In this study, the successful preparation of defect‐free metal‐organic framework (MOF) membranes on the inner surface of ceramic hollow fibers and micromonoliths is reported for the first time. The prepared zeolitic imidazolite framework‐8 membranes exhibit impressively high propylene/propane (C₃H₆/C₃H₈) separation factor (up to 139), which is over an order of magnitude higher than that of traditional polymeric membranes. Such excellent results are achieved via a versatile convective circulation method, which eliminates the need of pumps for materials supply and is cost effective andenergy efficient. The MOF membranes prepared in this study show the potential in meeting stringent industrial requirements, as they have full protection from external impact during storage and module assembly, as well as high membrane surface area per volume, enabling compact devices for process intensification.

中文翻译：

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通过对流循环合成在密闭空间中制备的高丙烯选择性金属有机骨架膜

在这项研究中，首次成功地在陶瓷空心纤维和微整料的内表面成功制备了无缺陷的金属有机骨架（MOF）膜。制备的沸石咪唑沸石骨架8膜具有令人印象深刻的高丙烯/丙烷（C ₃ H ₆ / C ₃ H ₈分离系数（最大为139），比传统的聚合物膜高出一个数量级。通过通用的对流循环方法可以获得如此优异的结果，该方法无需泵来进行材料供应，并且具有成本效益和能源效率。这项研究中制备的MOF膜具有满足严格工业要求的潜力，因为它们在存储和模块组装过程中具有充分的保护免受外部影响，并且每单位体积的膜表面积高，从而使紧凑的设备可用于工艺强化。