Phase equilibria of mixtures of mutually immiscible ionic liquids

Arce, Alberto; Earle, Martyn J.; Katdare, Suhas P.; Rodríguez, Héctor; Seddon, Kenneth R.

doi:10.1016/j.fluid.2007.06.017

Cited by 65 publications

(65 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An interesting test case for the a priory prediction is the LLE of the mutually immiscible ILs [C 2 [49]. A comparison of calculated (electroneutral mixture) and experimental data is given in Fig.…”

Section: Liquid-liquid Equilibria (Lle)mentioning

confidence: 99%

COSMO-RS as a tool for property prediction of IL mixtures—A review

Diedenhofen¹,

Klamt²

2010

Fluid Phase Equilibria

402

266

View full text Add to dashboard Cite

a b s t r a c tIn its first applications to ionic liquids the COSMO-RS method has shown to yield good qualitative and satisfying quantitative predictions for the activity coefficients of neutral compounds in ionic liquids and for binary mixtures of ionic liquids and neutral solvents. Since this success was achieved predictively, i.e. without any special parameterization, COSMO-RS since then has become a widely used and efficient tool for the prediction and screening of ionic liquid properties. In this article we give an overview of the various approaches and methodological differences used in this context by different groups.

show abstract

Section: Liquid-liquid Equilibria (Lle)mentioning

confidence: 99%

COSMO-RS as a tool for property prediction of IL mixtures—A review

Diedenhofen¹,

Klamt²

2010

Fluid Phase Equilibria

402

266

View full text Add to dashboard Cite

show abstract

“…[16] Another approach is to use a eutectic mixture of two or more components that individually have attractive transport properties but which have un-usefully high melting points when pure. Numerous studies have been performed on binary or ternary ionic liquid systems, [5,[17][18][19][20][21][22][23][24][25] including molecular dynamics simulations [24] and detailed studies on mixing and miscibility [17,18,22] but there are limited examples of data on transport properties. [23] There have been some reports of systems involving pyrrolidinium-based ILs.…”

Section: Introductionmentioning

confidence: 99%

Transport Properties and Phase Behaviour in Binary and Ternary Ionic Liquid Electrolyte Systems of Interest in Lithium Batteries

et al. 2011

View full text Add to dashboard Cite

A binary ionic liquid (IL) system based on a common cation, N-methyl-N-propylpyrrolidinium (C(3) mpyr(+)), and either bis(trifluoromethanesulfonyl)imide (NTf(2) (-)) or bis(fluorosulfonyl) imide (FSI(-) as the anion is explored over its entire composition range. Phase behavior, determined by DSC, shows the presence of a eutectic temperature at 247 K and composition around an anion ratio of 2:1 (FSI(-) :NTf(2)(-)) with the phase diagram for this system proposed (under the thermal conditions used). Importantly for electrochemical devices, the single phase melting transition at the eutectic is well below ambient temperatures (247 K). To investigate the effect of such anion mixing on the lithium ion speciation, conductivity and PFG-NMR diffusion measurements were performed in both the binary IL system as well as the Li-NTf(2) -containing ternary system. The addition of the lithium salt to the mixed IL system resulted in a decrease in conductivity, as is commonly observed in the single-component IL systems. For a fixed lithium salt composition, both conductivity and ion diffusion have linear behaviour as a function of the anion ratio, however, the rate of change of the diffusion coefficient seems greater in the presence of lithium. From the application point of view, the addition of the FSI(-) to the NTf(2)(-) IL results in a considerable increase in lithium ion diffusivity at room temperature and no evidence of additional complex ion behaviour.

show abstract

“…Most hydrophobic ionic liquids are very poorly soluble in water phases, but water has appreciable solubility in the ionic liquid phase. Thus, if the mobile phase in CCC is water, then product isolation is simply a matter of evaporating the water phase [40,124,125,129,[141][142][143][144].…”

Section: Ionic Liquid-water Systemsmentioning

confidence: 99%

“…This requires both experience and a database of ionic liquid properties [147][148][149]. For the separations discussed here (Table 4), the biphasic combinations of ionic liquids and molecular solvents were chosen based on previous research into ionic liquid phase behaviour and solvent extraction studies (also see Section 3.4) [40,42,124,125,129,[141][142][143]149]. One of the simple ways to find and select biphasic system consisting of ionic liquids and other solvents is demonstrated in Fig.…”

Section: Solvent Selectionmentioning

confidence: 99%

Ionic Liquid–Liquid Chromatography: A New General Purpose Separation Methodology

Brown¹,

Earle

Gîlea

et al. 2017

Topics in Current Chemistry Collections

Self Cite

View full text Add to dashboard Cite

Ionic liquids can form biphasic solvent systems with many organic solvents and water, and these solvent systems can be used in liquid-liquid separations and countercurrent chromatography. The wide range of ionic liquids that can by synthesised, with specifically tailored properties, represents a new philosophy for the separation of organic, inorganic and bio-based materials. A customised countercurrent chromatograph has been designed and constructed specifically to allow the more viscous character of ionic liquid-based solvent systems to be used in a wide variety of separations (including transition metal salts, arenes, alkenes, alkanes, bio-oils and sugars).

show abstract

Phase equilibria of mixtures of mutually immiscible ionic liquids

Cited by 65 publications

References 21 publications

COSMO-RS as a tool for property prediction of IL mixtures—A review

COSMO-RS as a tool for property prediction of IL mixtures—A review

Transport Properties and Phase Behaviour in Binary and Ternary Ionic Liquid Electrolyte Systems of Interest in Lithium Batteries

Ionic Liquid–Liquid Chromatography: A New General Purpose Separation Methodology

Contact Info

Product

Resources

About