Abstract This work focuses on dip coating and further phase inversion prepared polysulfone/LTA zeolite mixed matrix membranes (MMMs). The Linde Type A (LTA) zeolite synthesized under hydrothermal conditions by the organic free method was introduced as fillers at 10 and 20 wt.% loadings into the polysulfone polymer matrix to obtain MMMs. The x-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis indicated that the as-synthesized LTA zeolite samples were crystalline and mainly composed of crystal of predominantly cubic shape. Textural characterisation using Ar adsorption/desorption data of LTA zeolite shown the existence of mesoporous. Atomic force microscopy (AFM) in combination with the SEM characterised the membrane morphology and the dispersion of zeolite fillers. The effect of the zeolite loading on the performance of the MMMs was analysed. It points out that N2 permeability was increased with the increment of zeolite filler, also the high membranes permeability and the weak dependence upon transmembrane pressure and therefore its high selectivity. The average membrane thickness was 150 μm.

中文翻译：

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由聚砜和林德 A 型沸石制备的混合基质膜

摘要 这项工作的重点是浸涂和进一步相转化制备的聚砜/LTA ​​沸石混合基质膜 (MMM)。将通过无有机物方法在水热条件下合成的林德 A 型 (LTA) 沸石作为填料以 10 和 20 重量％的负载量引入聚砜聚合物基质中以获得 MMM。X 射线衍射 (XRD) 和扫描电子显微镜 (SEM) 分析表明，合成的 LTA 沸石样品是晶体，主要由主要为立方体形状的晶体组成。使用 LTA 沸石的 Ar 吸附/解吸数据进行的结构表征表明存在介孔。原子力显微镜 (AFM) 结合 SEM 表征了膜形态和沸石填料的分散。分析了沸石负载量对 MMM 性能的影响。指出N2渗透率随着沸石填料的增加而增加，膜渗透率高，对跨膜压力的依赖性弱，因此具有较高的选择性。平均膜厚度为150μm。