Thermophysical Study of Binary Systems of tert-Amyl Methyl Ether with n-Hexane and m-Xylene

Abstract

This work presents the experimentally determined density (ρ), viscosity (η), speed of sound (u), and surface tension (σ) data for tert-amyl methyl ether (TAME) + n-hexane and TAME + m-xylene systems at several temperatures (298.15, 308.15, 318.15, 323.15, and 328.15 K). These experimentally determined thermophysical data are utilized to compute various excess/deviation parameters such as molar volume (V E ), isentropic compressibility (κ s E ), speed of sound (u E ), deviation in viscosity (Δ ln η), isobaric thermal expansion coefficient (α P E ), and surface tension (σ E ). The inspection of parameters response may interpret the existing specific molecular interactions as well as the mixing behavior of solutions. The critical analysis of observed parametric behavior have unveiled the strong and weak molecular interactions in TAME with m-xylene and TAME with n-hexane systems, respectively.

Removal of methyl violet dye by a low‐cost waste (Ajuga Pseudo‐Iva): Kinetic and equilibrium isotherm study

“…In general, n > 1 provided that the sorption is favourable; whereas, n < 1 demonstrates that the sorption process is chemical in nature. [61] In this study, the value found for n is equal to 1.78, which proves that the sorption is favourable and the process is physical in nature. Temkin isotherm Table 3 indicates the presence of low regression coefficient (0.94), demonstrating that the data of equilibrium isotherm of MV onto AP-Iva is poorly described by the Temkin model.…”

Pressure–Surface Tension–Temperature Equation of State for n-Alkanes

“… 10 , 28 Similarly, the knowledge of vapor–liquid equilibrium properties and surface tension of n -alkanes and alcohols is also required to study additives commonly used in fuels. 13 − 15 , 29 , 30 …”

“…10,28 Similarly, the knowledge of vapor−liquid equilibrium properties and surface tension of n-alkanes and alcohols is also required to study additives commonly used in fuels. [13][14][15]29,30 The surface tension of alkanes is also important in removing hydrocarbons from liquid effluents 31,32 and in the study of carbon dioxide capture and storage technologies. 18,33−35 In this last case, high pressures and temperatures are needed, which are not always easily accessible.…”

“…In particular, pure liquid n -alkanes and their mixtures are commonly used in some industrial processes, like those including classical combustibles, biofuels, and solvents, which are of high importance and have temperature dependence on their surface tension. ,− Thus, it is an essential property; for instance, in the study of the injection of surfactants into the extract crude oil . In a few words, as the injection process can be affected by the miscibility process, it is needed to estimate the so-called minimum miscibility pressure.…”

“…Surface tension plays a fundamental role in the injection and atomization of fuels in engines. ,,,− Thus, n -decane is chosen as a surrogate of jet fuels, and its surface tension influences this fuel’s characteristics . In other cases, liquefied natural gas is used as a fuel, and then the values of the surface tension of alkanes at high pressures are needed to characterize it. , Similarly, the knowledge of vapor–liquid equilibrium properties and surface tension of n -alkanes and alcohols is also required to study additives commonly used in fuels. − ,, …”