微型多孔材料
乙炔
选择性
材料科学
气体分离
二氧化碳
多孔性
吸附
化学工程
氢
选择性吸附
碳纤维
吡啶
化学
有机化学
催化作用
复合数
复合材料
生物化学
膜
工程类
作者
Yunbin Li,Xue Wang,Hao Zhang,Lei He,Jiali Huang,Wuji Wei,Zhen Yuan,Zhile Xiong,Huadan Chen,Shengchang Xiang,Banglin Chen,Zhangjing Zhang
标识
DOI:10.1002/anie.202311419
摘要
Abstract The separation of acetylene (C 2 H 2 ) from carbon dioxide (CO 2 ) is a very important but challenging task due to their similar molecular dimensions and physical properties. In terms of porous adsorbents for this separation, the CO 2 ‐selective porous materials are superior to the C 2 H 2 ‐selective ones because of the cost‐ and energy‐efficiency but have been rarely achieved. Herein we report our unexpected discovery of the first hydrogen bonded organic framework (HOF) constructed from a simple organic linker 2,4,6‐tri(1 H ‐pyrazol‐4‐yl)pyridine (PYTPZ) (termed as HOF‐FJU‐88) as the highly CO 2 ‐selective porous material. HOF‐FJU‐88 is a two‐dimensional HOFs with a pore pocket of about 7.6 Å. The activated HOF‐FJU‐88 takes up a high amount of CO 2 (59.6 cm 3 g −1 ) at ambient conditions with the record IAST selectivity of 1894. Its high performance for the CO 2 /C 2 H 2 separation has been further confirmed through breakthrough experiments, in situ diffuse reflectance infrared spectroscopy and molecular simulations.
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