Excess enthalpies of ternary mixture consisting of tert-butyl methyl ether, ethanol and heptane

A Group Contribution Equation of State for Biorefineries. GCA-EOS Extension to Bioether Fuels and Their Mixtures with n-Alkanes

“…Even though the GCA-EOS correctly predicts the VLE phase behavior of branched ethers, the model shows limitations to simulate part of the excess enthalpy data available for mixtures of branched ether + linear alkanes. − In contrast, the GCA-EOS performs well in the case of binary mixtures comprising i -octane with MTBE and TAME (see Figure ), while it is unable to reproduce the two data sets available for ETBE, which indeed are in disagreement between them.…”

Excess Molar Enthalpies of Ternary and Binary Mixtures Containing 2-Methoxy-2-Methylpropane, Ethanol, and Nonane

“…The excess molar enthalpy H m,123 E of the ternary systems MTBE + ethanol + alkane (hexane, heptane, octane, decane) is also positive over the whole composition diagram, reaching its maximum values at x 1 = 0.3960, x 2 = 0.2490, x 3 = 0.3550, H m,123 E (hexane) = 802 J·mol –1 ; x 1 = 0.3270, x 2 = 0.2510, x 3 = 0.4220, H m,123 E (heptane) = 894 J·mol –1 ; at x 1 = 0.3480, x 2 = 0.2410, x 3 = 0.4110, H m,123 E (octane) = 920 J·mol –1 , x 1 = 0.3530, x 2 = 0.2470, x 3 = 0.4000, H m,123 E = 984 J·mol –1 (decane), respectively. Similar behavior is shown in the experimental data published by Zhu et al for MTBE + ethanol + hexane or octane …”

“…This paper contributes to the series of ternary mixtures reported in earlier works, − where excess molar enthalpies of binary and ternary mixtures containing as components 2-methoxy-2-methylpropane (MTBE), alkanols, and alkanes, used as oxygenating agents in gasoline technology, were studied. All of them are part of the scientific project entitled “Study on Physical Properties of Mixtures Hydrocarbon + Alcohol + Ether Like Alternative Fuels”, whose main objective has been the characterization of nonelectrolyte liquids and their mixtures, through experimental determination of thermophysical properties on mixing.…”

“…Following the above considerations, it is desirable to know the thermodynamic properties of binary and ternary mixtures formed by MTBE, hydrocarbons, and alkanols. Our group has reported thermodynamic properties of various similar mixtures; − the study is now continued considering ethanol as second component and nonane as the third component in the present work. This should help to study the effect of alkane chain length in the binary mixtures involved and subsequent effects on the ternary mixture.…”

Classification of scalar property isoline diagrams of homogeneous ternary mixtures

“…In recent years, the leading scientific publishers have published tens of studies of various properties of ternary mixtures. There have been both systematic studies of groups of proper ties of certain mixtures [1][2][3][4][5][6][7][8][9][10][11][12][13] and studies of their par ticular properties [14][15][16][17][18][19][20][21][22][23][24][25]. In parameter fixing, any of these properties is defined by a single number; that is, they all belong to the family of scalar properties (σ), which include intensive and extensive ones [26].…”