Density, Viscosity, and Derivative Properties of Diethylene Glycol Monoethyl Ether Under High Pressure and Temperature

Abstract

The measurement of densities (ρ) of the pure component diethylene glycol monoethyl ether (2-(2-ethoxyethoxy)ethanol) has been carried out using a vibrating-tube densimeter (Anton Paar DMA HPM) along temperatures varying from 293.15 to 353.15 K and pressures from 0.1 to 70 MPa with an expanded uncertainty of 0.5 kg•m −3 . High-pressure dynamic viscosity (η) measurements were performed with a falling body viscometer at pressure values up to 70 MPa and within a temperature range from 293.15 to 353.15 K with an expanded relative uncertainty of 0.03η. The dynamic viscosity was determined at 0.1 MPa, thanks to an Ubbelohde capillary viscometer, with an expanded relative uncertainty smaller than 0.01η. Density experiments were adjusted using a Taitlike equation and modeled by employing the perturbed-chain statistical associating fluid equation of state (EoS). Moreover, high-pressure dynamic viscosity experimental data were correlated using the Vogel−Fulcher−Tammann (VFT) equation.

Thermodynamic Properties of Biodiesel and Petrodiesel Blends at High Pressure and High Temperature and a New Model for Density Prediction

“…21,23,24,30 It is important to emphasize that for using this equation, it is necessary to have a good data correlation, once derivative is directly influenced by it. 32 Even so, Daridon and Bazile 33 proposed the use of the Monte Carlo statistical methodology, using a random perturbation around a Gaussian distribution. This distribution requires two input parameters, i.e., the mean and the standard deviation, which respectively were fixed as the experimental density (ρ Exp ) and the uncertainty of the density distribution (U(ρ)).…”

“…The Tammann–Tait equation has been used in the literature for the calculation of the isothermal compressibility (κ T ). ,,, It is important to emphasize that for using this equation, it is necessary to have a good data correlation, once derivative is directly influenced by it …”

Thermophysical Property Measurements and Modeling of (Ether + Alkanol + Hydrocarbon) Mixtures: Binary and Ternary Mixtures (Dibutyl Ether + 1-Butanol + 1-Hexene or + Iso-octane) at 298.15 K

“…The butanol/biodiesel mix has excellent miscibility at temperatures below −5 °C, a low heat of vaporization, a high cetane number, a high calorific value, and a good igniting capacity . This research builds on our earlier investigations into the thermophysical properties of mixtures including the oxygenated components. − At 298.15 K and 0.1 MPa, the density ρ, speed of sound u , and refractive index, n D are obtained for five binary mixtures: DBE (1) + 1-butanol (2), DBE (1) + 1-hexene (2), DBE (1) + iso-octane, 1-butanol (1) + 1-hexene (2), and 1-butanol (1) + iso-octane (2), as well as for two ternary mixtures: DBE (1) + 1-butanol (2) + 1-hexene (3) and DBE (1) + 1-butanol (2) + iso-octane (3). Furthermore, derivative properties such as Δ u , Δ n D , V E , k s , and Δ k s are determined using the experimental data.…”

Density, Viscosity, Refractive Index, and Related Thermophysical Properties of Dibutyl Ether +2-Butanol + Cyclohexane Ternary Systems

“…Some oxygenated components were added to the gasoline reformulation, such as alcohols, ethers, and glycol ethers, in order to increase the octane rating and lower the toxicity of the contaminants . Our research into the thermophysical characteristics of binary and ternary mixtures containing oxygenated components with alcohols and hydrocarbon components − led to this paper. At 0.1 MPa and 298.15 K, a study of density, dynamic and kinematic viscosities, and refractive index for binary mixtures composed of (i) dibutyl ether (1) + 2-butanol (2), (ii) dibutyl ether (1) + cyclohexane (2), (iii) 2-butanol (1) + cyclohexane (2), and the ternary mixture constituted by dibutyl ether (1) + 2-butanol (2) + cyclohexane (3) is presented in this work.…”