乙烯
吸附
金属有机骨架
选择性
体积热力学
巴(单位)
多孔性
化学
材料科学
化学工程
有机化学
催化作用
复合材料
热力学
物理
工程类
气象学
作者
Cheng‐Xia Chen,Zhang‐Wen Wei,Tony Pham,Pui Ching Lan,Lei Zhang,Katherine A. Forrest,Sha Chen,Abdullah M. Al‐Enizi,Ayman Nafady,Cheng‐Yong Su,Shengqian Ma
标识
DOI:10.1002/anie.202100114
摘要
Abstract Herein, a dynamic spacer installation (DSI) strategy has been implemented to construct a series of multifunctional metal—organic frameworks (MOFs), LIFM‐61/31/62/63, with optimized pore space and pore environment for ethane/ethylene separation. In this respect, a series of linear dicarboxylic acids were deliberately installed in the prototype MOF, LIFM‐28, leading to a dramatically increased pore volume (from 0.41 to 0.82 cm 3 g −1 ) and reduced pore size (from 11.1×11.1 Å 2 to 5.6×5.6 Å 2 ). The increased pore volume endows the multifunctional MOFs with much higher ethane adsorption capacity, especially for LIFM‐63 (4.8 mmol g −1 ), representing nearly three times as much ethane as the prototypical counterpart (1.7 mmol g −1 ) at 273 K and 1 bar. Meanwhile, the reduced pore size imparts enhanced ethane/ethylene selectivity of the multifunctional MOFs. Theoretical calculations and dynamic breakthrough experiments confirm that the DSI is a promising approach for the rational design of multifunctional MOFs for this challenging task.
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