TY - JOUR
T1 - Compressed liquid densities and excess molar volumes for (CO2 + 1-pentanol) binary system at temperatures from 313 to 363 K and pressures up to 25 MPa
AU - Zúñiga-Moreno, Abel
AU - Galicia-Luna, Luis A.
AU - Sandler, Stanley I.
N1 - Funding Information:
A.Z.M. and L.A.G.L. are grateful to CONACYT and IPN for their financial support.
PY - 2008/2
Y1 - 2008/2
N2 - Measurements of compressed liquid densities for 1-pentanol and for {CO2 (1) + 1-pentanol (2)} system were carried out at temperatures from 313 K to 363 K and pressures up to 25 MPa. Densities were measured for binary mixtures at 10 different compositions, x1 = 0.0816, 0.1347, 0.3624, 0.4651, 0.6054, 0.7274, 0.8067, 0.8573, 0.9216, and 0.9757. A vibrating tube densimeter was used to perform density measurements using two reference calibration fluids. The uncertainty is estimated to be better than ±0.2 kg · m-3 for the experimental density measurements. For each mixture and for 1-pentanol, the experimental densities were correlated using an explicit volume equation of six parameters and an 11-parameter equation of state (EoS). Excess molar volumes were determined for the (CO2 + 1-pentanol) system using 1-pentanol densities calculated from the 11-parameter EoS and CO2 densities calculated from a multiparameter reference EoS.
AB - Measurements of compressed liquid densities for 1-pentanol and for {CO2 (1) + 1-pentanol (2)} system were carried out at temperatures from 313 K to 363 K and pressures up to 25 MPa. Densities were measured for binary mixtures at 10 different compositions, x1 = 0.0816, 0.1347, 0.3624, 0.4651, 0.6054, 0.7274, 0.8067, 0.8573, 0.9216, and 0.9757. A vibrating tube densimeter was used to perform density measurements using two reference calibration fluids. The uncertainty is estimated to be better than ±0.2 kg · m-3 for the experimental density measurements. For each mixture and for 1-pentanol, the experimental densities were correlated using an explicit volume equation of six parameters and an 11-parameter equation of state (EoS). Excess molar volumes were determined for the (CO2 + 1-pentanol) system using 1-pentanol densities calculated from the 11-parameter EoS and CO2 densities calculated from a multiparameter reference EoS.
KW - 1-Pentanol
KW - BWRS EoS
KW - Carbon dioxide
KW - Correlation
KW - Density
KW - Excess molar volumes
KW - Vibrating tube densimeter
UR - http://www.scopus.com/inward/record.url?scp=38349191628&partnerID=8YFLogxK
U2 - 10.1016/j.jct.2007.07.005
DO - 10.1016/j.jct.2007.07.005
M3 - Artículo
SN - 0021-9614
VL - 40
SP - 180
EP - 192
JO - The Journal of Chemical Thermodynamics
JF - The Journal of Chemical Thermodynamics
IS - 2
ER -