Ionic liquids

They are seen as green solvents due to their negligible vapor pressures so they are important in green chemistry and clean technology. They also possess unique properties, such as a very wide liquidus range, tunable solvating power, and high thermal stability. They have a wide range of applications in fields as diverse as petrochemicals, fine chemicals, pharmaceuticals, biotechnology, hydrometallurgy, environmental remediation and nuclear sciences.

Measuring the solubility and diffusivity of gases and vapors in ionic liquids is crucial for many of these applications but understanding the thermodynamics is also of fundamental interest. These measurements can be performed over a range of pressures using the gravimetric technique. Instruments from the IGA and IGAsorp series have been used in a number of studies on these materials, including the investigation of water, carbon dioxide, and hydrofluorocarbon sorption. The XEMIS sorption microbalance extends both the range of species and pressures that can be studied.

Related Publications

The solubility of gases in ionic liquids

M. B. Shiflett and E. J. Maginn

AIChE Journal 63 (2017) 5722-4737

DOI: 10.1002/aic.15957

Thermodynamic and thermophysical properties of the reference ionic liquid: 1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]amide (including mixtures) Part 1. Experimental methods and results

K. N. Marsh, J. F. Brennecke, R. D. Chirico, M. Frenkel, A. Heintz, J. W. Magee, C. J. Peters, L. P. N. Rebelo and K. R. Seddon

Pure and Applied Chemistry 81 (5) (2009) 781-790

DOI: 10.1351/PAC-REP-08-09-21

Supported ionic liquid membranes for water and volatile organic compounds separation: Sorption and permeation properties

A. Dahi, K. Fatyeyeva, D. Langevin, C. Chappey, S. P. Rogalsky, O. P. Tarasyuk, A. Benamor and S. Marais

Journal of Membrane Science 458 (2014) 164-178

DOI: 10.1016/j.memsci.2014.01.031

Densities and low pressure solubilities of carbon dioxide in five promising ionic liquids

T. Nonthanasin, A. Henni and C. Saiwan

RSC Advances 4 (2014) 7566-7578

DOI: 10.1039/C3RA46339G

Alkyl-methylimidazolium tricyanomethanide ionic liquids under extreme confinement onto nanoporous ceramic membranes

A. I. Labropoulos, G. E. Romanos, E. Kouvelos, P. Falaras, V. Likodimos, M. Francisco, M. C. Kroon, B. Iliev, G. Adamova and T. J. S. Schubert

Journal of Physical Chemistry C 117 (2013) 10114-10127

DOI: 10.1021/jp400219b

Separation of N2O and CO2 using Room-Temperature Ionic Liquid [bmim][Ac]

M. B. Shiflett, B. A. Elliott, A. M. S. Niehaus and A. Yokozeki

Separation Science and Technology 47 (2012) 411-421

DOI: 10.1080/01496395.2011.627905

Ring Opened Heterocycles: Promising Ionic Liquids for Gas Separation and Capture

S. M. Mahurin, J. S. Yeary, S. Baker, D. Jiang, S. Dai and G. A. Baker

Journal of Membrane Science 401-402 (2012) 61-67

DOI: 10.1016/j.memsci.2012.01.042

Screening of Ionic Liquids to Capture CO2 by COSMO-RS and Experiments

X. Zhang, Z. Liu and W. Wang

AIChE Journal 54 (2008) 2717-2728

DOI: 10.1002/aic.11573

Solvent Properties of Functionalized Ionic Liquids for CO2 Absorption

L. M. Galán Sánchez, G. W. Meindersma and A. B. de Haan

Journal of Physical Chemistry C 117 (2013) 10114-10127

DOI: 10.1205/cherd06124

Solubilities and Diffusivities of Carbon Dioxide in Ionic Liquids : [bmim][PF6] and [Bmim][BF4]

M. B. Shiflett and A. Yokozeki

Industrial and Engineering Chemistry Research 44 (2005) 4453-4464

DOI: 10.1021/ie058003d

Solubilities and Thermodynamic Properties of Gases in the Ionic Liquid 1-n- Butyl-3-methylimidazolium Hexaflurophosphate

J. L. Anthony, E. J. Maginn, and J. F. Brennecke

Journal of Physical Chemistry B 106 (2002) 7315-7320

DOI: 10.1021/jp020631a