Synthesis of a Carbazole-Based Nanoporous Organic Polymer for Efficient Adsorption/Separation of C₂H₂ and CO₂

Abstract

The development of nanoporous organic polymers (NOPs) for the adsorption/separation of acetylene (C 2 H 2 ) and carbon dioxide (CO 2 ) poses significant challenges due to their similar physical and chemical properties. This paper presents the synthesis of a carbazole-based nanoporous organic polymer (CNOP-6) through a facile Friedel−Crafts reaction using 3,6-di(9carbazolyl)-9-phenylcarbazole as the monomer. Remarkably, the specific surface area of CNOP-6 is up to 1334 m 2 •g −1 . CNOP-6 demonstrates a C 2 H 2 adsorption capacity of 80.2 cm 3 •g −1 at 298 K and 100 kPa. The results of ideal adsorbed solution theory and breakthrough curves unequivocally demonstrate the potential of CNOP-6 as an exceptional adsorbent for the purification of C 2 H 2 from CO 2 .

Highly Selective SO2 Capture by Triazine-Functionalized Triphenylamine-Based Nanoporous Organic Polymers

“…Nanoporous organic polymers (NOPs), constructed from various organic building blocks using different reactions, have garnered significant interest due to their large specific surface area, diverse building blocks, flexible construction reactions, excellent properties, and potential applications. − Chemists and materials scientists have been interested in exploring the potential applications of NOPs for SO 2 capture. Ma et al synthesized a porous organic framework (POF) and investigated its adsorption uptakes for SO 2 and CO 2 .…”