Proceedings of the Membrane Society of Korea Conference (한국막학회:학술대회논문집)

The Membrane Society of Korea (한국막학회)
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Preparation of the silica composite membranes for CO removal from PEMFC anode feed gas

  • Lee, Dong-Wook (Korea Research Institute of Chemical Technology) ;
  • Lee, Yoon-Gyu (Korea Research Institute of Chemical Technology) ;
  • Nam, Seung-Eun (Korea Research Institute of Chemical Technology) ;
  • Bongkuk Sea (Korea Research Institute of Chemical Technology) ;
  • Ihm, Son-Ki (Korea Advanced Institute of Science and Technology) ;
  • Lee, Kew-Ho (Korea Research Institute of Chemical Technology)
  • Published : 2003.07.01
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Abstract

Silica/SUS composite membranes were prepared for CO removal from products of methanol steam reforming. A support was prepared by coating Ni powder of sub-micron and SiO$_2$ sols of particle size of 500nm and 150nm in turns on a porous stainless steel (SUS) substrate. Silica top layer was coated on the modified support using colloidal sol with nanoparticle. As a result of mixture gas permeation test of silica composite membrane using H$_2$(99%)/CO(1%), CO concentration of 10000 ppm was reduced to under 81 ppm, which is acceptable in PEMFC anode gas specification. Permeation mechanism through the membrane was mainly molecular sieving.

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