POS9-0313
Preparation of Nitrogen-Doped Porous Carbon from Chemically Modified Lignin for Efficient CO2 Capture
Topic
S9. Polymer Technology for Sustainability
When and Where
Oct 1, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Jinkee HONG
Ki Su KIM
Presenter(s)
Nattawut Rodtuk (Inha university)
Co-Author(s)
Abstract
A bio-based nitrogen-doped porous carbon adsorbent was synthesized from lignin for efficient CO2 capture. Phenolation increased the α-carbon reactive sites adjacent to phenolic hydroxyl groups from 1.84 to 9.86 mmol g-1, enabling the successful incorporation of hexamethylenediamine (HMDA) into the lignin structure via the Mannich reaction. The resulting aminated lignin was carbonized to produce nitrogen-doped porous carbon. The prepared materials were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and Brunauer–Emmett–Teller (BET) analysis. The results confirmed the successful formation of nitrogen-doped porous carbon with well-developed porous structures and nitrogen-containing functional groups. The CO2 adsorption capacity increased significantly from 0.77 to 2.60 mmol g-1 owing to the synergistic effects of enhanced porosity and nitrogen-containing functional groups. These findings demonstrate a sustainable route for converting lignin into high-performance CO2 adsorbents.
