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.

Excess properties for acetophenone + butanols at 298.15 K

2001 ◽  
Vol 79 (1) ◽  
pp. 50-53
Author(s):  
Roque Riggio ◽  
Juan F Ramos ◽  
Hector E Martinez
Keyword(s):  
Free Energy ◽  
Molecular Interactions ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Composition Range ◽  
Excess Properties ◽  
Excess Functions ◽  
Experimental Measurements ◽  
Free Energy Of Activation ◽  
Volume Viscosity

Densities, viscosities, and refractive indexes of binary systems acetophenone + n-butanol, + sec-butanol, and + 2-methyl-1-propanol have been measured at 298.15 K and atmospheric pressure, over the whole composition range. The excess values of molar volume, viscosity, Gibbs free energy of activation of viscous flow, and internal pressure were calculated from experimental measurements. Based on the variations of the excess functions with composition, conclusions about the molecular interactions in these kinds of mixtures were obtained.Key words: excess properties, binary mixtures, butanols, acetophenone.

Excess properties for cyclohexanone + butanols at 298.15 K

1995 ◽  
Vol 73 (8) ◽  
pp. 1274-1277 ◽  
Author(s):  
Roque Riggio ◽  
Hector E. Martinez ◽  
Norma Z. De Salas ◽  
Miriam D. De Toigo ◽  
Juan F. Ramos
Keyword(s):  
Free Energy ◽  
Molecular Interactions ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Composition Range ◽  
Excess Properties ◽  
Excess Functions ◽  
Experimental Measurements ◽  
Free Energy Of Activation ◽  
Volume Viscosity

Densities, viscosities, and refractive indexes of the binary systems cyclohexanone + n-butanol, + sec-butanol, and + 2-methyl-1-propanol have been measured at 298.15 K and atmospheric pressure, over the whole composition range. The excess values of molar volume, viscosity, Gibbs free energy of activation of viscous flow, and internal pressure were calculated from experimental measurements. Based on the variations of the excess functions with composition, conclusions about the molecular interactions in these kinds of mixtures were obtained. Keywords: excess properties, binary mixtures, butanols, cyclohexanone.

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 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 Densities, Viscosities and Excess Properties for Dimethyl Sulfoxide with Diethylene Glycol and Methyldiethanolamine at Different Temperatures

2021 ◽  
Vol 12 (1) ◽  
pp. 116
Author(s):  
Maria Magdalena Budeanu ◽  
Vasile Dumitrescu
Keyword(s):  
Molar Volume ◽  
Diethylene Glycol ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Partial Molar Volumes ◽  
Excess Properties ◽  
Excess Functions ◽  
Viscosity Deviation ◽  
Different Temperatures ◽  
Experimental Density

Densities and viscosities of the binary systems dimethylsulfoxide with diethylene glycol and methyldiethanolamine were measured at temperatures ranging from 293.15 to 313.15 K, at atmospheric pressure and over the entire composition range. The experimental density data was correlated as a function of composition using Belda’s and Herraez’s equations, and as a function of temperature and composition using the models of Emmerling et al. and Gonzalez-Olmos-Iglesias. The viscosity results were fitted to the Grunberg-Nissan, Heric-Brewer, Wilson, Noda, and Ishida and Eyring-NRTL equations. The values of viscosity deviation (), excess molar volume (VE), partial molar volumes ( and ) and apparent molar volume ( and ) were determined. The excess functions of the binary systems were fitted to the polynomial equations. The values of thermodynamic functions of activation of viscous flow were calculated and discussed.

scholarly journals Densities, viscosities, and refractive indexes of tert-butyl methyl ether + butyl alcohols at 298.15 K

1995 ◽  
Vol 73 (3) ◽  
pp. 431-434 ◽  
Author(s):  
Roque Riggio ◽  
Hector E. Martinez ◽  
Norma Z. de Salas ◽  
Juan F. Ramos
Keyword(s):  
Free Energy ◽  
Molar Volume ◽  
Methyl Ether ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Composition Range ◽  
Excess Properties ◽  
Tert Butyl ◽  
Volume Viscosity ◽  
Butyl Methyl Ether

Densities, viscosities, and refractive indexes of three binary systems, tert-butyl methyl ether +n-butanol, +sec-butanol, +isobutanol, have been determined at 298.15 K and atmospheric pressure over the complete composition range. We also report calculated excess properties including molar volume, viscosity, and Gibbs free energy for the activation of flow for these systems. Keywords: binary systems, excess properties.

