Superoxide ion (O2-) generation in ionic liquids (ILs) has been investigated recently using various types of ILs. Imidazolium based ILs are the most frequently studied ILs. In this work, O2 - was generated and analyzed electrochemically using cyclic voltammetry and chronoamperometry techniques from O2 dissolved in 1-butyl-3-methylimidazolium trifluoromethanesulfonate [BMIm][TfO]. Furthermore, O2- was generated chemically by potassium superoxide addition into the same IL. UV/Vis spectrophotometry was utilized for testing the long term stability of the generated O2- and GC/MS was used to investigate the possible reaction between the generated O 2- and [BMIm][TfO]. The results showed that O 2- was unstable in this IL. The GC/MS results confirmed that O2- has reacted with [BMIm][TfO] producing 1-butyl-3-methyl-2-imidazolone in a high purity and excellent yield. This product and its family are used widely in various applications and have a very important role in pharmacology and chemotherapy.
ASJC Scopus subject areas