Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparation of Porous Glasses by the Phase-separation of the Silicate Glass Containing $TiO_2$

$TiO_2$를 함유한 규산염 유리의 상분리를 이용한 다공질 유리의 제조

  • 김병훈 (전남대학교 무기재료공학과) ;
  • 최석진 (전남대학교 무기재료공학과) ;
  • 박태철 (전남대학교 무기재료공학과)
  • Published : 1991.01.01
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Abstract

Microporous glasses in the system TiO2-SiO2-Al2O3-B2O3-CaO-Na2O were prepared by the phase-separation technique. Morphology and distribution of pore and specific surface area of glasses heated and leached out at various conditions were investigated by SEM and Porosimeter. Crystallization of glasses heated above transition temperature was also inspected by X-ray diffraction method. When the heating temperature and time increased, the pore size and volume increased, but the specific surface area decreased above the critical temperature. The phase-separation, specific surface area and pore size showed more sensitive change on the variation of heating temperature than of heating time. The specific surface area and micropore volume of porous glasses prepared in this study were about 120-330$m^2$/g and 0.001-0.01cc/g, respectively. Mean pore size of porous glasses were about 20-90$\AA$. Anatase phases was deposited when the parent glass was heat-treated at 75$0^{\circ}C$ for 6hrs.

Keywords

References

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