Low cost and high performance NaA zeolite membranes have been successfully prepared on 100-cm-long coarse macroporous alumina supports using industrial grade reagents and chemicals. A simple and efficient sandpaper polishing method can effectively reduce the support surface roughness and the formation process of NaA zeolite membranes was investigated on inexpensive coarse supports by secondary growth, which was more conducive to the preparation of high performance membranes. For separation of a 90 wt% EtOH/H₂O mixture at 348 K, the scaled-up NaA zeolite membrane showed a permeation flux of 4.67 kg m⁻²h⁻¹ and a high separation factor of more than 10,000. Simultaneously, these membranes were used for pervaporation (PV) dehydration of a dimethoxymethane/water (DMM/H₂O) mixture for the first time, which exhibited a permeation flux of 0.89 kg m⁻²h⁻¹ and together with a separation factor of more than 23,000 at 313 K for dehydration of a 96 wt% DMM/H₂O mixture. Moreover, the membrane also showed a superior long-term stability for running over 10 d. Importantly, the study on the recovery of permeation flux of scaled-up NaA zeolite membranes after long-term PV experiment to produce high-concentration DMM product (water content was less than 0.1%) found that the permeation flux was recovered to more than 85% of the fresh membranes after the membranes was cleaned using PV test with a methanol aqueous solution. These 100-cm-long NaA zeolite membranes with low cost and high performance demonstrated a promising industrial application prospects for PV dehydration of DMM/H₂O mixtures and other organic water mixtures.

使用工业级试剂和化学品在 100 厘米长的粗大孔氧化铝载体上成功制备了低成本和高性能的 NaA 沸石膜。一种简单高效的砂纸抛光方法可以有效降低载体表面粗糙度，在廉价的粗载体上通过二次生长研究了NaA沸石膜的形成过程，更有利于制备高性能膜。为了在 348 K 下分离 90 wt% EtOH/H ₂ O 混合物，按比例放大的 NaA 沸石膜显示出 4.67 kg m ^-2 h ^-1的渗透通量以及超过 10,000 的高分离系数。同时，这些膜首次用于二甲氧基甲烷/水 (DMM/H ₂ O) 混合物的渗透蒸发 (PV) 脱水，其渗透通量为 0.89 kg m ^-2 h ^-1并具有分离因子超过 23,000 在 313 K 脱水 96 wt% DMM/H ₂哦混合物。此外，该膜还表现出优异的长期稳定性，可运行 10 天以上。重要的是，经过长期PV实验生产高浓度DMM产品（含水量小于0.1%）的放大NaA沸石膜渗透通量恢复的研究发现，渗透通量恢复到85以上使用 PV 测试用甲醇水溶液清洁膜后新鲜膜的百分比。这些具有低成本和高性能的 100 厘米长的 NaA 沸石膜展示了 DMM/H ₂ O 混合物和其他有机水混合物的PV 脱水的有前景的工业应用前景。