TY - JOUR
T1 - Vapor-liquid equilibria and critical points for the carbon dioxide +1-pentanol and carbon dioxide +2-pentanol systems at temperatures from 332 to 432 K
AU - Silva-Oliver, G.
AU - Galicia-Luna, Luis A.
AU - Sandler, S. I.
N1 - Funding Information:
The authors are grateful to NSF, CONACYT (Project 26432-A, C-30042-U) and IPN for their financial support.
PY - 2002/7/15
Y1 - 2002/7/15
N2 - Vapor-liquid equilibria and critical points of the systems: carbon dioxide+1-pentanol at (333.08, 343.69, 374.93, 414.23 and 426.86K) up to 18.6MPa and carbon dioxide+2-pentanol at (332.10, 343.61, 374.15, 397.56, 422.28 and 431.78K) up to 15.7MPa are reported at compositions near the critical point. An apparatus capable of measurement up to 60MPa and 523K based on the static-analytic method has been used to perform fast determinations of the vapor-liquid equilibria and critical pressures. The Soave, Peng-Robinson and Patel-Teja equations of state with Wong-Sandler type mixing rules and temperature independent parameters cannot predict the VLE of the carbon dioxide+1-pentanol and carbon dioxide+2-pentanol systems well (deviations > 10% for pressure). Instead the EoS mixture parameters were fitted to the VLE data at each temperature, separately. In this way the calculated VLE are found to be in good agreement with the experimental data.
AB - Vapor-liquid equilibria and critical points of the systems: carbon dioxide+1-pentanol at (333.08, 343.69, 374.93, 414.23 and 426.86K) up to 18.6MPa and carbon dioxide+2-pentanol at (332.10, 343.61, 374.15, 397.56, 422.28 and 431.78K) up to 15.7MPa are reported at compositions near the critical point. An apparatus capable of measurement up to 60MPa and 523K based on the static-analytic method has been used to perform fast determinations of the vapor-liquid equilibria and critical pressures. The Soave, Peng-Robinson and Patel-Teja equations of state with Wong-Sandler type mixing rules and temperature independent parameters cannot predict the VLE of the carbon dioxide+1-pentanol and carbon dioxide+2-pentanol systems well (deviations > 10% for pressure). Instead the EoS mixture parameters were fitted to the VLE data at each temperature, separately. In this way the calculated VLE are found to be in good agreement with the experimental data.
KW - EoS
KW - Mixing rules
KW - VLE
KW - VLE apparatus
UR - http://www.scopus.com/inward/record.url?scp=0037100011&partnerID=8YFLogxK
U2 - 10.1016/S0378-3812(02)00024-9
DO - 10.1016/S0378-3812(02)00024-9
M3 - Artículo
SN - 0378-3812
VL - 200
SP - 161
EP - 172
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 1
ER -