Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Analysis of the Sol-Gel Coating Process for the Preparation of Supported TiO2 Composite Membranes

$TiO_2$ 복합 분리막의 제조를 위한 졸-겔 코팅공정 분석

  • 현상훈 (연세대학교 세라믹공학과) ;
  • 최영민 (연세대학교 세라믹공학과)
  • Published : 1992.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

The titania membrane thickness coated on the porous alumina support by the sol-gel method was analyzed using the slipcasting model. The thickness of calcined membrane layers increased linearly from 1.3 to 3.8 ${\mu}{\textrm}{m}$ with the square root of the dipping time (4~40 min). Growth rates of the thickness of wet gels and calcined layers were well described quantitatively by the slipcasting model. Through the regression of experimental data using model equations, the permeability and the pressure drop across wet gels, and the thickness and their growth rate constants of wet gels and calcined layers could be determined. It was also known that the gellation concentration of the TiO2 sol used in this work and the porosity of wet gel layes were 25 mol/ι and 0.53, respectively.

Keywords

References

  1. J. Korean Ceram. Soc. v.29 no.2 Characteristics of Alumina-Supported TiO₂Composite Ultrafiltration Membranes Prepared by the Sol-Gel Method S.H. Hyun;Y.M. Choi
  2. J. Membrane Sci. v.10 The Growth of Membrane Technology H.K. Lonsdale
  3. Ultrastructure Processing of Advanced Ceramics Ultrafilters by the Sol-Gel Process L. Cot;A. Larbot;C. Guizard;John D. Mackenzie(ed.)
  4. J. Membrane Sci. v.39 Titania and Aluina Ceramic Membranes M.A. Anderson;M.J. Gleselmann;Q. Xu
  5. J. Membrane Sci. v.39 Special Issue on Ceramic Membranes R.L. Goldsmith
  6. J. Korean Ceram. Soc. v.25 no.1 Preparation of Porous Glass Membranes by the Phase-Separation Technique S.H. Hyun;B.H. Choi
  7. J. Korean Ceram. Soc. v.23 no.5 Preparation of Microporous Glasses by the Phase-Separation Technique and Their Salt-Rejection Characteristics S.H. Hyun;G.T. Kim
  8. UK Patent Application, GB 2,153,807,A Porous Mullite T.R. Jones;C. Gould
  9. J. Non-Cryst. Solids v.63 Generation of SiO₂-Membranes from Alkoxysilanes on Porous Supports A. Kaiser;H. Schmidt
  10. J. Am. Ceram. Soc. v.71 no.2 New Inorganic Ultrafiltration Membranes: Titania and Zirconia Membranes A. Larbot;J.P. Fabre;C. Guizard;L. Cot
  11. J. Colloid Interface Sci. v.105 no.1 The Preparation and Characterization of Alumina Membranes with Ultra-Fine Pores. Part 2: The Formation of Supported Membranes A.F.M. Leenaars;A.J. Burggraaf
  12. J. Am. Ceram. Soc. v.40 no.10 The Mechanism of Pressing and Slip Casting D.S. Adock;I.C. McDowall
  13. Proceeding of the 4th International Conference on Science of Ceramics P.H. Dal;W.J.H. Berden;G.H. Stewart(ed.)
  14. Can. J. Chem. v.36 K. Graham;L.C. Madeley
  15. Physical Chemistry of Surfaces(4th Ed.) A.W. Adamson
  16. Trans. Inst. Chem. Eng. v.15 Fluid Flow through Granular Beds P.C. Carman
  17. J. Mater Sci. v.19 The Preparation and Characterization of Alumina Membranes with Ultra-Fine Pores. Part 1: Microstructural Investigations on Non-Supported Membranes A.F.M. Leenaars;K. Keizer;A.J. Burggraaf