Measurement and Prediction of Vapor–Liquid Equilibria in Ternary Systems Containing an Organic Component, Cyclohexylamine, and Cyclohexanol

Abstract

The isothermal vapor–liquid equilibrium data are presented for three ternary systems: octane + cyclohexylamine + cyclohexanol, cyclohexane + cyclohexylamine + cyclohexanol, and toluene + cyclohexylamine + cyclohexanol. The experimental data were determined by the dynamic method in a modified Röck and Sieg circulation still at two different temperatures and reduced pressures. The experimental results were compared with the predictions from both UNIQUAC and NRTL activity coefficient models and the equation of state proposed by Elliott, Suresh, and Donohue (ESD EOS).

Modified UNIFAC (Dortmund) Parameters for the Interaction between the Amino Group at Cycloaliphatic Hydrocarbon and the Hydroxyl Group

“…In literature, the experimental VLE data of five ternary systems containing CHA and alcohol are available, whereby the alcoholic component is CHOH in all cases: CHA + CHOH + water, CHA + CHOH + cyclohexane, CHA + CHOH + octane, CHA + CHOH + toluene, and CHA + CHOH + aniline . The prediction results for c-CHNH 2 or CHNH 2 are summarized in Table .…”

“…Ternary Systems. In literature, the experimental VLE data of five ternary systems containing CHA and alcohol are available, whereby the alcoholic component is CHOH in all cases: CHA + CHOH + water, 30 CHA + CHOH + cyclohexane, 31 CHA + CHOH + octane, 31 CHA + CHOH + The group interaction parameter of the amino group (CNH 2 ) with the aromatic amino group (ACNH 2 ) is not published, therefore this system cannot be calculated. c The system CHA + CHOH + aniline was excluded for average calculation.…”

“…c The system CHA + CHOH + aniline was excluded for average calculation. toluene, 31 and CHA + CHOH + aniline. 25 The prediction results for c-CHNH 2 or CHNH 2 are summarized in Table 13.…”

“…Figure 6. Isothermal VLE in the ternary system CHA (1) + CHOH (2) + octane (3) at 343.15 K. •−○, experimental liquid−vapor tie-lines 31. Predicted vapor−liquid tie-lines: using c-CHNH 2 (green) or CHNH 2 (red).…”

“…Average of Relative Deviations of Total Pressures and of Absolute Deviations of Vapor Mole Fractions of the Ternary Systems CHA + CHOH + water,30 + cyclohexane,31 + octane,31 and + toluene 31. …”