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

Abstract

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.

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

“…The densities, viscosities and refractive indices of the ternar y mixtures of cyclohexane + cyclohexanol + cyclohexanone are reported in tables 2-4. Densities of the pure components and ternary mixtures were correlated with temperature using the relation [22]: (3) Viscosities of the pure compounds and ternary solutions were correlated with temperature using the equation [22]: (4) where η o and are the adjustable parameters. The adjustable parameters of these equations were estimated using the experimental data and a nonlinear regression analysis employing the Levenberg-Marquardt algorithm [23].…”

“…Density, viscosity and refractive index are the physicochemical properties which provide important information, useful for different problems in chemical engineering in order to develop industrial processes, as well as for database applications and model formulations [2]. The correct values of liquid density are important because they are involved in the equations of heat, mass and momentum transfer [3].…”

Experimental Study and Correlation Models of the Density and Viscosity of 2-Methoxy-2-methylpropane with n-propanol

“…Figure 1 shows [25] are applied to estimate the liquid densities of the binary mixtures at the range 288.15-308.15 K and atmospheric pressure, over the whole concentration range. This models has been previously described [3].…”

“…From a theoretical point of view, mixtures of alcohols and ethers are of interest due to the complex structure, a consequence of the selfassociation of the alcohols, wich is partially destroyed by the active ether molecules, and on the new intermolecular OH-O bonds created [2]. The density of liquids can be determined experimentally, but may be correlated and estimated by different analytical relations [3].…”