J. Chem. Thermodynamics 120 (2018) 88–96 Contents lists available at ScienceDirect J. Chem. Thermodynamics journal homepage: www.elsevier.com/locate/jct Evaluation of anion chain length impact on aqueous two phase systems formed by carboxylate anion functionalized ionic liquids Anusha Basaiahgari, Ramesh L. Gardas Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India ar ti c l e i nf o ab stra ct Article history: Aqueous biphasic systems (ABS) based on ionic liquids (ILs) are considered as promising separation and Received 8 September 2017 extraction media for replacing conventional extraction systems consisting of volatile organic solvents. In Received in revised form 11 January 2018 the present work, set of ILs consisting of tetrabutylammonium cation and carboxylate anions were syn- Accepted 13 January 2018 thesised and studied for their ability to form ABS in presence of strong salting-out agent K PO at 298.15 3 4 K and atmospheric pressure. The inﬂuence of alkyl chain length of ILs’ anions on the phase splitting ability has been systematically investigated. Experimentally determined binodal curve data has been ﬁtted to Keywords: Merchuk’s equation and corresponding ﬁtting parameters have also been determined. Further, selected Aqueous biphasic system ternary systems have been analysed for their extraction
The Journal of Chemical Thermodynamics – Elsevier
Published: May 1, 2018
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