Fabrication of high-performance silicalite-1 membrane by a novel seeding method using zeolite-dispersed polymer film
Fabrication of high-performance silicalite-1 membrane by a novel seeding method using zeolite-dispersed polymer film
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DOI：
10.1016/j.micromeso.2017.11.001
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发表时间：
2018-05
影响因子：
5.2
通讯作者：
Kyohei Ueno;Yui Horiguchi;H. Negishi;M. Miyamoto;S. Uemiya;A. Takeno;Y. Sawada;Y. Oumi
中科院分区：
文献类型：
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作者：
Kyohei Ueno;Yui Horiguchi;H. Negishi;M. Miyamoto;S. Uemiya;A. Takeno;Y. Sawada;Y. Oumi
采用新型的沸石分散聚合物膜播种方法，在管状二氧化硅载体上成功制备了具有高渗透性和高可重复性的硅石-1膜。所提出的播种方法（薄膜播种）允许在一次播种步骤中在支撑表面形成均匀连续的沸石种子层，具有高再现性，从而获得具有高分离性能的膜。该膜具有厚度约为12 μm的连续致密沸石层，在323 K的渗透蒸发条件下，乙醇/水的分离系数为120，通量为3.16 kg m−2h−1。这种新型的播种方法将导致合成具有高性能和可重复性的沸石膜的新工艺的发展。此外，鉴于该方法的简单性和有效性，它在各种类型的沸石膜的商业生产中具有巨大的潜力。
A highly reproducible silicalite-1 membrane with high pervaporation performance was successfully prepared on a tubular silica support by a novel seeding method using a zeolite-dispersed polymer film. The proposed seeding method (film seeding) allowed for the formation of a uniform and continuous zeolite seed layer with high reproducibility on the support surface in a single seeding step, resulting in a membrane with high separation performance. The synthesized membrane had a continuous and dense zeolite layer with a thickness of approximately 12 μm and exhibited an ethanol/water separation factor of 120 and flux of 3.16 kg m−2h−1for 10 wt% ethanol/water mixtures at 323 K by pervaporation. This novel seeding method should lead to the development of new processes for synthesizing zeolite membranes that show both high performance and reproducibility. Moreover, given the simplicity and effectiveness of the method, it has immense potential for use in the commercial production of various types of zeolite membranes.