LI Y, JI M, ZHANG M J, WANG B B,et al.MOF-5-derived porous carbon: Preparation and applications for CO₂ capture， CO₂/CH₄ separation and methanol adsorption[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(3):104-114.

doi:10.16186/j.cnki.1673-9787.2023120037

Received:2024/12/13

Revised:2025/05/20

Published:2026/04/28

MOF-5-derived porous carbon: Preparation and applications for CO₂ capture， CO₂/CH₄ separation and methanol adsorption

Li Yao1, Ji Meng1, Zhang Mingjie1, Wang Binbin2

1.College of Safety Science and Engineering， Henan Polytechnic University， Jiaozuo  454003， Henan， China；2.School of Materials Science and Engineering， Henan Polytechnic University， Jiaozuo  454003， Henan， China

Abstract: Objectives To address energy shortages and environmental pollution, a porous carbon adsorbent was developed for CO₂ capture， CO₂/CH₄ separation, and methanol adsorption. MOF-5 was used as both a carbon precursor and a self-sacrificial template.  Nitrogen-doped porous carbon derived from MOF-5 was successfully synthesized at a carbonization temperature of 1 000 ℃ using melamine as the nitrogen source.  Methods The effects of activation time on the structure of MOF-5-derived porous carbon， as well as the influence of melamine dosage on pore structure， nitrogen content， and nitrogen species， were systematically investigated. The adsorption isotherms of CO₂， CH₄， and methanol were analyzed to evaluate the factors affecting CO₂ capture， CO₂/CH₄ separation， and methanol adsorption.  Results NPC-3-20 exhibits excellent CO₂ adsorption capacity and CO₂/CH₄ selectivity， which can be attributed to the synergistic effect between the optimal volume of narrow micropores （<1 nm） and a high proportion of surface nitrogen species （N-5）. In addition， NPC-3-20 shows excellent cycling performance and stability. The methanol adsorption capacity of MOF-5-derived porous carbon is mainly governed by the specific surface area. Among all samples， PC-3 exhibits the highest specific surface area and the best methanol adsorption performance.  Conclusions The prepared porous carbon materials play an important role in reducing carbon emissions，  upgrading unconventional natural gas， mitigating the environmental and health impacts of methanol vapor， and promoting industrial applications.

Key words:MOF-5;porous carbon;CO₂ capture;CO₂/CH₄ separation;methanol adsorption