Design and Synthesis of N-Doped Porous Carbons for the Selective Carbon Dioxide Capture under Humid Flue Gas Conditions

Mahmoud M. Abdelnaby*, Mansur Aliyu, Medhat A. Nemitallah, Ahmed M. Alloush, El Hassan M. Mahmoud, Khaled M. Ossoss, Mostafa Zeama, Moataz Dowaidar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The design of novel porous solid sorbents for carbon dioxide capture is critical in developing carbon capture and storage technology (CCS). We have synthesized a series of nitrogen-rich porous organic polymers (POPs) from crosslinking melamine and pyrrole monomers. The final polymer’s nitrogen content was tuned by varying the melamine ratio compared to pyrrole. The resulting polymers were then pyrolyzed at 700 °C and 900 °C to produce high surface area nitrogen-doped porous carbons (NPCs) with different N/C ratios. The resulting NPCs showed good BET surface areas reaching 900 m2 g−1. Owing to the nitrogen-enriched skeleton and the micropore nature of the prepared NPCs, they exhibited CO2 uptake capacities as high as 60 cm3 g−1 at 273 K and 1 bar with significant CO2/N2 selectivity. The materials showed excellent and stable performance over five adsorption/desorption cycles in the dynamic separation of the ternary mixture of N2/CO2/H2O. The method developed in this work and the synthesized NPCs’ performance towards CO2 capture highlight the unique properties of POPs as precursors for synthesizing nitrogen-doped porous carbons with a high nitrogen content and high yield.

Original languageEnglish
Article number2475
Issue number11
StatePublished - Jun 2023

Bibliographical note

Publisher Copyright:
© 2023 by the authors.


  • carbon dioxide capture
  • humid flue gas
  • nitrogen-doped carbons
  • porous carbons
  • porous polymer

ASJC Scopus subject areas

  • General Chemistry
  • Polymers and Plastics


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