TY - JOUR
T1 - High pressure vapor-liquid equilibrium for the ternary system ethanol/(±)-menthol/carbon dioxide
AU - Rebocho, Sílvia
AU - Nunes, Ana V. M.
AU - Najdanovic-Visak, Vesna
AU - Barreiros, Susana
AU - Simões, Pedro
AU - Paiva, Alexandre
N1 - info:eu-repo/grantAgreement/FCT/3599-PPCDT/122106/PT#
info:eu-repo/grantAgreement/FCT/COMPETE/132972/PT#
info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F64133%2F2009/PT#
info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F74994%2F2010/PT#
info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F44946%2F2008/PT#
PY - 2014/8
Y1 - 2014/8
N2 - In this work the phase behavior of the ternary system ethanol/(±)- menthol/CO2 was studied at the temperatures of 313 and 323 K, in the pressure range 8-10 MPa. Experiments were performed using a high pressure phase equilibrium apparatus with a visual cell. CO2 is more selective toward ethanol, separation factors ranging from 1.6 to 7.6 at the conditions tested. The pTxy data obtained were correlated with the Peng-Robinson equation of state combined with the Mathias-Klotz-Prausnitz mixing rule. The model gave a good fitting to the data, with a total average absolute deviation of 3.7%, and was able to predict the occurrence of a three-phase region observed experimentally at 313 K and 9 MPa.
AB - In this work the phase behavior of the ternary system ethanol/(±)- menthol/CO2 was studied at the temperatures of 313 and 323 K, in the pressure range 8-10 MPa. Experiments were performed using a high pressure phase equilibrium apparatus with a visual cell. CO2 is more selective toward ethanol, separation factors ranging from 1.6 to 7.6 at the conditions tested. The pTxy data obtained were correlated with the Peng-Robinson equation of state combined with the Mathias-Klotz-Prausnitz mixing rule. The model gave a good fitting to the data, with a total average absolute deviation of 3.7%, and was able to predict the occurrence of a three-phase region observed experimentally at 313 K and 9 MPa.
KW - (±)-Menthol
KW - Ethanol
KW - Solubility
KW - Supercritical carbon dioxide
KW - Vapor-liquid equilibrium
UR - http://www.scopus.com/inward/record.url?scp=84903587440&partnerID=8YFLogxK
U2 - 10.1016/j.supflu.2014.06.006
DO - 10.1016/j.supflu.2014.06.006
M3 - Article
AN - SCOPUS:84903587440
VL - 92
SP - 282
EP - 287
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
SN - 0896-8446
ER -