Wang Bo, Qiao Zhihua, Xu Jiayou, Wang Jixiao, Liu Xinlei, Zhao Song, Wang Zhi, Guiver Michael D
Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China.
Adv Mater. 2020 Jun;32(22):e1907701. doi: 10.1002/adma.201907701. Epub 2020 Apr 24.
Ultrathin unobstructed gas transport channels through the membrane selective layer are constructed in mixed matrix membranes (MMMs) by using gravity-induced interface self-assembly of poly(vinylamine) and polymer-modified MIL-101(Cr). For CO /N (15/85 by volume) mixed gas, the MMMs achieve a high CO permeance of 823 gas permeation units and CO /N selectivity of 242 at 0.5 MPa. Based on economic analyses, a two-stage membrane process can achieve gas separation and economic targets.
通过利用聚乙烯胺和聚合物改性的MIL-101（Cr）的重力诱导界面自组装，在混合基质膜（MMM）中构建了穿过膜选择层的超薄无阻气体传输通道。对于CO₂/N₂（体积比15/85）混合气体，该混合基质膜在0.5MPa下实现了823气体渗透单位的高CO₂渗透率和242的CO₂/N₂选择性。基于经济分析，两级膜工艺可以实现气体分离和经济目标。
