Highly propylene-selective asymmetric mixed-matrix membranes by polymer phase-inversion in sync with in-situ ZIF-8 formation
Highly propylene-selective asymmetric mixed-matrix membranes by polymer phase-inversion in sync with in-situ ZIF-8 formation
复制标题
通过与原位 ZIF-8 形成同步的聚合物相转化制备高度丙烯选择性不对称混合基质膜
DOI：
10.1016/j.cej.2023.143048
复制
发表时间：
2023
影响因子：
15.1
通讯作者：
Jeong, Hae-Kwon
中科院分区：
文献类型：
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作者：
Hua, Yinying;Park, Sunghwan;Choi, Gyeong Min;Jung, Ho Jin;Cho, Kie Yong;Jeong, Hae-Kwon
虽然混合基质膜（MMM）已被广泛研究，但其商业应用受到科学和工程挑战的阻碍。在此，我们报告了一种创新的一步MMM制造方法，该方法可以通过克服当前的大多数挑战来实现MMM的商业化，因为它能够以可扩展的方式快速形成高性能的非对称MMM。被称为与金属有机框架（MOF）形成同步的相转化（PIMOF）的方法涉及经历相转化的聚合物膜和同时在聚合物内部原位形成的ZIF-8纳米颗粒。所得的MMM显示出出乎意料的高C3 H6/C3 H8分离性能（C3 H6渗透率约为100%）。7.5 GPU和C_3H_6/C_3H_8的分离因子。107），这主要归因于高效ZIF-8负载（>50重量%）和通过受限的连接体运动的异常小的亚5 nm ZIF-8填料纳米颗粒的增强的分子筛效应。
Although mixed-matrix membranes (MMMs) have been extensively studied, their commercial applications have been hampered by scientific and engineering challenges. Herein, we report an innovative one-step MMM fabrication method that can put the commercialization of MMMs forward by overcoming most of the current challenges because it enables the rapid formation of high-performance asymmetric MMMs in a scalable manner. The method termed phase-inversion in sync with metal–organic framework (MOF) formation (PIMOF) involves a polymer film undergoing phase inversion and simultaneously ZIF-8 nanoparticles formingin-situinside the polymer. The resulting MMMs show unexpectedly high C3H6/C3H8separation performances (C3H6permeance of ca. 7.5 GPU and C3H6/C3H8separation factor of ca. 107), which is attributed mostly to the high effective ZIF-8 loading (>50 wt%) and the enhanced molecular sieving effect of the unusually small sub-5 nm ZIF-8 filler nanoparticles by restricted linker motion.