한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제30권3호
  • /
  • Pages.189-198
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  • 1993
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

기체분리용 세라믹 복합분리막의 개발 : V. 가압 졸-겔 코팅법에 의한 rrmaltp입자 실리카 막의 합성

Development of Ceramic Composite Membranes for Gas Separation: V. Synthesis of Nanoparticulate Silica Membranes by the Pressurized Sol-Gel Coating Technique

  • 발행 : 1993.03.01
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초록

A new pressurized sol-gel coating technique forming membrane layers inside pores of the porous support by the simple operation has been developed. Crack-free and reproducible nanoparticulate silica membranes supported on the porous $\alpha$-alumina tube are synthesized by pressurized coating at 600kPa for 2hr. The pore radius and N2 gas permiability at the room temperature of silica membrane layers are 8$\AA$ and 7.0$\times$10-7mol/$m^2$.s.Pa, respectively. The mechanism of N2 gas transfer through synthesized membrane layers is the perfect Knudeen flow, and the thermal stability of the silica composite membranes is excellent upto 40$0^{\circ}C$.

키워드

참고문헌

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