Viscosities of binary mixtures of some n-ethoxyethanols with ethyl tert-butyl ether at T = (293.15, 298.15, and 303.15) K
Introduction
In a previous paper, the excess molar volumes were determined and the structural properties of (ethoxyethanols + ethyl tert-butyl ether) binary mixtures were presented [1]. The results obtained in this work seem to indicate that the molecules of the binary mixtures studies may be interconnected, by a network of various interactions such as dipolar and/or hydrogen bonds, to form quite stable intermolecular complexes.
In continuation of these structural investigations, the present paper reports the viscosity (η), deviations in viscosity (Δln η) and excess energies of activation for viscous flow (ΔG∗E) for binary mixtures of ethyl tert-butyl ether (ETBE) with 2-ethoxyethanol (EE), 2-(2-ethoxyethoxy)ethanol (DEE), and 2-[2-(2-ethoxyethoxy)ethoxy]ethanol (TEE) over the whole concentration range at T = (293.15, 298.15, and 303.15) K.
Section snippets
Materials
Materials were of the same origin and purity as used in earlier studies [1]. All samples were kept over 4 · 10−10 m molecular sieves to reduce water content and protected against atmospheric moisture and CO2. The liquids were stored in dry-box over phosphorus pentoxide and degassed by ultrasound before performing each experiment. The mixtures were prepared just before use by mass on a Sartorius balance of the type ING1, operating in a dry box to avoid atmospheric moisture. Conversion to molar
Results and discussion
The experimental values of viscosities (η) at T = (293.15, 298.15 and 303.15) K are summarized in TABLE 2, TABLE 3, TABLE 4.
The variation of the dynamic viscosity with binary composition determined using the following equation:for which the coefficients were adjusted to best represent the experimental data at each temperature using a least-squares method. The values of βj coefficients and the standard deviations σ(ln η) are summarized in table 5.
The goodness-of-fit of this procedure
References (21)
- et al.
Fluid Phase Equilibr.
(2004) - et al.
J. Therm. Anal. Catal.
(2006) - et al.
J. Chem. Eng. Data
(1998) - et al.
J. Chem. Eng. Data
(1995) - et al.
Organic Solvents, Physical Properties and Method Purification. Techniques of Chemistry
(1986) - et al.
Anal. Chem.
(1955) - et al.
Can. J. Chem. Eng.
(1971) - et al.
J. Chem. Eng. Data
(1996) J. Chem. Eng. Data
(2002)- et al.
Ind. Eng. Chem.
(1948)
Cited by (10)
Simultaneous prediction of the thermodynamic properties of aqueous solution of ethylene glycol monoethyl ether using artificial neural network
2015, Journal of Molecular LiquidsCitation Excerpt :The thermophysical property data of alkoxyethanols, including thermal expansion coefficient, viscosity, excess molar volume, viscosity deviation and density are very important in industrial process design and engineering applications. Various correlations have been developed to evaluate density and viscosity of EGEE at a different temperature [6–16]. Wang et al. [1] reported new measurements of densities and viscosities for the aqueous solution of EGEE at various compositions and temperature ranges under atmospheric pressure.
Volumetric, viscosimetric and spectroscopic studies for aqueous solution of ethylene glycol monoethyl ether
2014, Journal of Molecular LiquidsDensities, viscosities and refractive indices of binary liquid mixtures of methyl tert-butyl ether or ethyl tert-butyl ether with a hydrocarbon fuel
2013, Experimental Thermal and Fluid ScienceCitation Excerpt :All reagents were degassed by ultrasound before use without further purification. Physical constants of the pure substances obtained are summarized in Table 1 [11–20]. All the binary mixtures were prepared by using a Mettler Toledo AL204 balance with a precision to weigh up of 0.0001 g.
Thermodynamic and physicochemical properties of binary mixtures of nitromethane with {2-methoxyethanol + 2-butoxyethanol} systems at T = (293.15, 298.15, 303.15, 308.15, and 313.15) K
2011, Journal of Chemical ThermodynamicsCitation Excerpt :Therefore, they are necessary for the interpretation of data obtained from thermochemical, electrochemical, biochemical, and kinetic studies. This paper is a part of an ongoing research effort to measure and to characterize the properties of binary mixtures containing 2-alkoxyethanol and aprotic solvent [1–6]. Mixtures containing hydroxyethers are very important from a theoretical point of view, not only because of their self-association, but also due to the strong intramolecular effects produced by the presence of –O– and –OH groups in the same molecule [7–10].
Thermophysical Properties and Molecular Interactions of Fuel Oxygenate Mixture at Different Temperatures via Jouyban-Acree Model
2023, AIP Conference ProceedingsDensity, viscosity, and derivative properties of diethylene glycol monoethyl ether under high pressure and temperature
2021, Journal of Chemical and Engineering Data