膜
微型多孔材料
化学工程
聚合物
渗透
材料科学
烟气
气体分离
纳米颗粒
高分子化学
胺气处理
吸附
化学
纳米技术
复合材料
有机化学
渗透
生物化学
工程类
作者
Ye Yuan,Zhihua Qiao,Jiayou Xu,Jixiao Wang,Song Zhao,Xingzhong Cao,Zhi Wang,Michael D. Guiver
标识
DOI:10.1016/j.memsci.2020.118923
摘要
Membrane-based separation processes can improve separation efficiency and reduce the environmental hazards and energy costs of traditional separation processes. Mixed matrix membranes (MMMs) with broad development prospects are frequently restricted by interfacial incompatibility and the blockage of gas transport channels in the filler matrix. Here, we report a new type of high-valence metal-induced microporous polymer (HMMP-1) filler, with a high density of free amine groups, and having excellent alkaline stability. The HMMP-1 nanoparticles were incorporated into polyvinylamine (PVAm) to prepare facilitated transport mixed matrix membranes (MMMs). The resulting HMMP-1 based MMMs maintain their pore aperture structure, which is mainly due to the excellent compatibility between the polymer component in the HMMP-1 and PVAm. Amine-rich nanochannels with appropriate pore size allow rapid CO2 transport through the filler pores by preferential adsorption monomolecular surface diffusion, leading to high CO2 permeance and excellent separation performance for CO2/CH4, CO2/N2 and CO2/H2 compared with many other reported membranes. A techno-economic evaluation suggests that the MMM is feasible for carbon capture from post-combustion flue gas.
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