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

被引：6
作者：
Chen HongLiang [1 ,2 ]
Li YanShuo [2 ]
Yang JiSong [1 ]
Hou YongXia [1 ]
Song XueYing [1 ]
Hu XiaoJun [1 ]
Yang WeiShen [2 ]
机构：
[1] Shenyang Univ, Minist Educ, Key Lab Reg Environm & Ecoremediat, Shenyang 110044, Peoples R China
[2] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2011年 / 56卷 / 33期
关键词：
high-selectivity; silicalite-1; membrane; hydrothermal synthesis; pervaporation; silica tube; ZEOLITE MEMBRANES; SEPARATION PERFORMANCE; PERVAPORATION; EXTRACTION;
D O I：
10.1007/s11434-011-4774-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
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 60A degrees 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.
引用
收藏
页码：3578 / 3582
页数：5
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