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采用旋涂技术在多孔氧化铝基片上制备Silicalite-1/zein疏水性复合膜,为增强Silicalite-1粒子的疏水性和在zein基液中的均匀分散性,采用六甲基二硅氮烷的表面改性技术和球磨分散工艺,制备结构均一、厚度在10μm左右复合负载膜.渗透蒸发实验表明:Silicalite1/zein疏水性复合膜在303 K和313 K下分别对含3%(质量分数,下同)和5%乙醇的水溶液进行乙醇组分的提浓,其总的渗透通量和乙醇分离因子分别为0.73~0.82 kg/(m2·h)和4.5~8.7.

参考文献

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