Highly Efficient Carbon Dioxide Capture With A Porous Organic Polymer Impregnated With Polyethylenimine

Various amounts of a branched polyethylenimine are impregnated into a porous aromatic framework. PEI (40 wt%) subset of PAF-5 shows exceptionally high capacity and selectivity of CO2 adsorption at 313 K. The material also displays fast adsorption/desorption kinetics and low energy penalty for regeneration in addition to water stability.