In this research, novel magnetic mixed matrix membranes (MMMs) are developed using polysulfone (PSf) containing of carbonyl iron powders (CIPs) for oxygen/nitrogen separation. In order to create preferential permeation pathways for oxygen across the MMMs, the membrane formation is accomplished with the aid of an external magnetic field. The required magnetic force to control particle dispersion within the membrane is simulated using ANSYS Maxwell software. Scanning electron microscopy images reveal that CIPs are aligned in the membrane matrix according to the direction of applied magnetic field; while successful synthesis of magnetic membranes is confirmed by vibrating sample magnetometer. In addition, a novel gas permeation unit is constructed to investigate the effect of CIP loading (1−10 wt.%) on the gas separation performance of MMMs in the presence of various magnetic fields. The magnetic field -aligned CIP/PSf membranes present higher permeability and lower selectivity than both un-aligned CIP/PSf and neat PSf membranes. In addition, O₂ permeability and (O₂/N₂) selectivity of magnetic field -aligned CIP/PSf membranes are considerably improved by applying the magnetic field during permeation tests. In the presence of 570 m T magnetic field, O₂ permeability and selectivity of MMMs containing 10 wt.% CIP improved by 436 % and 41 % respectively, compared to the pure PSf membrane.

在这项研究中，使用含有羰基铁粉（CIP）的聚砜（PSf）进行氧/氮分离，开发了新型磁性混合基质膜（MMM）。为了产生穿过MMM的氧气的优先渗透途径，借助于外部磁场来完成膜的形成。使用ANSYS Maxwell软件模拟了控制颗粒在膜内分散所需的磁力。扫描电子显微镜图像显示，CIPs根据施加的磁场方向在膜基质中排列；振动样品磁力计证实了磁性膜的成功合成。此外，构造了一种新型的气体渗透装置来研究CIP负载的影响（1-10 wt。MMM在各种磁场存在下的气体分离性能）。磁场对准的CIP / PSf膜比未对准的CIP / PSf和纯PSf膜具有更高的渗透率和更低的选择性。另外，O通过在渗透测试过程中施加磁场，可以大大提高磁场对准的CIP / PSf膜的₂渗透率和（O ₂ / N ₂）选择性。与纯PSf膜相比，在570 m T磁场存在下，含10 wt。％CIP的MMM的O ₂渗透性和选择性分别提高了436％和41％。