다공성 알루미나 관에 지지된 Pd / Al2O3 복합막의 졸 - 겔법에 의한 제조와 분리특성 Preparation and Characterization of Pd / Al2O3 Composite Membrane Supported on Porous Alumina Tube by Sol - Gel Method

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Composite alumina membrane was prepared for the hydrogen separation from H₂-N₂ mixture gas. The membrane was formed in a porous alumina support by coating with boehmite sol mixture by Yoldas method[9] with 5 wt% concentration of Pd in dry base. Sonication of the sol mixture increased the Pd dispersion compared to that of conventional impregnation method. In order to facilitate penetration of the sol, the inner side of the porous alumina support was maintained at the vacuum condition of 20 torr during the coating procedure. Tortuosity of the resulting membrane was increased from 10 to 20. The selectivity also increased up to 10 because of the activated diffusion by the Pd particles dispersed in the alumina membrane layer. Sealing between membrane housing and supported membrane was designed to endure high temperature operation and provided a way to develop alumina membrane module.
Publisher
한국화학공학회
Issue Date
1995-02
Language
Korean
Citation

KOREAN CHEMICAL ENGINEERING RESEARCH(HWAHAK KONGHAK), v.33, no.1, pp.29 - 38

ISSN
0304-128X
URI
http://hdl.handle.net/10203/76280
Appears in Collection
CBE-Journal Papers(저널논문)
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