Liquid–liquid equilibria of ionic liquid N-butylpyridinium tetrafluoroborate and disodium hydrogen phosphate/sodium chloride/sodium sulfate/ammonium sulfate aqueous two-phase systems at T = 298.15 K: Experiment and correlation

Influence of the Salting-Out Ability and Temperature on the Liquid–Liquid Equilibria of Aqueous Two-Phase Systems Based on Ionic Liquid–Organic Salts–Water

“…The salting-out ability of the cations follows the order of Na + (Δ G hyd = −365 kJ mol –1 ) > NH 4 + (Δ G hyd = −285 kJ mol –1 ) . This regularity is the same as our previous works and Han’s. ,, Thus, the aqueous two-phase system of [Bpy]­OTF + Na 2 C 4 H 4 O 4 + H 2 O has a wider applied range.…”

“…45 This regularity is the same as our previous works and Han's. 26,46,47 6, and the tie-line data determined at varying temperatures for the two systems are given in Figures 5 and 6, where w 1 , w 2 , and w 3 are the mass fractions of [Bpy]OTF, salt, and water, respectively. As seen, the higher mass fraction of ionic liquids and salts in aqueous two-phase systems more easily form liquid−liquid equilibria.…”

The role of ionic liquid [C4C1im]Br as an adjuvant on the two‐phase formation and the extraction of l‐phenylalanine in ABS composed of PEG400 and potassium citrate at different temperatures

“…ILs are salts with melting points <100°C and are generally comprised of a large organic cation and an organic/inorganic anion . Due to their ionic nature, these compounds exhibit several noteworthy properties, such as a negligible vapor pressure, nonflammability, a wide liquid range, and good thermal and chemical stability, that make them attractive for the development of “greener” separation processes . Besides these properties, one of the main characteristics of ILs is the high degree of tunability of properties by varying the chemical structures of cations and anions .…”

“…15 Due to their ionic nature, these compounds exhibit several noteworthy properties, such as a negligible vapor pressure, nonflammability, a wide liquid range, and good thermal and chemical stability, that make them attractive for the development of "greener" separation processes. [16][17][18][19][20][21] Besides these properties, one of the main characteristics of ILs is the high degree of tunability of properties by varying the chemical structures of cations and anions. 16 Due to these outstanding properties, Rogers et al 22 proposed, in 2003, the hydrophilic ILs as alternatives to polymers in polymer-salt ABS.…”

Phase Behavior of Inorganic Salts Sodium Succinate and Ammonium Citrate in N-Ethylpyridinium Tetrafluoroborate Solution at Different Temperatures

“…To study the effects of IL type, the liquid–liquid equilibrium data for ATPSs composed of [EPy]­BF 4 and different sodium salts and ammonium salts , were then determined experimentally. In the follow-up study, the [EPy]-based ionic liquid was substituted for [4-MBP]­[BF 4 ] and [BPy]­BF 4 to form ATPSs with numerous organic salts , and inorganic salts to figure out how branched chains affect the phase-separation ability, from which it can be concluded that ionic liquids with BF 4 – perform better than other ILs we employed to form ATPSs. However, the temperature effects on these systems are not clear yet due to different temperature responses of the phase-forming substances, that is, the ILs and salts.…”