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1 Polish Journal of Chemistry

1 2007

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Oxygen Solubility in Ionic Liquids Based on 1-Alkyl-3-methylimidazolium Cations

Chrobok A., Swadźba M., Baj S.

Polish Journal of Chemistry

2007

Vol. 81, nr 3

337-344

This work presents the results of oxygen solubility in ionic liquids based on 1-alkyl-3-methylimidazolium cations. Solubility measurements have been carried out in gasometric apparatus at 22, 50 and 90graduate C under atmospheric pressure. We report the Henry's constants. In general the occurrence of carbon-fluorine bonds and carbon-hydrogen bonds in ionic liquids (ILs) which can create hydrogen bonds with dissolved oxygen, significantly affects the growth of value of solubility constant KH. Additionally, the stability of ILs towards molecular oxygen was tested. All ILs used in this study were stable in the presence of oxygen and free-radical initiator.