Industrial & Engineering Chemistry Research, Vol.40, No.2, 689-695, 2001
Vapor-liquid equilibria and excess properties of cyclohexane-1,1-dimethylpropyl methyl ether (TAME) mixtures
Vapor-liquid equilibrium (VLE) data are reported for the binary mixtures formed by cyclohexane and the branched ether 1,1-dimethylpropyl methyl ether (tert-amyl methyl ether or TAME). A Gibbs-Van Ness type apparatus was used to obtain total vapor pressure measurements for cyclohexane-TAME mixtures as a function of composition at 298.15, 308.15, 318.15, and 328.15 K. These data are analyzed together with isothermal VLE data previously obtained at 313.15 K and excess enthalpies and volumes previously determined at 298.15 K for these mixtures. The Peng-Robinson equation of state and the Wong-Sandler mixing rule, the lattice-fluid (LF) model, the Flory theory, the UNIQUAC model, and the modified UNIFAC (Dortmund) model are used to correlate or predict the VLE data and excess properties of cyclohexane-TAME mixtures.