Thermodynamic Properties and Aggregation Behavior of Ionic Liquids

Ionic Liquids (ILs) are potentially perspective industrial solvents because they combine a number of properties for being environmentally harmless and recyclable reaction media in chemical processes. ILs are non-flammable, extremely low-volatile, show catalytic activity and can be tailored for numerous specific applications by modifying their functionality relatively easily. ILs are salts that remain liquid at ambient temperatures. In solutions, long chain ILs form micelles and other nanoscale structures. Despite rapidly growing literature on ILs there is a lack of understanding their basic properties. Our goal is to understand how ILs work by relating molecular characteristics of ILs to their macroscopic properties. Current research includes: - Application of variational-field theory to deduce the equation of state of ILs solution and study the effects of asymmetric charge distribution of the large organic cation; - Experimental study and molecular-thermodynamic modeling of aggregation phenomena in aqueous solutions of ILs; - Correlation and prediction of high-pressure phase diagrams in CO2+ILs with the aid of a group-contribution lattice-fluid EOS.

1-n-Octyl-3-methyl-imidazolium bis-(trifluoromethylsulfonil) imide

1-n-Butyl-3-methyl-imidazolium tetrafluoroborate

1-n-Butyl-3-methyl-imidazolium hexafluorophosphate imide


Publications:
1.

E.Aksenova, A.Victorov.New Molecular-Based EOS for Ionic Liquids: Steric Asymmetry Versus Specific Ion Effects. International Conference PPEPPD-2007, Crete, Abstracts, p.229

2.

Smirnova N.A., Piotrovskaya E.M., Victorov A.I., Nanostructure Organization in Solutions of Amphiphilic Substances: Effects of Additives. XVIII Mendellevs Congress on General and Applied Chemistry Materials Chemistry, Nanostructures and Nanotechnologies, Moscow, Sept., 23-28, 2007, Abstr., p.60.

3.

Balaban A.A., Victorov A.I. A Quasichemical Lattice-Fluid Model for Phase Behavior of Systems that Contain Ionic Liquids. XVI International Conference on Chemical Thermodynamics in Russia, RCCT2007, Suzdal, July 1-6, 2007, Abstracts, vol.I, p.332.