Sustainable fabrication of large-scale tubular LTA zeolite membranes by a simple wet gel conversion
Sustainable fabrication of large-scale tubular LTA zeolite membranes by a simple wet gel conversion
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通过简单的湿凝胶转化可持续制造大规模管状 LTA 沸石膜
DOI：
10.1016/j.micromeso.2021.111541
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发表时间：
2022-01
影响因子：
5.2
通讯作者：
Gaohong He
中科院分区：
文献类型：
--
作者：
Lei Wang;Jianhua Yang;Waseem Raza;Jinqu Wang;Jinming Lu;Yan Zhang;Gaohong He
探索了在大孔α-Al_2O_3管上用一种简单的湿凝胶转化方法制备可持续发展的LTA分子筛膜，大大降低了凝胶消耗。该方法主要包括三个步骤：1)LTA种子载体的水浸；2)凝胶浸渍；3)凝胶转化为LTA膜，而不需要在高压釜中加入任何凝胶溶液。在优化的合成条件下，以5℃为载体的LTA沸石膜具有良好的渗透通量2.56g/(m2.h)，在75℃下渗透汽化脱水90wt%乙醇/10wt%水的分离系数接近9000。在优化的合成条件下，首次在80 cm的α-Al_2O_3管上合成了高性能的大型管状LTA沸石膜，表明该方法为沸石膜的制备提供了令人振奋的机会，大大降低了原料消耗和废物产生。
Sustainable fabrication of LTA zeolite membranes was explored on the macroporous α-Al2O3tubes by a simple wet gel conversion method with largely reduced gel consumption. The method was mainly composed of three steps: 1) water dipping of LTA seeded support 2) gel dipping 3) gel conversion into LTA membrane without any additional gel solution in the autoclave. LTA zeolite membrane under an optimized synthesis condition on the 5 cm support showed good permeation flux of 2.56 kg/(m2·h) with prominent separation factor of near 9000 for the dehydration of 90 wt % ethanol/10 wt % water mixture at 75 °C by pervaporation. Based on the optimized synthesis conditions, high performance large-scale tubular LTA zeolite membranes were further synthesized on the 80 cm α-Al2O3tubes for the first time, demonstrating that this method offered exciting opportunities for the preparation of zeolite membranes with largely reduced raw materials consumption and waste production.
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影响因子：
8.4
作者：
Liu, Gongping;Wei, Wang;Jin, Wanqin
通讯作者：
Jin, Wanqin
影响因子：
8.6
作者：
Algieri, Catia;Drioli, Enrico
通讯作者：
Drioli, Enrico
影响因子：
8.6
作者：
Yacou, Christelle;Smart, Simon;da Costa, Joao C. Diniz
通讯作者：
da Costa, Joao C. Diniz
影响因子：
--
作者：
Huang, Aisheng;Caro, Juergen
通讯作者：
Caro, Juergen
影响因子：
4.2
作者：
Okamoto, K;Kita, H;Kondo, M
通讯作者：
Kondo, M