Gomis Yagües, Vicente, Font, Alicia, Saquete Ferrándiz, María Dolores, Garcia-Cano, Jorge
Isothermal (liquid + liquid) equilibrium data at T = 313.15 K and isobaric (vapor + liquid + liquid) equilibrium data at 101.3 kPa for the ternary system (water + 1-butanol + p-xylene)
The Journal of Chemical Thermodynamics. 2014, 79: 242-247. doi:10.1016/j.jct.2014.07.021
URI: http://hdl.handle.net/10045/44485
DOI: 10.1016/j.jct.2014.07.021
ISSN: 0021-9614 (Print)
Abstract: 
The (vapor + liquid), (liquid + liquid) and (vapor + liquid + liquid) equilibria of the ternary system (water + 1-butanol + p-xylene) have been determined. (Water + 1-butanol + p-xylene) is a type 2 heterogeneous ternary system with partially miscible (water + 1-butanol) and (water + p-xylene) pairs. By contrast, (1-butanol + p-xylene) is totally miscible under atmospheric conditions. This paper examines the (vapor + liquid) equilibrium in both heterogeneous and homogeneous regions at 101.3 kPa of pressure. (Liquid + liquid) equilibrium data at T = 313.15 K have also been determined, and for comparison, the obtained experimental data have been calculated by means of several thermodynamic models: UNIQUAC, UNIFAC and NRTL. Some discrepancies were found between the (vapor + liquid + liquid) correlations; however, the models reproduced the (liquid + liquid) equilibrium data well. The obtained data reveal a ternary heterogeneous azeotrope with mole fraction composition: 0.686 water, 0.146 1-butanol and 0.168 p-xylene.
Keywords:Water, 1-Butanol, p-Xylene, (Liquid + liquid) equilibrium, (Vapor + liquid + liquid) equilibrium, Experimental data
Elsevier
info:eu-repo/semantics/article