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Ming-Ming Xu¹, Yu-Hui Liu¹, Xin Zhang¹

¹Beijing Key Laboratory for Green Catalysis and Separation and Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.

Inorganic chemistry

|July 21, 2023

概括

新的金属有机框架 (MOFs),BUT-308和BUT-309,显示出将烯从烯分离的潜力. BUT-309表现出独特的"灵活-坚固"特性,通过客户依赖的孔隙开放行为实现高效的烯/烯分离.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
吸附科学吸附科学

背景情况:

/分离在石化中至关重要,但由于相似的特性,很难.
金属有机框架 (MOF) 是轻碳化合物分离的有效吸附剂.
具有"灵活-坚固"特征的相互透的MOF提供了增强的选择性和吸收.

研究的目的:

开发新的水解稳定,相互透的MOF,用于烯/烯分离.
为了研究这些MOF在选择性气体吸附中的"灵活-坚固"行为.
通过吸附和突破性实验评估它们在烯/烯分离中的性能.

主要方法:

合成了两个相互透的MOFs,BUT-308和BUT-309.
气体吸附测量以确定吸附异温和孔隙行为.
列突破实验,以评估烯/烯混合物的分离效率.

主要成果:

BUT-309展示了"灵活-坚固"的吸附性行为,与烯相比烯的不同吸附等温.
在BUT-309中观察到依赖于客体的孔隙开放,这对于选择性C3H4/C3H6分离至关重要.
BUT-309有效地从二元气体混合物中去除了烯,在较低温度下具有最佳性能.

结论:

BUT-308和BUT-309是稳定的,相互透的MOF,具有显著的烯/烯分离潜力.
BUT-309是"灵活-坚固"MOF的典范,展示了选择性吸附的客体诱导孔动力学.
这项研究强调了"灵活坚固"MOF在挑战轻碳化合物分离的实用性.

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