低碳化学与化工2025，Vol.50Issue(4)：90-97,106,9.DOI:10.12434/j.issn.2097-2547.20240315
吲哚基多孔有机聚合物对碘蒸气的吸附性能
Iodine vapor adsorption performance of indole-based porous organic polymers
摘要
Abstract
The development of highly efficient radioactive iodine adsorption materials is of great significance for the disposal of nuclear waste and the safe utilization of nuclear energy.Two kinds of porous organic polymers were synthesized via Friedel-Crafts alkylation reaction using 2-phenylindole(2-PhIn)and 1-methyl-2-phenylindole(1-Me-2-PhIn)as the building units,formaldehyde dimethyl acetal(FDA)as the external cross-linker and anhydrous FeCl3as the catalyst.The iodine vapor adsorption properties and structure-activity relationships of the polymers were investigated.It is found that the steric hindrance effect of methyl group has a negative impact on the polymerization process,resulting in polymers with poor pore texture.The iodine adsorption properties of polymers are influenced by both the adsorption sites and the pore structures.1-Me-2-PhIn-P exhibits a higher iodine adsorption capacity(2.99 g/g),which is superior to commercial activated carbon.During the initial iodine vapor adsorption process,chemisorption plays a dominant role,where I2 interacts with the π-electron-rich polymer framework through Lewis acid/base interactions to form polyiodide anions(I3-and I5-).Furthermore,the larger average pore size facilitates the enrichment of guest iodine species.Additionally,1-Me-2-PhIn-P adsorbed with iodine vapor can be regenerated at 125 ℃.After 5 cycles,the iodine adsorption capacity and adsorption efficiency can still be maintained at 1.81 g/g and 60.5％,respectively.Physisorption plays a major role in the cycling experiments.This research can offer new references for the development of gaseous radioactive iodine adsorption materials.关键词
吲哚/多孔有机聚合物/碘蒸气/吸附性能Key words
indole/porous organic polymer/iodine vapor/adsorption performance分类
化学工程引用本文复制引用
于静文,李忠,武蒙蒙,冯宇,米杰..吲哚基多孔有机聚合物对碘蒸气的吸附性能[J].低碳化学与化工,2025,50(4):90-97,106,9.基金项目
国家自然科学基金(21978188). （21978188）
