Synthesis of High Performance Silicalite-1 Zeolite Membranes

Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (1): 20.

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Synthesis of High Performance Silicalite-1 Zeolite Membranes

CHEN Hong-Liang, LI Xian-Shuo, LIU Jie, YANG Wei-Shen

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

Received:2005-07-21 Online:2006-01-10 Published:2006-01-10
Contact: YANG Wei-Shen,E-mail: yangws@dicp.ac.cn

Abstract

Abstract:

Synthesis of high performance Silicalite-1 zeolite membranes on silica tubes was first reported in this paper. After two-step insitu hydrothermal synthesis, well intergrown Silicalite-1 zeolite membranes were synthesized on silica tubes after aging at 75 ℃ for 12 h. The Silicalite-1 zeolite membranes were characterized by SEM. The separation performance towards ethanol/water mixtures was evaluated by pervaporation. With temperature increasing, the flux of S^-1 membrane, increased from 0.2 kg·m^-2·h^-1 at 30 ℃ to ca. 1.0 kg·m^-2·h^-1 at 80 ℃, while the separation factor decreased from 110 to 89. These results showed that silica supports may be more suitable for preparing high performance Silicalite-1 membranes.

Key words: Silica tubes; Hydrothermal synthesis; Silicalite-1 zeolite membranes; Pervaporation

CLC Number:

O612

TrendMD:

CHEN Hong-Liang, LI Xian-Shuo, LIU Jie, YANG Wei-Shen. Synthesis of High Performance Silicalite-1 Zeolite Membranes[J]. Chem. J. Chinese Universities, 2006, 27(1): 20.

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Synthesis of High Performance Silicalite-1 Zeolite Membranes

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