IONIC LIQUIDS

摘要

An ionic liquid which is substantially free of Lewis acidity wherein said ionic liquid is obtainable by reacting (a) an organo-nitrogen compound or an organo-phosphorus compound which is substantially free of Lewis acidity with (b) a Bronsted acid, in a mole ratio of (a) to (b) of less than or equal to 1 with the proviso that where the Bronsted acid gives up a single proton the mole ratio of (a) to (b) is less than 1. The ionic liquids are useful as acid catalysts or as solvents for acid catalysts, for example, in esterification reactions or in the alkylation of aromatics.