化工学报2025，Vol.76Issue(5)：2230-2240,11.DOI:10.11949/0438-1157.20241125
基于柔性MOFs的磁响应复合材料及其丙烯吸附性能研究
Study on magnetically responsive composite materials based on flexible MOFs and their propylene adsorption performance
摘要
Abstract
Magnetic-induced temperature-swing adsorption has attracted much attention due to its convenient operation,fast heat generation,and short heat transfer distance.The energy efficiency of this method is determined by the performance of adsorbents in a magnetic field.The current adsorbent material performance is difficult to adjust and cannot fully exert its separation performance in magnetically induced temperature swing adsorption.In this paper,a magnetically responsive flexible adsorbent material MN@CPL-1 was constructed and applied to propylene capture.These composite adsorbents were obtained by in-situ synthesis of Fe3 O4 nanoparticles with flexible MOFs.When the alternating magnetic field is turned off,MN@CPL-1 has an open pore structure which can effectively captures propylene molecules.When the alternating magnetic field is turned on,the heat induced by magnetism can be rapidly transferred from Fe3 O4 nanoparticles to CPL-1,causing local rotation of its framework and promoting the release of propylene molecules.The working capacity of the optimal sample in the temperature range of 10-30℃(22.5 cm3·g-1)is superior to various classic propylene adsorbents,such as MIL-101(14.45 cm3·g-1),MAC-4(13.00 cm3·g-1),and zeolite 5A(4.14 cm3·g-1).Under the control of an external magnetic field,the uptake swing of the optimal sample reaches 65.9％.After 5 cycles closure/opening of alternating magnetic field for adsorption and desorption,the composite maintained good reusability.The coupling of magnetic-induced heat generation and flexible structure of adsorption materials improves the adsorption efficiency.关键词
吸附剂/吸附/分离/磁感应加热/变温吸附Key words
adsorbents/adsorption/separation/magnetic-induced heating/temperature-swing adsorption分类
化学化工引用本文复制引用
谈朋,李雪梅,刘晓勤,孙林兵..基于柔性MOFs的磁响应复合材料及其丙烯吸附性能研究[J].化工学报,2025,76(5):2230-2240,11.基金项目
国家自然科学基金项目(22378186) （22378186）
国家杰出青年科学基金项目(22125804) （22125804）
