Ionic liquid-decorated COF and its covalent composite aerogel for selective CO₂ adsorption and catalytic conversion

Abstract

Herein, we report an allyl-imidazolium ionic liquid decorated COF and its covalent composite COF@chitosan aerogel, which were shown to be excellent selective CO2 adsorbents and chemical conversion catalysts.

Imidazolium‐Functionalized Ionic Hypercrosslinked Porous Polymers for Efficient Synthesis of Cyclic Carbonates from Simulated Flue Gas

“…In addition, we performed the I C2 HCP‐5b‐catalyzed CO 2 cycloaddition with one typical epoxide, glycidyl phenyl ether, under mild conditions (atmospheric pressure and relatively low temperature of 90 °C). As shown in Table S7 in the Supporting Information, the yield was 81 % in the coupling of atmospheric CO 2 with glycidyl phenyl ether (entry 1), with a relatively large TON of 405 in comparison with previous systems under similar conditions . Cycloaddition of diluted CO 2 (0.15 bar) with glycidyl phenyl ether gave a moderate yield of 46 %, which increased to 80 % (TON: 400) and 90 % (TON: 450) in the presence of ZnCl 2 and ZnBr 2 , respectively.…”

Recent Advances on Imidazolium‐Functionalized Organic Cationic Polymers for CO2 Adsorption and Simultaneous Conversion into Cyclic Carbonates

“…As described in Scheme , COFs decorated with allylimidazolium‐based IL (denoted as COF‐IL) was prepared via a reversible Schiff‐base condensation reaction from allylimidazolium‐based IL derivatives (charged) and 1,3,5‐triformylphloroglucinol (neutral). The obtained COF‐IL showed good crystallinity, abundant micropores, moderate BET specific surface area (291 m 2 g −1 ), and large CO 2 uptake (106.04 cm 3 g −1 , 273 K) . Without TBAB assistance, COF‐IL showed the best catalytic performance under optimal conditions (3.0 mol % of catalyst, 80 °C, 24 h, 1 atm CO 2 ).…”

“… Schematic representation of the synthesis of COF‐IL via a multi‐component co‐polymerization strategy without a competitive polymerization …”

Adsorbents for Noxious Gas Sequestration: State of the Art

“…Polymers have also shown excellent reusability [75] and low heat of adsorption [77]. The works of [11,15,18,69,73,[78][79][80][81][82][83][84][85] highlight the use of polymers for CO 2 , SO 2 , NH 3, and H 2 S sequestration.…”