Quick Fabrication of Continuous and Compact Silicalite-1 Membrane on Stainless Steel Net

doi:10.3969/j.issn.0251-0790.2012.06.002

Abstract

Abstract: A new method for quick fabrication of continuous and compact silicalite-1(Si-MFI) membrane on stainless steel net was developed. The method consists of pre-treatment of substrate of stainless steel net with silica solution containing polyethylene oxide(PEO) polymer and a secondary growth process. The continuous and compact Si-MFI membranes were obtained within 12 h. The membrane was further characterized by scanning electron microscopy(SEM) and X-ray diffraction(XRD) analyses. SEM analyses show that the membrane is continuous and highly compact. XRD analyses suggest that the micro-crystals embedded in the membrane are well crystallized. The permeance and separation performance of the Si-MFI membrane were exa-mined with a gas-separation setup combining a gas chromatography. The results show that the Si-MFI membrane has an excellent permeance and separation performance for CO₂ and N₂.

Key words: Zeolite, Membrane, Silicalite-1, Gas separation

CLC Number:

O611

TrendMD:

ZHANG Cong, YAN Wen-Fu, YU Ji-Hong, XU Ru-Ren. Quick Fabrication of Continuous and Compact Silicalite-1 Membrane on Stainless Steel Net[J]. Chem. J. Chinese Universities, 2012, 33(06): 1124.

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