A new two-dimensional microporous metal organic framework (MOF), Al-MOF, [Al(OH)(MBA)] (CYCU-7, MBA = diphenylmethane-4,4′-dicarboxylate anion) and its reported analogue, [Al(OH)(SBA)] (CAU-11, SBA = 4,4′-sulfonyldibenzoate anion), have been synthesized using hydrothermal and solvothermal methods, respectively, and their structural crystallinities and defect porosities were carefully controlled and characterized by N₂ sorption isotherms and ²⁷Al solid-state nuclear magnetic resonance measurements. Interestingly, the MOF synthesized by the ethanol-based solvothermal method (CYCU-7) show a significant degree of linker-missing defects compared to that synthesized by the water-based hydrothermal method (CAU-11). We further incorporated the synthesized CYCU-7 and CAU-11 with chitosan (CS) biopolymer to make [email protected] and [email protected] mixed matrix membranes (MMMs) with the loading amount of MOF 2.5, 5.0, or 10 wt%. The as-prepared [email protected] and [email protected] MMMs were applied for separation of water/ethanol mixtures through the pervaporation process, and the effects of the structural properties (e.g. crystallinity and defects) of CYCU-7 and CAU-11 on the separation performance are studied. It is found that defect-rich [email protected] MMMs exhibit higher flux, while [email protected] MMMs with higher crystallinity exhibit a higher separation factor. In addition, the [email protected] MMM with 5.0 wt% loading of CAU-11 displays the best separation performance (separation factor = 2741 and flux = 458 g/m² h).

一种新的二维微孔金属有机骨架（MOF）Al-MOF，[Al（OH）（MBA）]（CYCU-7，MBA =二苯基甲烷-4,4'-二羧酸根阴离子）及其报道的类似物[Al （OH）（SBA）]（CAU-11，SBA = 4,4'-磺酰二苯甲酸酯阴离子），分别采用水热法和溶剂热法合成，其结构结晶度和缺陷孔隙率经过精心控制，并通过N ₂吸附进行表征等温线和²⁷Al固态核磁共振测量。有趣的是，与通过水基水热法（CAU-11）合成的MOF相比，通过乙醇基溶剂热法（CYCU-7）合成的MOF显示出显着程度的接头缺失缺陷。我们进一步将合成的CYCU-7和CAU-11与壳聚糖（CS）生物聚合物结合在一起，制成[电子邮件保护的]和[电子邮件保护的]混合基质膜（MMM），其MOF含量为2.5、5.0或10 wt％。准备好的[受电子邮件保护的]和[受电子邮件保护的] MMM用于通过渗透蒸发过程分离水/乙醇混合物，以及结构性能的影响（例如研究了CYCU-7和CAU-11的结晶度和缺陷对分离性能的影响。发现富含缺陷的[受电子邮件保护的] MMM表现出更高的通量，而具有较高结晶度的[受电子邮件保护的] MMM表现出更高的分离系数。此外，具有5.0 wt％的CAU-11的[受电子邮件保护的] MMM表现出最佳的分离性能（分离系数=​​ 2741和通量= 458 g / m ²  h）。