Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Gas Permeation Properties of the Ceramics-Silicone Composite Membranes

세라믹-실리콘 복합막의 기체투과 특성

  • Hwang, Seung-No (Dep. of Chern. Eng., College of Eng., Dankook Uillv) ;
  • Yang, Jae-Gun (Institute of Org-Silicon Technology, Dankook Uillv) ;
  • Jung, Il-Hyun (Dep. of Chern. Eng., College of Eng., Dankook Uillv)
  • 황승노 (단국대학교 공과대학 화학공학과) ;
  • 양재건 (단국대학교 유기규소 연구소) ;
  • 정일현 (단국대학교 공과대학 화학공학과)
  • Received : 1996.12.27
  • Accepted : 1997.03.19
  • Published : 1997.06.10

Abstract

Ceramic membranes are prepared by using molding method of the glass materials, ceramic-silicone composite membranes are synthesized with immersing silicone compound of sodiumate, $S_3$-Al, S3and we investigated the properties of gas permeation. Ceramic membranes and ceramic-sodiumate membranes that has been prepared were identified as porous structure and ceramic-$S_3$-Al membranes and ceramic-$S_3$ membranes were showed with dense structure by immersion of silicone compounds. Gas permeation properties through the ceramic membranes and ceramic-sodiumate membranes decreased with increasing temperature and linearly increased with increasing pressure, ceramic-$S_3$-Al membranes and ceramic-$S_3$ membranes increased with increasing temperature and pressure effect was low. Permeation rate was found out high value with ceramic membranes and in order of ceramic-sodiumate membranes, ceramic-$S_3$-Al membranes and ceramic-$S_3$ membranes, but selectivity reversed in the order. Gas permeation mechanism through the ceramic membranes and ceramics-sodiumate composite membrane decreased with increasing temperature, suggesting an Knudsen diffusion mechanism, but ceramic-$S_3$-Al composite membranes and ceramic-$S_3$ composite membranes showed an activated diffusion by which gas permeation rates through the membranes increased with an increase in temperature.

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