李瑶, 季梦, 张明杰,等.MOF-5衍生多孔碳制备及其对CO₂捕集、CO₂/CH₄分离和甲醇吸附性能的研究[J].河南理工大学学报（自然科学版）,2026,45(3):104-114.

LI Y, JI M, ZHANG M J, WANG B B,et al.MOF-5-derived porous carbon: Preparation and applications for CO₂capture， CO₂/CH₄ separation and methanol adsorption[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(3):104-114.

MOF-5衍生多孔碳制备及其对CO₂捕集、CO₂/CH₄分离和甲醇吸附性能的研究

李瑶1, 季梦1, 张明杰1, 王彬彬2

1.河南理工大学 安全科学与工程学院，河南 焦作  454003；2.河南理工大学 材料科学与工程学院，河南 焦作  454003

摘要: 目的 为了有效解决能源紧张、环境污染等问题，开发一种用于CO₂捕集、CO₂/CH₄分离、甲醇吸附的多孔碳吸附剂，选取MOF-5作为碳前驱体和自牺牲模板，通过实验优化，并添加三聚氰胺为氮源，在1 000 ℃碳化温度下，成功制备出MOF-5衍生的氮掺杂多孔碳。  方法 系统分析活化时间对MOF-5衍生多孔碳的结构影响，以及三聚氰胺用量对多孔碳的最终孔结构、氮含量和氮种类的影响，结合碳样品的CO₂，CH₄以及甲醇的吸附等温线，分析CO₂捕集、CO₂/CH₄分离、甲醇吸附的影响因素。  结果 结果表明：NPC-3-20具有优异的CO₂吸附量及CO₂/CH₄选择性，归因于其最佳的狭小微孔（<1 nm）孔体积与表面氮物种N-5的高占比之间的协同作用。同时，NPC-3-20还具有优良的循环性和稳定性。MOF-5衍生多孔碳吸附剂对甲醇饱和蒸气的吸附量主要受比表面积影响，其中PC-3的比表面积最高，其对甲醇的吸附量最高。  结论 制备的多孔碳在减少碳排放，非常规天然气的升级，减少甲醇蒸气对环境和人的危害并促进其在工业中的广泛应用，都具有重要的意义。

关键词:MOF-5;多孔碳;CO₂捕集;CO₂/CH₄分离;甲醇吸附

doi:10.16186/j.cnki.1673-9787.2023120037

基金项目:国家自然科学基金-青年科学基金资助项目（42002164）；安全学科“双一流”建设培育项目（AQ20230707）

收稿日期:2024/12/13

修回日期:2025/05/20

出版日期: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/CH₄separation, 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/CH₄separation;methanol adsorption