PREPARATION OF IONIC LIQUIDS

摘要

Provided is a method for preparation of non-halide based ionic liquids, comprising reacting a halide salt of an organic cation with a Bronsted acid in the presence of an alcohol or alkene or alkyne. The non-halide based ionic liquid product of the reaction can be purified by removing hydrocarbyl halide, and any unreacted starting materials and water if present, for example by distillation. The halide ion content of the ionic liquid product can be minimized by using an excess of alcohol or alkene or alkyne in the reaction and/or treating crude ionic liquid with a further quantity of alcohol or alkene or alkyne.