and speed of sound analysis of binary mixtures of dimethylsulfoxide (DMSO) + 1-phenylethanone (acetophenone) and + 1,4-dimethylbenzene (para-xylene) over the whole composition range at 313.15, 318.15, 323.15, and 328.15 K and at atmospheric pressure. The excess molar volumes (VE), viscosity deviations (Δη), excess Gibbs energy of activation (GE), deviations in isentropic compressibility (KSE), deviations in speed of sound (uE), and deviations in the molar refraction (ΔR) were calculated from the experimental data. The computed quantities were fitted to the Redlich-Kister equation to derive the coefficients and estimate the standard error values. The viscosities have also been correlated with two, and three-parameter models, that is, Heric correlation, McAllister model, and Grunberg-Nissan correlation, respectively.

scholarly journals Densities and viscosities for binary mixtures of n-heptane with alcohols at different temperatures

2017 ◽  
Vol 82 (7-8) ◽  
pp. 891-903 ◽  
Author(s):  
Maria Budeanu ◽  
Vasile Dumitrescu
Keyword(s):  
Molar Volume ◽  
Excess Molar Volume ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Composition Range ◽  
Excess Functions ◽  
Experimental Measurements ◽  
Different Temperatures ◽  
The One ◽  
Kister Equation

Densities (?) and viscosities (?) of the binary systems n-heptane with alcohols (ethanol, propan-1-ol and propan-2-ol) were measured at temperatures between 288.15 and 308.15 K and at atmospheric pressure, over the whole composition range. The excess values of molar volume (VE) and viscosity (?E) were calculated from experimental measurements. The excess functions of the binary systems were fitted to Redlich?Kister Equation. Comparison between experimental excess molar volume and the one calculated from Flory and Prigogine?Flory?Patterson theories, has also been done. The viscosity results were fitted to the equations of Grunberg?Nissan, Heric?Brewer, Jouyban?Acree and McAllister. Also, the activation energies of viscous flow have been obtained and their variations with compositions have been discussed.

scholarly journals Analysis of thermophysical properties of binary systems containing ethyl acetate and 1-propanol or 1-butanol

2020 ◽  
Vol 74 (3) ◽  
pp. 163-185
Author(s):  
Divna Majstorovic ◽  
Marija Mirkovic ◽  
Mirjana Kijevcanin ◽  
Emila Zivkovic
Keyword(s):  
Refractive Index ◽  
Ethyl Acetate ◽  
Binary Systems ◽  
Calculated Data ◽  
Excess Molar Volumes ◽  
Isentropic Compressibility ◽  
Experimental Measurements ◽  
Viscosity Deviations ◽  
Kister Equation ◽  
Refractive Index Deviations

The aim of this research is the experimental determination of density, viscosity, refractive index and speed of sound for binary mixtures of the ester ethyl acetate and alcohols. Experimental measurements were carried out for two systems with 1-propanol and 1-butanol at atmospheric pressure and in a temperature range 288.15 - 323.15 K. Results of experimental measurements were further used to determine excess molar volumes, viscosity deviations, refractive index deviations, and excess isentropic compressibility for each investigated mixture. These calculated data were correlated using the empirical Redlich-Kister equation. Positive values of the excess molar volume and isentropic compressibility appear for both analysed systems, while values of viscosity and refractive index deviations are negative. The structure and specific characteristics of different molecules in considered mixtures and determined non-ideal behaviour allow the insight into the possible type of interactions in the mixture, interstitial accommodation and structural effects.

Density, Refractive Index, and Speed of Sound of the Binary Mixture of 1-Butyl-3-methylimidazolium Tetrafluoroborate + N-Vinyl-2-pyrrolidinone from T = (298.15 to 323.15) K at Atmospheric Pressure

2015 ◽  
Vol 60 (3) ◽  
pp. 886-894 ◽  
Author(s):  
Govardhana Rao Sunkara ◽  
Madhu Mohan Tadavarthi ◽  
Vijaya Krishna Tadekoru ◽  
Srinivasa Krishna Tadikonda ◽  
Subba Rao Bezawada
Keyword(s):  
Refractive Index ◽  
Binary Mixture ◽  
Speed Of Sound ◽  
Atmospheric Pressure

Densities, Viscosities and Excess Properties of Binary Mixtures of 2-Methoxy-2-methylpropane with iso-Propanol

2018 ◽  
Vol 69 (6) ◽  
pp. 1298-1302
Author(s):  
Maria Magdalena Budeanu ◽  
Vasile Dumitrescu ◽  
Simona Radu ◽  
Alexandru Camenita
Keyword(s):  
Gibbs Energy ◽  
Linear Equation ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Composition Range ◽  
Molar Gibbs Energy ◽  
Excess Properties ◽  
Excess Functions ◽  
Experimental Measurements ◽  
Kister Equation

Densities (r) and viscosities (h) of the binary systems 2-Methoxy-2-methylpropane with iso-propanol were measured at temperatures (288.15, 293.15, 298.15, 303.15 and 308.15) K and atmospheric pressure, over the whole composition range. The density and viscosity of the solutions were correlated with the temperature with a linear equation, respectively with Guzman�s equation. The excess values of molar volume (VE), viscosity (hE) and molar Gibbs energy (DG*E) were calculated from experimental measurements. The excess functions of the binary systems were fitted to Redlich-Kister equation. Viscosity results were fitted to the equations of Grunberg-Nissan, Heric-Brewer, Jouyban-Acree and McAllister.

