Highly Efficient Propyne/Propylene Separation in a “Flexible-Robust” and Hydrolytically Stable Cu(II)-MOF
作者:Ming-Ming Xu、Yu-Hui Liu、Xin Zhang、Jia-Ao Lv、Rui-Chao Zhao、Lin-Hua Xie、Jian-Rong Li
DOI:10.1021/acs.inorgchem.3c01285
日期:2023.8.7
similar physical properties and close molecular sizes. Metal–organic frameworks (MOFs) are a class of promising adsorbents for light hydrocarbon separations. Among them, the so-called “flexible-robust” MOFs combine the advantages of flexibility and rigidity in structure and could show enhanced gas separation selectivity as well as improved gas uptake at low pressure. Interpenetrated MOFs offer a platform
丙炔/丙烯的分离在石化工业中很重要,但由于它们相似的物理性质和接近的分子尺寸而具有挑战性。金属有机框架(MOF)是一类有前景的轻质烃分离吸附剂。其中,所谓的“柔性-鲁棒”MOF在结构上结合了柔性和刚性的优点,可以表现出增强的气体分离选择性以及改善的低压气体吸收率。互穿MOFs提供了一个平台,可以根据气体吸附过程中的子网位移来探索MOFs的“灵活鲁棒”特性。在此,我们提出了两种水解稳定的 MOF(BUT-308和BUT-309),它们具有互穿结构和令人着迷的丙炔/丙烯分离性能。BUT-308由互穿的2D Cu(BDC-NH 2 )BPB层组成(H 2 BDC-NH 2 = 2-氨基苯-1,4-二甲酸;BPB = 1,4-双(4-吡啶基)苯) ,而BUT-309由双重互穿 3D 柱层 Cu 2 (BDC-NH 2 ) 2 (BPB-CF 3 ) 网组成 (BPB-CF 3 = 2-三氟甲基-1