中南大学学报（自然科学版）2025，Vol.56Issue(12)：5001-5014,14.DOI:10.11817/j.issn.1672-7207.2025.12.006
气氛调控下MIL-101(Fe)衍生炭材料的制备及Hg0脱除机理研究
Study on preparation of MIL-101(Fe)-Derived carbon materials under atmospheric regulation and mechanism of Hg0 removal
摘要
Abstract
In view of the problem that existing MOFs materials cannot achieve efficient removal of Hg0,this paper,based on the characteristics that MIL-101(Fe)itself contained unsaturated Fe metal centers and abundant oxygen-containing functional groups,which had strong oxidizability with CO2 and O2 atmospheres,used MIL-101(Fe)metal-organic framework as a precursor to prepare a series of MIL-101(Fe)-derived carbon materials by regulating parameters such as carbonization temperature and volume fraction.The experiment explored the influence of carbonization conditions on the Hg0 removal characteristics,and on this basis,established the structure-activity relationship between the physical and chemical properties of the materials and their mercury removal performance,so as to reveal the Hg0 removal mechanism.The results show that MIL-101(Fe)-6%CO2-500℃-3 h and MIL-101(Fe)-6%O2-500℃-30 min samples have excellent mercury removal performance.This is because Fe3+present in Fe oxides in the adsorbent directly participates in the oxidation reaction of Hg0.Compared with the samples prepared under N2 atmosphere,the samples obtained under oxygen-containing atmospheres exhibit stronger mercury removal performance due to the additional generation of Fe2O3 with stronger oxidizability.However,an excessively high volume fraction promotes violent oxidation reaction accompanied by the release of a large amount of heat,which seriously damages the original pore structure of the materials.In addition,an overly long pyrolysis time also exacerbates the collapse on the material structure.This study provides theoretical support and practical reference for improving the Hg0 removal efficiency of MIL-101(Fe)-derived carbon materials.关键词
MIL-101(Fe)/衍生炭材料/汞脱除Key words
MIL-101(Fe)/derived carbon materials/mercury removal分类
资源环境引用本文复制引用
范楚浩,贾里,程鹏,赵家好,郑玉斓,武亚文,于跃,郭学茂..气氛调控下MIL-101(Fe)衍生炭材料的制备及Hg0脱除机理研究[J].中南大学学报（自然科学版）,2025,56(12):5001-5014,14.基金项目
山西省基础研究项目(202303021212043)(Project(202303021212043)supported by the Fundamental Research Program of Shanxi Province) （202303021212043）
