Viscosities of binary mixtures of some n-ethoxyethanols with ethyl tert-butyl ether at T = (293.15, 298.15, and 303.15) K

https://doi.org/10.1016/j.jct.2007.01.010Get rights and content

Abstract

Viscosities at T = (293.15, 298.15, and 303.15) K in the binary mixtures of ethyl tert-butyl ether with 2-ethoxyethanol, 2-(2-ethoxyethoxy)ethanol, and 2-[2-(2-ethoxyethoxy)ethoxy]ethanol have been measured over the entire range of mixture compositions. From the experimental data, deviations in the viscosity (Δln η) and excess energies of activation for viscous flowG∗E) have been calculated. The viscosity data were correlated with equations of Hind et al., Grunberg and Nissan, Auslaender, and McAllister. The results for Δln η and ΔG∗E are discussed in terms of intermolecular interactions and structure of studied binary mixtures.

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:lnη=j=04βj·x1j,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)

  • A.S. Al-Jimaz et al.

    Fluid Phase Equilibr.

    (2004)
  • C.M. Kinart et al.

    J. Therm. Anal. Catal.

    (2006)
  • A. Pal et al.

    J. Chem. Eng. Data

    (1998)
  • T.M. Aminabhavi et al.

    J. Chem. Eng. Data

    (1995)
  • J. Riddick et al.

    Organic Solvents, Physical Properties and Method Purification. Techniques of Chemistry

    (1986)
  • E.T. Fogg et al.

    Anal. Chem.

    (1955)
  • G.A. Ratcliff et al.

    Can. J. Chem. Eng.

    (1971)
  • R.S. Ramadevi et al.

    J. Chem. Eng. Data

    (1996)
  • A. Pal

    J. Chem. Eng. Data

    (2002)
  • O. Redlich et al.

    Ind. Eng. Chem.

    (1948)
There are more references available in the full text version of this article.

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 Liquids
    Citation 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.

  • Densities, 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 Science
    Citation 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 Thermodynamics
    Citation 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].

View all citing articles on Scopus
View full text