Electrochemical Behavior of Nitrobenzene in Binary Ionic Liquids OMImBF₄/BMImPF₆

摘要

The binary ionic liquids([OMIm][BF4]/[BMIm][PF6]) were studied and applied to reduction ofnitrobenzene for the first time. ATR-IR spectroscopy was used to demonstrate the variation ofchemical environment of binary ionic liquids, and found that the anion IR bands have remarkablechanges. Cyclic voltammetry and constant-potential electrolysis show that the reduction ofnitrobenzene in binary ionic liquid (3:1) exhibit higher current density and more positive potential thanthat in the neat ionic liquid, and the conversion and selectivity of the product were also superior to thatof single ionic liquid. The optimal results should be attributed to the changed chemical environment inbinary ionic liquids and the effective interaction between binary ionic liquid and nitrobenzene. Thisprovides a new method for functionalization of ionic liquids.