JUNIPER PUBLISHERS-Recent Advances in Petrochemical Science
Liquid - Liquid Equilibria of Methanol + Toluene + Hexane Ternary System at 278.15, 283.15, 288.15 and 293.15K
Authored by Monica B Gramajo,
Liquid-liquid equilibria of methanol
+ ethylbenzene + methylcyclohexane ternary system at 278.15, 283.15, and
293.15K are reported. The effect of the temperature on liquid-liquid
equilibrium is discussed. All chemicals were quantified by gas chromatography
using a thermal conductivity detector. Experimental data for the ternary system
are compared with values calculated by the NRTL and UNIQUAC equations. It is
found that the UNIQUAC equation fitted to the experimental data is more
accurate than the NRTL model for this ternary system. There are increasing
demands for use oxygenated compounds to produce reformulated gasoline. For this
reason, we are studying the phase equilibrium of systems containing
hydrocarbons and oxygenated compounds. Within the oxygenated compounds, ethers
and alcohols are the most important, and among these, methanol is receiving
much current attention [1-6]. Methanol presents partial miscibility with
aliphatic hydrocarbons, but not with aromatic hydrocarbons. Therefore, it is of
great importance to study systems composed by methanol and representative
hydrocarbon of gasoline, establishing the concentration ranges and the
temperature of hydrocarbons and methanol in which the two-phase region does not
exist.
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