Preparation and characterization of SiO2 composite membranes for purification of hydrogen for PEMFC

Dong Wook Lee; Bongkuk Sea; Kwan Young Lee; Kew Ho Lee

doi:10.1021/ie010853f

Preparation and characterization of SiO₂ composite membranes for purification of hydrogen for PEMFC

Dong Wook Lee, Bongkuk Sea, Kwan Young Lee, Kew Ho Lee

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Silica composite membranes were prepared for CO removal from products of methanol steam reforming. A porous stainless steel (SUS) support was used to improve the mechanical strength of the membrane. Supports were prepared by coating Ni-powder SiO₂ sols with a particle size of 500 and 150 nm in turns on SUS. Silica top layer was coated on the modified support using a colloidal sol with nanoparticles or a polymeric sol. Density of the membrane surface was controlled by repeating dipping-drying or the whole process of dipping-drying-calcination, and the nanostructure of the top layer was controlled by changing the top layer material. As a result of a mixture gas permeation test of the silica composite membrane using H₂(99%)/CO-(1%), the CO concentration of 10 000 ppm was reduced to under 81 ppm. The permeation mechanism through the membrane was mainly molecular sieving.

Original language	English
Pages (from-to)	3594-3600
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	41
Issue number	15
DOIs	https://doi.org/10.1021/ie010853f
Publication status	Published - 2002 Jul 24

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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abstract = "Silica composite membranes were prepared for CO removal from products of methanol steam reforming. A porous stainless steel (SUS) support was used to improve the mechanical strength of the membrane. Supports were prepared by coating Ni-powder SiO2 sols with a particle size of 500 and 150 nm in turns on SUS. Silica top layer was coated on the modified support using a colloidal sol with nanoparticles or a polymeric sol. Density of the membrane surface was controlled by repeating dipping-drying or the whole process of dipping-drying-calcination, and the nanostructure of the top layer was controlled by changing the top layer material. As a result of a mixture gas permeation test of the silica composite membrane using H2(99%)/CO-(1%), the CO concentration of 10 000 ppm was reduced to under 81 ppm. The permeation mechanism through the membrane was mainly molecular sieving.",

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AU - Lee, Dong Wook

AU - Sea, Bongkuk

AU - Lee, Kwan Young

AU - Lee, Kew Ho

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AB - Silica composite membranes were prepared for CO removal from products of methanol steam reforming. A porous stainless steel (SUS) support was used to improve the mechanical strength of the membrane. Supports were prepared by coating Ni-powder SiO2 sols with a particle size of 500 and 150 nm in turns on SUS. Silica top layer was coated on the modified support using a colloidal sol with nanoparticles or a polymeric sol. Density of the membrane surface was controlled by repeating dipping-drying or the whole process of dipping-drying-calcination, and the nanostructure of the top layer was controlled by changing the top layer material. As a result of a mixture gas permeation test of the silica composite membrane using H2(99%)/CO-(1%), the CO concentration of 10 000 ppm was reduced to under 81 ppm. The permeation mechanism through the membrane was mainly molecular sieving.

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Preparation and characterization of SiO₂ composite membranes for purification of hydrogen for PEMFC

Abstract

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