TY - JOUR
T1 - Vapor-liquid equilibria near critical point and critical points for the CO2 + 1-butanol and CO2 + 2-butanol systems at temperatures from 324 to 432 K
AU - Silva-Oliver, Guadalupe
AU - Galicia-Luna, Luis A.
N1 - Funding Information:
The authors are grateful to CONACYT (project 26432-A), IPN for their financial support.
PY - 2001/6/5
Y1 - 2001/6/5
N2 - An apparatus based on the static-analytic method to perform fast determinations of VLE and critical pressures for mixtures up to 60 MPa and 523 K was used. VLE near critical points and critical points of the following mixtures: CO2 + 1-butanol at 324.16, 333.58, 355.38, 392.72, and 426.95 K up to 17 MPa and CO2 + 2-butanol at 335.14, 348.77, 374.10, 402.47, and 431.73 K up to 14.5 MPa were reported over the range of compositions near critical points. The results demonstrated the ability of the apparatus to achieve reliable, VLE near critical points and critical points of fluids mixtures determinations up to 431 K and 17 MPa. The VLE of the CO2 + 1-butanol and CO2 + 2-butanol systems were measured and were represented correctly with the Patel-Teja EOS involving the new mixing rules developed by Galicia-Luna et al. The model could not predict well the phase behavior near critical point of CO2 + 1-butanol system. In the case of the system CO2 + 2-butanol, the Pt-EOS with the new mixing rules predicted well the VLE near critical point at 335-431 K.
AB - An apparatus based on the static-analytic method to perform fast determinations of VLE and critical pressures for mixtures up to 60 MPa and 523 K was used. VLE near critical points and critical points of the following mixtures: CO2 + 1-butanol at 324.16, 333.58, 355.38, 392.72, and 426.95 K up to 17 MPa and CO2 + 2-butanol at 335.14, 348.77, 374.10, 402.47, and 431.73 K up to 14.5 MPa were reported over the range of compositions near critical points. The results demonstrated the ability of the apparatus to achieve reliable, VLE near critical points and critical points of fluids mixtures determinations up to 431 K and 17 MPa. The VLE of the CO2 + 1-butanol and CO2 + 2-butanol systems were measured and were represented correctly with the Patel-Teja EOS involving the new mixing rules developed by Galicia-Luna et al. The model could not predict well the phase behavior near critical point of CO2 + 1-butanol system. In the case of the system CO2 + 2-butanol, the Pt-EOS with the new mixing rules predicted well the VLE near critical point at 335-431 K.
KW - Critical pressures
KW - EoS
KW - Mixing rules
KW - Vapor-liquid equilibria (VLE) apparatus
UR - http://www.scopus.com/inward/record.url?scp=0035810846&partnerID=8YFLogxK
U2 - 10.1016/S0378-3812(01)00388-0
DO - 10.1016/S0378-3812(01)00388-0
M3 - Artículo de la conferencia
SN - 0378-3812
VL - 182
SP - 145
EP - 156
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 1-2
T2 - ICCT 2000 Proceedings of Symposium 6C
Y2 - 6 August 2000 through 11 August 2000
ER -