渗透
膜
选择性
乙烯
离子液体
氮化硼
化学工程
材料科学
离子键合
硼
纳米技术
化学
离子
有机化学
催化作用
生物化学
工程类
作者
Haozhen Dou,Bin Jiang,Mi Xu,Zhen Zhang,Guobin Wen,Feifei Peng,Aiping Yu,Zhengyu Bai,Yongli Sun,Na Yang,Zhongyi Jiang,Zhongwei Chen
标识
DOI:10.1002/anie.201907773
摘要
A BN membrane with a distinct nanoconfinement effect toward efficient ethylene/ethane separation is presented. The horizontal and inclined self-assembly of 2D BN nanosheets endow the BN membrane with abundant percolating nanochannels, and these nanochannels are further decorated by reactive ionic liquids (RILs) to tailor their sizes as well as to achieve nanoconfinement effect. The noncovalent interactions between RIL and BN nanosheets favor the ordered alignment of the cations and anions of RIL within BN nanochannels, which contributes to a fast and selective ethylene transport. The resultant membranes exhibit an unprecedented separation performance with superhigh C2 H4 permeance of 138 GPU and C2 H4 /C2 H6 selectivity of 128 as well as remarkably improved long-term stability for 180 h, outperforming reported state-of-the-art membranes.
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