| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 216123 | The Journal of Chemical Thermodynamics | 2011 | 7 Pages |
Experimental isobaric (vapor + liquid + liquid) and (vapor + liquid) equilibrium data for the ternary system {water (1) + cyclohexane (2) + heptane (3)} and the quaternary system {water (1) + ethanol (2) + cyclohexane (3) + heptane (4)} were measured at 101.3 kPa. An all-glass, dynamic recirculating still equipped with an ultrasonic homogenizer was used to determine the VLLE. The results obtained show that the system does not present quaternary azeotropes. The point-by-point method by Wisniak for testing the thermodynamic consistency of isobaric measurements was used to test the equilibrium data.
► Water–ethanol–cyclohexane–heptane and water–cyclohexane–heptane isobaric VLLE. ► Isobaric experimental data were determined at 101.3 kPa. ► A dynamic recirculating still with an ultrasonic homogenizer was used. ► The quaternary system does not present quaternary azeotropes.
