Study on the effect of increasing the chain length of the alkanol in excess molar enthalpies of mixtures containing 2-methoxy-2-methylpropane, 1-alkanol, decane
Fluid Phase Equilibria(2010)
Abstract
Excess molar enthalpies for the ternary system {x1 2-methoxy-2-methylpropane+x2 ethanol+(1−x1−x2) decane} and the involved binary mixture {x ethanol+(1−x) decane} have been measured at the temperature of 298.15K and atmospheric pressure, over the whole composition range. No experimental excess enthalpy values were found in the currently available literature for the ternary mixture under study. The results were fitted by means of different variable-degree polynomials. Smooth representations of the results are presented and used to construct constant excess molar enthalpy contours on Roozeboom diagrams. The excess molar enthalpies for the binary and ternary system are positive over the whole range of composition. The binary mixture {x ethanol+(1−x) decane} is asymmetric, with its maximum displace toward a high mole fraction of decane. The ternary contribution is also positive, and the representation is asymmetric.
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Key words
Excess molar enthalpies,Ternary mixtures,Binary mixtures,2-Methoxy-2-methylpropane,Ethanol,Decane
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