A nanoporous organic polymer using 1, 3-dibromoadamantane as a crosslinker for adsorption/separation of benzene and cyclohexane

Abstract

The development of nanoporous organic polymers with cycloaliphatic components for effective benzene (Bz) and cyclohexane (Cy) adsorption/separation poses a significant challenge. This work focuses on synthesizing NOP-Ad-1, a nanoporous organic polymer derived from a Friedel–Crafts reaction between cycloaliphatic 1,3-dibromadantane and aromatic hexaphenylbenzene. At 298 K and P/P₀ = 0.95, NOP-Ad-1 can uptake 989 mg g⁻¹ benzene and 441 mg g⁻¹ cyclohexane. Moreover, as the benzene vapor ratio increased from 20% to 80%, the Bz/Cy selectivity of NOP-Ad-1 gradually decreased from 1.75 to 1.24. These findings highlight the potential application of NOP-Ad-1 in the adsorption/separation of Bz/Cy mixtures.