Liquid‐Liquid Equilibrium Data for the Ionic Liquid N‐Ethyl‐Pyridinium Bromide with Several Sodium Salts and Potassium Salts | Zendy

Yuliang Li | Zendy; Xiaojia Lu | Zendy; Hao Jing | Zendy; Changquan Chen | Zendy

Open Access

Liquid‐Liquid Equilibrium Data for the Ionic Liquid N‐Ethyl‐Pyridinium Bromide with Several Sodium Salts and Potassium Salts

Author(s) -

Yuliang Li,

Xiaojia Lu,

Hao Jing,

Changquan Chen

Publication year - 2013

Publication title -

journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.436

H-Index - 50

eISSN - 2090-9063

pISSN - 2090-9071

DOI - 10.1155/2013/857272

Subject(s) - chemistry , binodal , ionic liquid , bromide , pyridinium , solubility , salt (chemistry) , aqueous solution , potassium bromide , inorganic chemistry , salting out , potassium , phase (matter) , medicinal chemistry , organic chemistry , phase diagram , catalysis

The liquid-liquid equilibrium (LLE) data for systems containing N-ethyl-pyridinium bromide ([EPy]Br), salt (Na2HPO4, K2HPO4, K2SO4, C4O6H4KNa), and water have been measured experimentally at T=298.15 K and the formations of these four aqueous two-phase systems (ATPSs) have been discussed. Also, the effective excluded volume (EEV) values obtained from the binodal models for the four systems were determined and the salting-out abilities of different salts follow the order of K2SO4>K2HPO4>Na2HPO4>C4O6H4KNa. The solubility data were correlated by the Merchuk and other equations while the tie-line data by the Othmer-Tobias, Bancroft, two-parameter, and Setschenow-type equations. The correlation coefficients evidenced that experimental data fitted well to all these equations. These four salts were proved successfully to form ATPSs with N-ethyl-pyridinium bromide, making a significant contribution to the further study of this kind of ATPS

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