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

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

Research output: Contribution to journalArticle

11 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 languageEnglish
Pages (from-to)3594-3600
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume41
Issue number15
Publication statusPublished - 2002 Jul 24

Fingerprint

Composite membranes
Polymethyl Methacrylate
Proton exchange membrane fuel cells (PEMFC)
Carbon Monoxide
Sols
Silicon Dioxide
Purification
purification
Hydrogen
Silica
hydrogen
membrane
Membranes
Permeation
Drying
silica
Steam reforming
Stainless Steel
Gas mixtures
Powders

ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

Cite this

Preparation and characterization of SiO2 composite membranes for purification of hydrogen for PEMFC. / Lee, Dong Wook; Sea, Bongkuk; Lee, Kwan Young; Lee, Kew Ho.

In: Industrial and Engineering Chemistry Research, Vol. 41, No. 15, 24.07.2002, p. 3594-3600.

Research output: Contribution to journalArticle

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