Preparation of high selectivity silicalite-1 membranes by two-step in situ hydrothermal synthesis

查看全文 作　　者：CHEN [1,2]HongLiang;LI [2]YanShuo;YANG [1]JiSong;HOU [1]YongXia;SONG [1]XueYing;HU [1]XiaoJun;YANG [2]WeiShen

机构地区：[1]Key Laboratory of Regional Environment and Eco-Remediation (Shenyang University) of the Ministry of Education, Shenyang 110044, China;[2]State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

出　　处：《Chinese Science Bulletin》索引2011年第56卷第33期,共5页

基　　金：supported by the National Science Fund for Distinguished Young Scholars (20725313);the National Basic Research Program (2003CB615802) 摘　　要：High selectivity silicalite-1 membranes were synthesized on silica tubes by in situ hydrothermal synthesis. Using a two-step synthesis, a membrane with a separation factor of 99 was prepared for separating an ethanol/water mixture at 60°C. The average (n = 4) flux and separation factor of the membranes were 0.47 kg m-2 h-1 and 89, respectively. The membranes exhibited high reproducibility, and the relative standard deviation of the average (n = 4) flux and separation factor were only 5.3% and 9.2%, respectively. These results suggest that silica is a suitable support for synthesis of high-performance silicalite-1 membranes. 关键词：原位水热合成合成制备高选择性膜分离因子乙醇/水分离系数相对标准

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Preparation of high selectivity silicalite-1 membranes by two-step in situ hydrothermal synthesis

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