首页|Novel triazine carbonyl polymer with large surface area and its polyethylimine functionalization for CO2 capture
Novel triazine carbonyl polymer with large surface area and its polyethylimine functionalization for CO2 capture
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NSTL
Elsevier
? 2022 The Korean Society of Industrial and Engineering ChemistryIncorporating high density of nitrogen and amine sites into a proper porous structure is a major consideration for developing CO2 adsorbents. Herein, a novel triazine carbonyl polymer (TCP) was synthesized via one pot Friedel-Crafts reaction and then was post-synthetically functionalized with polyethylimine (PEI) to develop TCP-PEI. The successful syntheses of TCP and TCP-PEI were verified by various characterizations, including FT-IR, XPS, SEM/EDS, and N2 adsorption isotherms at 77 K. The pristine TCP displayed hierarchical pores and a significantly large BET surface area (1940 m2/g), which verified its propriety of being utilized as a support for PEI functionalization. As reasoned, TCP-PEI showed significantly stronger CO2 adsorption than the pristine TCP because of the special interaction between CO2 and PEI. As a result, TCP-PEI exhibited considerably higher CO2/N2 and CO2/CH4 selectivities than TCP. Moreover, it showed almost identical CO2 adsorption isotherms for 5 consecutive cycles. Developing covalent porous polymers with both triazine and carbonyl groups and follow-up PEI functionalization would be an efficient strategy for developing CO2 adsorbents.
CO2 adsorptionPolyethylimine functionalizationPorous organic polymersTriazine polymers
Ravi S.、Choi Y.、Park W.、Han H.H.、Bae Y.-S.、Wu S.、Xiao R.
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Department of Chemical and Biomolecular Engineering Yonsei University
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University
NSTL
Elsevier
