TY - JOUR
T1 - Volumetric and phase behaviour of mixtures of fluoroalkylphosphate-based ionic liquids with high pressure carbon dioxide
AU - Nunes Da Ponte, Manuel
AU - Zakrzewska, Małgorzata E.
N1 - This work was supported by Fundacao para a Ciencia e a Tecnologia-FCT (Portugal) through the project UID/QUI/50006/2013. M.E. Zakrzewska is thankful to FCT for her doctoral fellowship SFRH/BD/749292010.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - The high-pressure solubility of carbon dioxide in ionic liquids based on tris(pentafluoroethyl)trifluorophosphate ([eFAP]) anion, combined with 1-ethyl-3-methylimidazolium ([emim]), 1-butyl-3-methylimidazolium ([bmim]) and 1-hexyl-3-methylimidazolium ([hmim]) cation, was determined experimentally at the temperature of 313.15 K and pressures up to 10 MPa. Measurements of the volume expansion of the liquid phase upon carbon dioxide dissolution are also reported. The obtained results show that the solubility of CO2 in ionic liquids with the fluoroalkylphosphate anion, as well as the CO2-induced volume expansion of the liquid, are among the highest so far reported for ionic liquids where CO2 dissolves through "physical" mechanisms.
AB - The high-pressure solubility of carbon dioxide in ionic liquids based on tris(pentafluoroethyl)trifluorophosphate ([eFAP]) anion, combined with 1-ethyl-3-methylimidazolium ([emim]), 1-butyl-3-methylimidazolium ([bmim]) and 1-hexyl-3-methylimidazolium ([hmim]) cation, was determined experimentally at the temperature of 313.15 K and pressures up to 10 MPa. Measurements of the volume expansion of the liquid phase upon carbon dioxide dissolution are also reported. The obtained results show that the solubility of CO2 in ionic liquids with the fluoroalkylphosphate anion, as well as the CO2-induced volume expansion of the liquid, are among the highest so far reported for ionic liquids where CO2 dissolves through "physical" mechanisms.
KW - Carbon dioxide
KW - High-pressure solubility
KW - Ionic liquid
KW - Tris(pentafluoroethyl)trifluorophosphate anion
KW - Volume expansion
UR - http://www.scopus.com/inward/record.url?scp=84961956882&partnerID=8YFLogxK
U2 - 10.1016/j.supflu.2016.03.017
DO - 10.1016/j.supflu.2016.03.017
M3 - Article
AN - SCOPUS:84961956882
SN - 0896-8446
VL - 113
SP - 61
EP - 65
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
ER -