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Exploration of porous metal–organic frameworks for gas separation and purification
Coordination Chemistry Reviews ( IF 20.6 ) Pub Date : 2017-10-09 , DOI: 10.1016/j.ccr.2017.09.027
Rui-Biao Lin , Shengchang Xiang , Huabin Xing , Wei Zhou , Banglin Chen

As a new generation of porous materials, metal–organic frameworks (MOFs, also known as porous coordination polymers) have shown great promise for gas separation and purification because of their unique pore structures and surfaces for their differential recognition of small gas molecules. In this review article, we summarize our ongoing research endeavors to explore and discover microporous MOFs for gas separation and purification. We have developed several approaches to systematically tune the pores and to immobilize functional sites, including (1) the primitive cubic net of interpenetrated microporous MOFs from the self-assembly of the paddle-wheel clusters, M2(CO2)4 (M = Cu2+, Zn2+…), with two types of organic dicarboxylic acid and pillar bidentate linkers; (2) microporous mixed-metal–organic frameworks (M′MOFs) through the metallo-ligands, and (3) microporous MOFs with dual functionalities. Such efforts have enabled us to make some breakthroughs on microporous MOFs for gas separation and purification, as demonstrated in the gas chromatographic separation of hexane isomers, kinetic D2/H2 separation, acetylene/ethylene separation, carbon dioxide capture, C2H2/CO2 and C3H4/C3H6 separation. Our group is one of the first groups who have envisioned the practical promise of microporous MOFs for the industrial gas separation and examined their separation capacities and efficiency using the fixed-bed adsorption and/or breakthrough experiments. Some of the very important and representative examples of these microporous MOFs for diverse gas separation and purification are highlighted in this review.



中文翻译:

探索用于气体分离和纯化的多孔金属有机框架

作为新一代的多孔材料,金属有机骨架(MOF,也称为多孔配位聚合物)因其独特的孔结构和表面可以区分小气体分子而显示出了巨大的前景,可用于气体分离和纯化。在这篇评论文章中,我们总结了我们正在进行的研究工作,以探索和发现用于气体分离和纯化的微孔MOF。我们已经开发了几种方法来系统地调节孔并固定功能位,包括(1)桨轮簇的自组装M 2(CO 24(M =铜2+,锌2+…),具有两种有机二羧酸和支柱二齿连接基;(2)通过金属配体的微孔混合金属有机骨架(M'MOF),以及(3)具有双重功能的微孔MOF。这些努力使我们在用于气体分离和纯化的微孔MOF上取得了一些突破,这在己烷异构体的气相色谱分离,动力学D 2 / H 2分离,乙炔/乙烯分离,二氧化碳捕集,C 2 H 2中得到了证明。/ CO 2和C 3 H 4 / C 3 H 6分离。我们的小组是最早设想将微孔MOF用于工业气体分离的实际方法,并使用固定床吸附和/或穿透实验研究了其分离能力和效率的第一批成员之一。这些微孔MOF用于多种气体分离和纯化的一些非常重要且具有代表性的例子在本综述中得到了重点介绍。

更新日期:2018-08-17
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