The capture and simultaneous fixation of CO2 in the simulation of fuel gas by bifunctionalized ionic liquids

A strategy for the capture and simultaneous fixation of CO 2 in the simulation of fuel gas by bifunctionalized ionic liquids (ILs) is reported. High conversion and good selectivity to cyclic carbonate were achieved directly from CO 2 of low concentration (10%) and at high temperature (100 °C) by making use of ILs with multiple roles as efficient absorbents for CO 2 capture and good catalysts for CO 2 utilization. A small amount of water benefits the fixation of CO 2 , making this reaction more applicable to condition of fuel gas. This method using bifunctionalized ionic liquid eliminates the energy penalty in CO 2 cooling and desorption step and opens a door to develop energy-saving and cost-effective CO 2  utilization, and thus holds promising potential in practical carbon capture and utilization.