Synthesis, properties and catalysis of novel methyl- or ethyl- sulfate-anion-based acidic ionic liquids

Abstract In this paper, two kinds of novel acidic ionic liquids containing methyl- or ethyl-sulfate anions can be easily and efficiently prepared. The density, viscosity, thermal property of these ILs , and temperature dependency of ionic conductivity were measured and investigated in detail. The catalysis of ionic liquids to the Fisher esterifications was also studied.