TY - JOUR
T1 - Compressed liquid densities and excess volumes of CO2 + thiophene binary mixtures from 313 to 363 K and pressures up to 25 MPa
AU - Zúñiga-Moreno, Abel
AU - Galicia-Luna, Luis A.
AU - Betancourt-Cárdenas, Felix F.
N1 - Funding Information:
The authors thank CONACYT and IPN for their financial support. AZM and FFBC thank to Professors Néstor L. Díaz-Ramírez and José M. Hallen-López for the fellowship received. Special thanks are given to Dr. Andre Blasig for his useful comments.
PY - 2005/9/20
Y1 - 2005/9/20
N2 - Experimental densities for the CO2 (1) + thiophene (2) binary mixtures are reported from 313 to 363 K and up to 25 MPa. Densities were measured for thiophene and for binary mixtures at five different compositions, x1 = 0.1990, 0.3818, 0.5661, 0.6996, and 0.9217. Densities of thiophene were correlated by four different models, the Benedict-Webb-Rubin- Starling equation of state (BWRS EoS), the Tait equation (TE), the Toscani and Szwarc (TS) model, and a proposed modification for this last model (MTS). These models represent densities of thiophene with a percent standard deviation of 3.90 × 10-3, 1.97 × 10-2, 2.76 × 10 -2, and 5.54 × 10-3, respectively. The excess molar volumes were determined using densities for thiophene calculated from the BWRS EoS and densities for CO2 calculated from the Span-Wagner EoS. The volumetric behavior and excess molar volumes of CO2 + thiophene mixtures were modeled using the PC-SAFT EoS.
AB - Experimental densities for the CO2 (1) + thiophene (2) binary mixtures are reported from 313 to 363 K and up to 25 MPa. Densities were measured for thiophene and for binary mixtures at five different compositions, x1 = 0.1990, 0.3818, 0.5661, 0.6996, and 0.9217. Densities of thiophene were correlated by four different models, the Benedict-Webb-Rubin- Starling equation of state (BWRS EoS), the Tait equation (TE), the Toscani and Szwarc (TS) model, and a proposed modification for this last model (MTS). These models represent densities of thiophene with a percent standard deviation of 3.90 × 10-3, 1.97 × 10-2, 2.76 × 10 -2, and 5.54 × 10-3, respectively. The excess molar volumes were determined using densities for thiophene calculated from the BWRS EoS and densities for CO2 calculated from the Span-Wagner EoS. The volumetric behavior and excess molar volumes of CO2 + thiophene mixtures were modeled using the PC-SAFT EoS.
KW - Carbon dioxide
KW - Correlation
KW - Density
KW - Excess molar volume
KW - PC-SAFT
KW - Thiophene
KW - Vibrating tube densitometer
UR - http://www.scopus.com/inward/record.url?scp=24944559266&partnerID=8YFLogxK
U2 - 10.1016/j.fluid.2005.07.017
DO - 10.1016/j.fluid.2005.07.017
M3 - Artículo
SN - 0378-3812
VL - 236
SP - 193
EP - 204
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 1-2
ER -