摘要
为了对多孔材料孔道结构实现调控,开展了UiO-66孔道调控及四甲苯的吸附分离研究。通过加入调节剂乙酸和改变配体种类,经溶剂热法合成5种UiO-66材料;经氮气吸附-脱附表征分析,获得UiO-66孔径分布和比表面积,发现乙酸的加入对UiO-66的孔径影响不大,而氨基的引入使孔径分布变窄,尺寸有所减小;通过静态吸附实验,以均四甲苯和连四甲苯的选择性为指标,研究了5种UiO-66材料对于均四甲苯和连四甲苯混合溶液的吸附性能,发现其对四甲苯的分离选择性主要归因于UiO-66不同的孔道结构。该研究为类似MOFs材料的合成、孔道调控,及对同分异构体的吸附分离性能的改变提供了参考。
In order to regulate the pore structure of porous materials,an experiment of pore structure regulation of UiO-66 and its adsorption of tetramethylbenzenes was designed accordingly.A series of UiO-66 materials were firstly synthesized by adding acetic acid regulator as and changing the types of ligands.Then the obtained materials were characterized through nitrogen adsorption-desorption characterization analysis.The pore size and its distribution and specific surface area were obtained accordingly.It was found that the addition of acetic acid has little effect on the pore size of UiO-66,while the introduction of amino acid narrowed the pore size distribution and reduced the size.Finally,the adsorption performance of different UiO-66 on durene and prehnitene were investigated by the static adsorption experiment in consideration of the selectivity of durene and prehnite.It shows that the selectivity is mainly influenced by the pore structure of UiO-66.This paper provides a reference for the modulation of the pore structure of materials similar to MOFs and then their corresponding adsorption performance of isomers.
作者
吴艳阳
孙晔
毛星星
彭阳峰
张相洋
徐宏勇
WU Yanyang a;SUN Ye;MAO Xingxing;PENG Yangfeng;ZHANG Xiangyang;XU Hongyong(School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;Laboratory and Facility Management Office,East China University of Science and Technology,Shanghai 200237,China)
出处
《实验室研究与探索》
CAS
北大核心
2023年第6期1-4,50,共5页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(22078093)。
