Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - High pressure vapor–liquid equilibrium for the ternary system ethanol/(±)-menthol/carbon dioxide
AU - Rebocho, Sílvia
AU - V. M. Nunes, Ana
AU - Najdanovic-Visak, Vesna
AU - Barreiros, Susana
AU - Simões, Pedro M. C.
AU - Paiva, Alexandre
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 - Vapor–liquid equilibrium
KW - Supercritical carbon dioxide
KW - (±)-Menthol
KW - Ethanol
KW - Solubility
U2 - 10.1016/j.supflu.2014.06.006
DO - 10.1016/j.supflu.2014.06.006
M3 - Journal article
VL - 92
SP - 282
EP - 287
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
SN - 0896-8446
ER -