Abstract 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.

中文翻译：

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通过将微孔聚合物骨架填料与富含胺的纳米通道相结合，用于 CO2 分离的混合基质膜

摘要 基于膜的分离工艺可以提高分离效率，降低传统分离工艺对环境的危害和能源成本。具有广阔发展前景的混合基质膜（MMM）经常受到界面不相容性和填料基质中气体传输通道堵塞的限制。在这里，我们报告了一种新型高价金属诱导微孔聚合物 (HMMP-1) 填料，具有高密度的游离胺基团和优异的碱性稳定性。HMMP-1 纳米粒子被掺入聚乙烯胺 (PVAm) 以制备促进传输混合基质膜 (MMM)。由此产生的基于 HMMP-1 的 MMM 保持其孔隙结构，这主要是由于 HMMP-1 中的聚合物组分与 PVAm 之间的优异相容性。与许多其他报道的膜相比，具有适当孔径的富含胺的纳米通道允许通过优先吸附单分子表面扩散使 CO2 快速传输通过填料孔，从而导致高 CO2 渗透性和对 CO2/CH4、CO2/N2 和 CO2/H2 的出色分离性能. 一项技术经济评估表明 MMM 从燃烧后烟道气中捕获碳是可行的。