Development of CO2 separation membranes (2) -: Facilitated transport membrane

The facilitated transport membrane, which is immobilized K2CO3 aqueous solution by polymer gel, was studied to improve its stability. This polymer gel membrane preserved high selectivity for about six months under a high humid gas mixture, imitative of combustion gas. K2CO3 aqueous solution played an important part in keeping the membrane wet, and the polymer gel played an important role in maintaining the membrane's stability. The polymer gel membrane has potential for practical use in the recovery of CO2 from combustion gas.