scholarly journals Vapor pressure, density, viscosity and refractive index of dimethyl sulfoxide + 1,4-dimethylbenzene system

2008 ◽  
Vol 73 (1) ◽  
pp. 73-85 ◽  
Author(s):  
Oana Ciocirlan ◽  
Olga Iulian
Keyword(s):  
Dimethyl Sulfoxide ◽  
Excess Molar Volumes ◽  
Excess Properties ◽  
Refractive Indices ◽  
Excess Functions ◽  
Liquid Equilibrium ◽  
Viscosity Deviations ◽  
Unifac Model ◽  
Equilibrium Data ◽  
Kister Equation

This paper reports the experimental results of isothermal vapor-liquid equilibrium data between 303.15 and 333.15 K, and densities, viscosities, refractive indices from 298.15 to 323.15 K of the dimethyl sulfoxide + 1,4-dime?thylbenzene system over the entire range of mixture composition. The obtained PTX data were correlated by the Wilson and NRTL models and estimated by the UNIFAC model. The excess Gibbs energy and activity coefficients were calculated and compared with others excess properties. Excess molar volumes, viscosity deviations and deviations in refractivity were calculated from the experimental data; all the computed quantities were fitted to the Redlich-Kister equation. The resulting excess functions were interpreted in terms of structure and interactions.

scholarly journals Molar Interactions of Some Aromatic Hydrocarbons in n-Heptane by Viscometric Measurements at 298.15K

2018 ◽  
Vol 40 (1) ◽  
pp. 97-110
Author(s):  
Md Kamrul Hossain ◽  
M Abdur Rahaman ◽  
Shamim Akhtar
Keyword(s):  
Free Energy ◽  
Aromatic Hydrocarbons ◽  
Binary Systems ◽  
Composition Range ◽  
The Other ◽  
Excess Gibbs Free Energy ◽  
Geometric Fitting ◽  
Free Energy Of Activation ◽  
Three Body ◽  
Kister Equation

The viscosities, η , of pure n-heptane, toluene, o-xylene, mesitylene, and some of their binary mixtures covering the whole composition range have been measured at 298.15K. Deviations in viscosity, ∆η , was calculated using experimental results. The concentration dependencies of η were correlated to polynomial expressions, whereas, ∆η were fitted to the Redlich–Kister equation. Moreover, the values of the excess Gibbs free energy of activation, ∆G#E, of these mixtures were determined. Viscosity measurements of the binary systems were correlated with Grunberg and Nissan the three-body and four-body McAllister expressions. In all systems, ∆η were found to be negative in the whole range of composition with a single lobe having minimum at 0.6 mple fraction of aromatic hydrocarbon. While dispersive forces are suggested to dominate in n-heptane + toluene, for the other two systems  ‘favourable geometric fitting’ overpowers them due to the increasing number of  – CH3 groups in the relevant aromatic hydrocarbons. The Chittagong Univ. J. Sci. 40 : 97-110, 2018

scholarly journals Densities, Viscosities and Refractive Indices of Ternary System Cyclohexane + Cyclohexanol + Cyclohexanone at 293.15, 298.15 and 303.15 K

2019 ◽  
Vol 70 (4) ◽  
pp. 1204-1209
Author(s):  
Maria Magdalena Budeanu ◽  
Vasile Dumitrescu
Keyword(s):  
Refractive Index ◽  
Ternary System ◽  
Linear Equation ◽  
Viscous Flow ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Refractive Indices ◽  
Mixing Rules ◽  
Experimental Values

Densities (r), viscosities (h) and refractive indices (nD) of the ternary system cyclohexane + cyclohexanol + cyclohexanone were measured at 293.15, 298.15 and 298.15 K and atmospheric pressure, over the whole composition range. The experimental values of densities and viscosities were correlated with temperature using a linear equation and Guzman equation respectively. Viscosity results were fitted with Grunberg-Nissan equation and Heric-Brewer equation. Different refractive index mixing rules (Arago-Biot, Dale-Glastone, Newton and Lorentz-Lorenz) were studied for this ternary system. The functions of activation of viscous flow were also calculated and their variations with compositions have been discussed.

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