scholarly journals Excess molar volume of the acetonitrile + alcohol systems at 298.15K. Part I: Density measurements for acetonitrile + methanol, + ethanol systems

2002 ◽  
Vol 67 (8-9) ◽  
pp. 581-586 ◽  
Author(s):  
Ivona Grguric ◽  
Aleksandar Tasic ◽  
Bojan Djordjevic ◽  
Mirjana Kijevcanin ◽  
Slobodan Serbanovic
Keyword(s):  
Molar Volume ◽  
Excess Molar Volume ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Entire Composition Range ◽  
Density Measurements ◽  
Binary Liquid ◽  
Liquid Systems ◽  
Vibrating Tube Densimeter ◽  
Kister Equation

The excess molar volume VE of the binary liquid systems acetonitrile methanol and acetonitrile + ethanol has been evaluated from density measurements at 298.15K and at atmospheric pressure over the entire composition range. A vibrating tube densimeter, type Anton Paar DMA 55, was applied for these measurements. The Redlich?Kister equation was used to fit the experimental VE data.

scholarly journals Density, speed of sound, refractive index and activity coefficients at infinite dilution for ionic liquids

2018 ◽  
Author(s):  
◽  
Ncomeka Mgxadeni
Keyword(s):  
Refractive Index ◽  
Ionic Liquid ◽  
Molar Volume ◽  
Activity Coefficients ◽  
Speed Of Sound ◽  
Excess Molar Volume ◽  
Infinite Dilution ◽  
Isentropic Compressibility ◽  
Hydrogen Sulfate ◽  
Experimental Density

In this study the experimental density, speed of sound, and refractive index for binary mixtures of an ionic liquid (IL): 1-butyl-3-methylimidazolium nitrate and activity coefficients at infinite dilution of organic solutes in the ionic liquid: 1-butyl-3-methylimidazolium hydrogen sulfate were determined. The density, speed of sound, and refractive index of 1-butyl-3-methylimidazolium nitrate in pyridine or acetonitrile or thiophene have been reported at T = 298.15 K, 303.15 K, 308.15 K, 313.15 K and 318.15 K using an Anton Paar DSA 5000M vibrating U-tube densimeter and a RXA 156 refractometer. The derived properties namely: excess molar volume, isentropic compressibility and change in refractive index were calculated from density, speed of sound and refractive index, respectively. The results are discussed in terms of molecular interactions (hydrogen bond, dipole-dipole, or ion-solvent or interactions). The negative deviation of excess molar volume and the positive deviation in change in refractive index clearly indicates the strong interaction of 1-butyl-3-methylimidazolium nitrate with pyridine or acetonitrile or thiophene in solution. The positive values of isentropic compressibility for the system indicates that the mixtures were more compressible than the ideal mixture. The Redlich Kister smoothing polynomial was used to fit the excess molar volume and deviation in isentropic compressibility data. The Lorentz-Lorenz equation was used to predict the experimental density, or refractive index data and to correlate the excess molar volume. Gas liquid chromatography was used to determine activity coefficients at infinite dilution for 28 polar and non-polar organic solute: alkanes, cycloalkanes, alkenes, alkynes, aromatic hydrocarbons, alcohols, aldehydes, thiophene, pyridine and acetonitrile in an IL: 1-butyl-3- methylimidazolium hydrogen sulfate ([BMIM][HSO4]). The measured values of activity coefficients at infinite dilution for the solutes in [BMIM][HSO4] were carried out at T = (313.15, 323.15, 333.15) K. Partial molar excess enthalpies at infinite dilution of the organic solutes in the ionic liquid have been calculated from the temperature dependence of activity coefficients at infinite dilution. The selectivity and capacity values for separation problems namely: hexane/benzene, heptane/benzene, cyclohexane/benzene, ethanol/benzene, heptane/pyridine, heptane/thiophene and methanol/acetone at T = 323.15 K were calculated and compared to literature values for similar ionic liquids, sulfolane and N-methyl-2- pyrolidinone (NMP). The IL [BMIM][HSO4] gave both the highest selectivity and limiting capacity for the heptane/thiophene separation and would therefore be a suitable entrainer for this separation. New data from this study reveals that [BMIM][HSO4] may be proposed as a replacement solvent for the separation of sulphur or nitrogen compounds from alkanes.

scholarly journals Excess Parameter Studies on Tetrahydropyran with 1-Hexanol at T = 298.15 to 318.15 K Using Anton Paar

2014 ◽  
Vol 36 ◽  
pp. 114-124
Author(s):  
K. Anil Kumar ◽  
Ch. Srinivasu
Keyword(s):  
Binary Mixture ◽  
Sound Velocity ◽  
Excess Molar Volume ◽  
Acoustic Impedance ◽  
Entire Range ◽  
Isentropic Compressibility ◽  
Excess Parameters ◽  
Excess Parameter ◽  
Experimental Values ◽  
Kister Equation

Sound velocity, densities of binary mixture of Tetrahydropyran (THP) with 1-hexanol has been measured over the entire range of composition at T = 298.15 to 318.15 K. The excess parameters viz., excess sound velocity, deviations in isentropic compressibility, excess molar volume, excess free length and excess acoustic impedance are deduced from experimental values and discussed intermolecular interactions present in the mixture. At the end all the parameters have been fitted to Redlich-Kister equation and their coefficients are obtained.

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