TY - JOUR
T1 - Derived thermodynamic properties for the (ethanol + decane) and (carbon dioxide + ethanol + decane) systems at high pressures
AU - Zamora-López, Héctor S.
AU - Galicia-Luna, Luis A.
AU - Elizalde-Solis, Octavio
AU - Hernández-Rosales, Irma P.
AU - Méndez-Lango, Edgar
N1 - Funding Information:
The present work was funded by Instituto Politécnico Nacional and Consejo Nacional de Ciencia y Tecnología . Centro Nacional de Metrología is acknowledged for the reference temperature calibration facilities. Héctor S. Zamora-López specially thanks to the grant provided by “Programa Delfín” in 2011.
PY - 2012/12
Y1 - 2012/12
N2 - Volumetric properties for the binary (ethanol + decane) and ternary (ethanol + decane + carbon dioxide) systems are reported from (313 to 363) K and pressures up to 20 MPa. Compressed liquid densities of both systems were measured in a vibrating tube densimeter at different compositions. Binary mixtures {x1 ethanol + (1-x1) decane} were prepared at x1 = 0.0937, 0.1011, 0.2507, 0.4963, 0.7526, 0.9014. 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 {x1 ethanol + x2 decane + (1-x1-x2) carbon dioxide} x1 = 0.0657, 0.1986, 0.4087, 0.6042, 0.7109. Density results were correlated using an empirical model with five parameters. Deviations between experimental and calculated values agree and are within the experimental uncertainty. Isobaric expansivity, isothermal compressibility, thermal pressure coefficient, and internal pressure have been calculated for both binary and ternary systems using the empirical model.
AB - Volumetric properties for the binary (ethanol + decane) and ternary (ethanol + decane + carbon dioxide) systems are reported from (313 to 363) K and pressures up to 20 MPa. Compressed liquid densities of both systems were measured in a vibrating tube densimeter at different compositions. Binary mixtures {x1 ethanol + (1-x1) decane} were prepared at x1 = 0.0937, 0.1011, 0.2507, 0.4963, 0.7526, 0.9014. 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 {x1 ethanol + x2 decane + (1-x1-x2) carbon dioxide} x1 = 0.0657, 0.1986, 0.4087, 0.6042, 0.7109. Density results were correlated using an empirical model with five parameters. Deviations between experimental and calculated values agree and are within the experimental uncertainty. Isobaric expansivity, isothermal compressibility, thermal pressure coefficient, and internal pressure have been calculated for both binary and ternary systems using the empirical model.
KW - Carbon dioxide
KW - Decane
KW - Density
KW - Ethanol
KW - Vibrating tube densimeter
UR - http://www.scopus.com/inward/record.url?scp=84864129822&partnerID=8YFLogxK
U2 - 10.1016/j.jct.2012.06.012
DO - 10.1016/j.jct.2012.06.012
M3 - Artículo
SN - 0021-9614
VL - 55
SP - 130
EP - 137
JO - The Journal of Chemical Thermodynamics
JF - The Journal of Chemical Thermodynamics
ER -