Activity coefficients at infinite dilution of alkanes and alkenes in 1-alkyl-3-methylimidazolium tetrafluoroborate

Bahlmann, Matthias; Nebig, Silke; Gmehling, Jürgen

doi:10.1016/j.fluid.2009.05.007

Cited by 28 publications

(18 citation statements)

References 16 publications

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“…118,134,136 The enthalpies on addition of alkanes or alcohols increases with increasing carbon chain length and are positive, indicating weak solvent-solute interactions. 118,134,136 The greater interactions for the IL with the alcohols in comparison 135 C 4 MPyrr TCB (1-butyl-1-methylpyrrolidinium tetracyanoborate) 136 and C 4 MPyrr FAP (1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate), 137 BMIm BF 4 , 124 BMIm SCN (BMIm thiocyanate), 125 BMIm TOS (BMIm tosylate) 126 and BMIm NO 3 . 127 This journal is c The Royal Society of Chemistry 2013 Chem.…”

Section: Non-polar Solutes In Ionic Liquidsmentioning

confidence: 99%

“…Fig.7Activity coefficients for alkanes in ionic liquids with a C4 alkyl chain, BMIm BOB (1-butyl-methylimidazolium bis(oxalato)borate), 120 C 4 Py Tf 2 N (N-alkylpyridinium Tf 2 N),135 C 4 MPyrr TCB (1-butyl-1-methylpyrrolidinium tetracyanoborate)136 and C 4 MPyrr FAP (1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate),137 BMIm BF 4 ,124 BMIm SCN (BMIm thiocyanate),125 BMIm TOS (BMIm tosylate)126 and BMIm NO 3 127. …”

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confidence: 99%

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Solvent nanostructure, the solvophobic effect and amphiphile self-assembly in ionic liquids

2013

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The ability of ionic liquids (ILs) to support amphiphile self-assembly into a range of mesophase structures has been established as a widespread phenomenon. From the ILs evaluated as self-assembly media, the vast majority have supported some lyotropic liquid crystal phase formation. Many neat ionic liquids have been shown to segregate into polar and non-polar domains to form a nanostructured liquid. A very strong correlation between the nanostructure of the ionic liquid and its characteristics as an amphiphile self-assembly solvent has been found. In this review we discuss ionic liquids as amphiphile self-assembly media, and identify trends that can be used to distinguish which ionic liquids are likely to have good promotion properties as self-assembly media. In particular these trends focus on the nanostructure of neat ionic liquids, their solvent cohesive energy density, and the related solvophobic effect. We forecast that many more ILs will be identified as amphiphile self-assembly solvents in the future.

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Section: Non-polar Solutes In Ionic Liquidsmentioning

confidence: 99%

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confidence: 99%

Solvent nanostructure, the solvophobic effect and amphiphile self-assembly in ionic liquids

2013

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“…In recent years, great progress has been made in chemistry and physico-chemical properties of ionic liquids (ILs) [14–20]. Imidazolium-based ILs with a different anion are treated as a novel solvents with interesting properties, which can be used as an entrainers in the separation processes for the several mixtures [15,16,19,20].…”

Section: Introductionmentioning

confidence: 99%

“…Imidazolium-based ILs with a different anion are treated as a novel solvents with interesting properties, which can be used as an entrainers in the separation processes for the several mixtures [15,16,19,20]. The measurements of activity coefficients at infinite dilution present the first information about the interaction between the IL and the solvent.…”

Section: Introductionmentioning

confidence: 99%

“…The important petroleum problem is the extraction of aromatic hydrocarbons from aliphatic hydrocarbons, or of thiophene from aliphatic hydrocarbons with the high selectivity. The results are usually compared to sulpholane or N -methylpyrrolidinone (NMP), which are used in the industry [15,16,19,20]. The interaction in such a liquid mixture is influenced by dispersion forces, dipole-dipole interaction, hydrogen bonding, charge transfer, and many other factors.…”

Section: Introductionmentioning

confidence: 99%

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Physico-Chemical Properties and Phase Behavior of the Ionic Liquid-β-Cyclodextrin Complexes

Rogalski

Modaressi

Magri

et al. 2013

IJMS

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The solubility of β-cyclodextrin (β-CD) in ionic liquids (ILs) and the activity coefficients at infinite dilution ( γ13∞) of more than 20 solutes (alkanes, aromatic hydrocarbons, alcohols) were measured in four chosen ionic liquids, their mixtures with β-CD, and in the β-CD at high temperatures from 338 to 398 K using the inverse gas chromatography. The intermolecular interactions, inclusion complexes and the possible increasing of the solubility of β-CD in water using the IL are presented. The solubility of β-CD in ten chosen hydrophobic ILs at the temperature T = 423 K was detected. The solid-liquid phase diagrams (SLE) of {IL (1) + β-CD (2)} binary systems at the high mole fraction of the IL were measured for three systems (1-ethyl-3-methylimidazolium chloride, [EMIM][Cl], 1-ethyl-3-methylimidazolium bromide, [EMIM][Br]; and for 1-butyl-3-methylimidazolium chloride, [BMIM][Cl]). The eutectic points were determined at the high IL concentration for all binary systems. The intermolecular interaction and the possibility of inclusion complexes of the IL and/or solvents with β-CD were discussed. The infrared spectroscopy, IR was used for the description of the intermolecular interactions in the (β-CD + IL) systems. It was shown via the activity coefficients at infinite dilution results that the inclusion complexes are dependent on the temperature. The addition of β-CD to the IL does not improve the selectivity of the separation of the aliphatics from aromatics.

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Introducing Ionic Liquids

Welton¹

2014

Supported Ionic Liquids

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Activity coefficients at infinite dilution of alkanes and alkenes in 1-alkyl-3-methylimidazolium tetrafluoroborate

Cited by 28 publications

References 16 publications

Solvent nanostructure, the solvophobic effect and amphiphile self-assembly in ionic liquids

Solvent nanostructure, the solvophobic effect and amphiphile self-assembly in ionic liquids

Physico-Chemical Properties and Phase Behavior of the Ionic Liquid-β-Cyclodextrin Complexes

Introducing Ionic Liquids

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