Effects of ILs structures on the dissolution capability were systematically studied, and the optimal IL [DBNE]DEP with high dissolution capability for goat wool was finally obtained.

The ABMDFP exhibited high activity on cycloaddition of CO2 and transesterification reaction of EC, which was also suitable for various substrates. A possible mechanism of ring-opening of epoxide and activation of CO2 was proposed.

Bifunctional protic ionic liquids were prepared and they showed high activity for conversion of CO2 with epoxides at mild temperature (30–50 °C) and 1 bar CO2.