TY - JOUR
T1 - Salting-out in aqueous solutions of ionic liquids and K 3PO 4: Aqueous biphasic systems and salt precipitation
AU - Najdanovic-Visak, V.
AU - Canongia Lopes, J.N.
AU - Visak, Z.P.
AU - Trindade, J.
AU - Rebelo, L.P.N.
N1 - This is an open access article distributed under the Creative Commons Attribution License
PY - 2007/7/31
Y1 - 2007/7/31
N2 - The salting-out effect produced by the addition of potassium phosphate, K3PO4to aqueous solutions of water-miscible ionic liquids, viz. 1-ethyl-3-methylimidazoliumethyl sulfate, 1-butyl-3-methylimidazolium methyl sulfate, or 1-alkyl-3-methylimidazolium chloride (alkyl = butyl, octyl or decyl) is investigated. The effects areanalyzed using both the corresponding temperature–composition pseudo-binary andcomposition ternary phase diagrams. Different regions of liquid-liquid and solid-liquidphase demixing are mapped. The phase behavior is interpreted taking into account thecomplex and competing nature of the interactions between the ionic liquid, the inorganicsalt and water. In the case of solutions containing 1-octyl- or 1-decyl-3-methylimidazoliumchloride, the smaller magnitude of the salting-out effects is explained in terms of thepossibility of self-aggregation of the ionic liquid.
AB - The salting-out effect produced by the addition of potassium phosphate, K3PO4to aqueous solutions of water-miscible ionic liquids, viz. 1-ethyl-3-methylimidazoliumethyl sulfate, 1-butyl-3-methylimidazolium methyl sulfate, or 1-alkyl-3-methylimidazolium chloride (alkyl = butyl, octyl or decyl) is investigated. The effects areanalyzed using both the corresponding temperature–composition pseudo-binary andcomposition ternary phase diagrams. Different regions of liquid-liquid and solid-liquidphase demixing are mapped. The phase behavior is interpreted taking into account thecomplex and competing nature of the interactions between the ionic liquid, the inorganicsalt and water. In the case of solutions containing 1-octyl- or 1-decyl-3-methylimidazoliumchloride, the smaller magnitude of the salting-out effects is explained in terms of thepossibility of self-aggregation of the ionic liquid.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-34548387513&partnerID=MN8TOARS
UR - https://www.mdpi.com/1422-0067/8/8/736
U2 - 10.3390/i8080736
DO - 10.3390/i8080736
M3 - Article
SN - 1661-6596
VL - 8
SP - 736
EP - 748
JO - International Journal of Molecular Sciences
JF - International Journal of Molecular Sciences
IS - 8
ER -