Equilibrium of Contact and Solvent-Separated Ion Pairs in Mixtures of Protic Ionic Liquids and Molecular Solvents Controlled by Polarity

Isobaric vapor-liquid equilibrium (VLE) data of the ternary system acetone + chloroform + 1,3-dimethylimidazolium dimethylphosphate ([MMIM][DMP]) or 1-ethyl-3-methylimidazolium diethylphosphate ([EMIM][DEP]) were obtained at 101.3 kPa. Results indicated that the addition of [MMIM][DMP] or [EMIM][DEP] could eliminate the azeotropic point of the binary system of acetone + chloroform when the mole fraction of ionic liquids (ILs) was above 0.15. Besides, the experimental data could be well correlated by the nonrandom two-liquid (NRTL) model. The structures as well as interactions between molecular solvents (acetone, chloroform) and the ion pairs ([MMIM][DMP], [EMIM][DEP]) were studied by quantum chemical calculations. The result indicated that the interaction energies (ΔE) follow the order of ΔE(acetone + [EMIM][DEP]) > ΔE(acetone + [MMIM][DMP]) > ΔE(chloroform + [EMIM][DEP]) ≈ ΔE(chloroform + [MMIM][DMP]), and chloroform had stronger affinity to ionic liquids than acetone.

Download Full-text

Utilization of the dye N-methyl-6-oxyquinolone as an optical acidometer in molecular solvents and protic ionic liquids

Chemical Communications ◽

10.1039/c7cc04628f ◽

2017 ◽

Vol 53 (78) ◽

pp. 10761-10764 ◽

Cited By ~ 6

Author(s):

Stella Schmode ◽

Ralf Ludwig

Keyword(s):

Ionic Liquids ◽

Protic Ionic Liquids ◽

Highly Sensitive ◽

Molecular Solvents

We developed a procedure to use the highly sensitive dyeN-methyl-6-oxyquinolone as an acidity probe in molecular solvents and protic ionic liquids.

Download Full-text

1,8-Diazabicyclo[5.4.0]-undec-7-ene based protic ionic liquids and their binary systems with molecular solvents catalyzed Michael addition reaction

New Journal of Chemistry ◽

10.1039/d0nj03012k ◽

2020 ◽

Vol 44 (32) ◽

pp. 13701-13706

Author(s):

Gulshan Ara ◽

Muhammed Shah Miran ◽

Md. Mominul Islam ◽

M. Yousuf A. Mollah ◽

M. Muhibur Rahman ◽

...

Keyword(s):

Acetic Acid ◽

Ionic Liquids ◽

Michael Addition ◽

Binary Systems ◽

Addition Reaction ◽

Michael Addition Reaction ◽

Protic Ionic Liquids ◽

Molecular Solvents

Michael addition reaction of acetylacetone and cyclohexenone has been studied using 1,8-diazabicyclo[5.4.0]-undec-7-ene (DBU) based protic ionic liquids and their binary systems with DBU, water and acetic acid as catalysts.

Download Full-text

Solvation properties of protic ionic liquids and molecular solvents

Physical Chemistry Chemical Physics ◽

10.1039/c9cp05711k ◽

2020 ◽

Vol 22 (1) ◽

pp. 114-128 ◽

Cited By ~ 7

Author(s):

Dilek Yalcin ◽

Calum J. Drummond ◽

Tamar L. Greaves

Keyword(s):

Ionic Liquids ◽

Protic Ionic Liquids ◽

Potential Applications ◽

Molecular Solvents

Ionic liquids (ILs) are highly tailorable solvents with many potential applications. Knowledge about their solvation properties is highly beneficial in the utilization of ILs for specific tasks, though for many ILs this is currently unknown.

Download Full-text

Micelle formation of a non-ionic surfactant in non-aqueous molecular solvents and protic ionic liquids (PILs)

Physical Chemistry Chemical Physics ◽

10.1039/c6cp03332f ◽

2016 ◽

Vol 18 (35) ◽

pp. 24377-24386 ◽

Cited By ~ 14

Author(s):

Emmy C. Wijaya ◽

Frances Separovic ◽

Calum J. Drummond ◽

Tamar L. Greaves

Keyword(s):

Free Energy ◽

Ionic Liquids ◽

Energy Density ◽

Micelle Formation ◽

Ionic Surfactant ◽

Protic Ionic Liquids ◽

Diverse Range ◽

Cohesive Energy Density ◽

Free Energy Of Micellization ◽

Molecular Solvents

Micelle formation of a non-ionic amphiphile, C12E6, was investigated in a diverse range of molecular solvents and protic ionic liquids (PILs). A link between the solvent cohesive energy density and the free energy of micellization was discussed.

Download Full-text