Preparation of Silicalite-1 Membranes with Seeding Method and its Separation Performance for Low Ethanol/Water Mixture

Abstract:

High performance silicalite-1 membranes were successfully synthesized on silica tubes by seeding method after filling the tubes with water and glycerol mixtures. After seeding the silica tubes with 200 nm seeds, all the silicalite-1 membranes show acceptable separation performance towards ethanol/water mixture after 4-12 h hydrothermal synthesis, and the highest flux of membrane with 8 h hydrothermal synthesis reaches about 0.98 kg/m².h and the separation factor reaches about 60 towards 3 wt.% ethanol/water mixture. This result shows that the as-synthesized silicalite-1 membrane can concentrate the ethanol from 3% to about 65%, and the ethanol can be obtained over 600 g/m².h by using the silicalite-1 membrane, which shows that seeding method and suitable control of synthesis conditions is possible for preparing high-performance silicalite-1 membranes.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 591-595
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.591
• Online since: September 2013
• Authors: Hong Liang Chen, Ji Song Yang, Yan Wang, Hui Ying Li, Xin Xin Li, Wei Shen Yang
• Keywords: Preparation, Seeding Method, Silicalite-1 Membrane

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