Growth and Gas Permeation Properties of Continuous L-type Zeolite Membrane on Stainless Steel Net

doi:10.7503/cjcu20120988

Abstract

Abstract:

Growth of L-type zeolite membrane on stainless steel net by the secondary hydrothermal growth was studied under different conditions. The effects of the alkalinity of the reaction solution and the reaction time on the formation of L-type zeolite membrane were discussed via the observation through scanning electron microscopy technique. The continuous uniform phase-pure L-type zeolite membrane was obtained with a thickness of about 20 μm. Single gas permeation measurement on the as-synthesized L-type membrane demonstrates that the permeance of N₂ and H₂ are 8.39×10^-8 and 6.96×10^-7 mol·m^-2·s^-1·Pa^-1 respectively, indicating an ideal selectivity for H₂/N₂ of 8.3. Binary gas permeation measurement demonstrates that the increase of temperature would strengthen the permeation of N₂ and H₂, but decrease the separation factor of H₂/N₂.

Key words: L-type zeolite membrane, Reaction condition, Gas separation

CLC Number:

O613.72

TrendMD:

ZHANG Jin-Lei, ZHAO Qing, LIU Jia, SUN Fu-Xing. Growth and Gas Permeation Properties of Continuous L-type Zeolite Membrane on Stainless Steel Net[J]. Chem. J. Chinese Universities, 2013, 34(4): 771.

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