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Preparation and pervaporation performance of high-quality silicalite-1 membranes

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Abstract

High-performance silicalite-1 membranes were successfully synthesized on novel porous silica tubes by two-step in-situ hydrothermal synthesis. The flux and separation factor towards ethanol/water mixture at 60°C were 0.56 kg/(m2·h) and 84, respectively. The as-synthesized silicalite-1 membranes were characterized by scanning electron microscopy (SEM). The influence of different synthesis conditions on the separation performance of the silicalite-1 membranes was investigated. It was found that the average flux of silicalite-1 membranes was improved by about 26% after filling the silica tubes with mixed solution containing glycerol and water. After calcinating at 400°C for 5 h repeatedly, membrane synthesized on silica tube still showed high pervaporation performance towards ethanol/water mixture even at a calcination rate of 4°C/min, which suggested that silica support was more suitable for preparing high-performance silicalite-1 membranes.

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Authors and Affiliations

  1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China

    Chen HongLiang, Li YanShuo, Liu Jie & Yang WeiShen

Authors
  1. Chen HongLiang
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  2. Li YanShuo
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  3. Liu Jie
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  4. Yang WeiShen
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Corresponding author

Correspondence to Yang WeiShen.

Additional information

Supported by the National Advanced Materials Committee of China (Grant No. 2003AA328010) and the Ministry of Science and Technology of China (Grant No. G2003CB615802)

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Chen, H., Li, Y., Liu, J. et al. Preparation and pervaporation performance of high-quality silicalite-1 membranes. SCI CHINA SER B 50, 70–74 (2007). https://doi.org/10.1007/s11426-007-0011-2

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  • DOI: https://doi.org/10.1007/s11426-007-0011-2

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