Synthesis of porous aromatic framework with Friedel-Crafts alkylation reaction for CO2 separation

Porous aromatic framework (PAF-8) derived from tetrahedral monomer was successfully synthesized by the Friedel-Crafts alkylation reaction. PAF-8 possessed high stability and high surface areas (785 m2 g−1), as well as good CO2 and CH4 sorption abilities. Meanwhile, PAF-8 exhibited great performance in N2-CO2 and CH4-CO2 chromatographic separation, which indicated PAF-8 a potential candidate for CO2 separation.