284513 Thermodynamic Derived Properties for Carbon Dioxide - Ethanol - Decane Mixtures At High Pressures

Monday, October 29, 2012
Hall B (Convention Center )
Héctor S. Zamora-López, Laboratorio de Termodinámica - SEPI, Instituto Politécnico Nacional - E.S.I.Q.I.E., Mexico, D. F., Mexico, Luis A. Galicia-Luna, INSTITUTO POLITECNICO NACIONAL-ESIQIE, Mexico, Mexico, Octavio Elizalde-Solis, Departamento de Ingeniería Química Petrolera, INSTITUTO POLITECNICO NACIONAL-ESIQIE, México, D. F., Mexico and Irma P. Hernández-Rosales, Área de Ciencias Básicas e Ingeniería, Universidad Autónoma de Nayarit, Tepic, Nayarit, Mexico

Thermodynamic derived properties (isobaric expansivity, isothermal compressibility, thermal pressure coefficient and internal pressure) are reported in this work for the ternary system carbon dioxide (1) + ethanol (2) + decane (3) at five different compositions in the intervals of (313 – 363) K and (1 – 20) MPa. Compositions for the ternary system were prepared by varying the ethanol / decane relation and trying to keep constant the presence of carbon dioxide at about 0.2 mole fraction. These were {x2 ethanol - x3 decane - (1 - x2 - x3) carbon dioxide} x2 = 0.0657, 0.1986, 0.4087, 0.6042, 0.7109. Derived properties were obtained from an empirical correlation of 5 adjustable parameters based on density data. The experimental apparatus is based on the static – synthetic method coupled to a commercial vibrating tube densitometer from Anton Paar. Experimental densities are reported within an uncertainty of 0.2 kg·m-3; these were obtained from vibrating periods at each temperature and pressure using water and nitrogen as reference fluids.

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