Pyrene-Based Hypercrosslinked Microporous Resins For Effective Co2 Capture

Two hydrophobic pyrene-based hypercrosslinked microporous resins (ZLYs) with intrinsic hydroxyl groups on the pore-walls have been prepared by condensation of 1,3,6,8-tetrakis(p-formylphenyl)pyrene (TFPPy) with phloroglucinol (L-1) or 1,5-dihydroxynaphthalene (L-2). The resulting porous networks exhibited high thermal stabilities and moderate Brunauer-Emmett-Teller surface area with 647 and 243 m(2) g(-1) respectively. The experiments showed that the weak interactions between CO2 and the intrinsic hydroxyl groups on the pore-wall of the resins could enhance CO2 uptake and CO2/CH4 selectivity. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47448.