Multi-hydroxyl-containing porous organic polymers based on phenol formaldehyde resin chemistry with high carbon dioxide capture capacity

Abstract

Three multi-hydroxyl groups containing porous organic polymers (PFPOP-1–3) based on phenol formaldehyde resin chemistry have been reported. FT-IR and solid-state ¹³C NMR spectra confirm the polymerization between 1,2,4,5-tetrahydroxyl benzene and trialdehydes, and SEM as well as TEM observations reveal the spherical morphologies of PFPOPs. Nitrogen sorption isotherm measurements suggest that PFPOPs possess considerable surface area with narrow pore size distribution in micropore region. On the basis of their microporous properties and hydroxyl-rich structures, PFPOPs present high potentials in the applications for small gas adsorption and separation. Consequently, PFPOP-3 shows a high carbon dioxide capture capability (17.3 wt% at 273 K and 1.0 bar) and considerable CO₂/N₂ selectivity (56.5, IAST at 273 K and 1.0 bar).