Sol-Gel derived Silica Membranes: Control of Silica Network Size and Hydrothermal Stability

DOI Web Site 51 References

Bibliographic Information

Other Title
  • ゾル－ゲル法による多孔質シリカ膜の細孔径制御法と耐水蒸気性
  • ゾル ゲルホウ ニ ヨル タコウシツ シリカ マク ノ サイコウケイ セイギョホウ ト タイスイ ジョウキセイ

Search this article

Abstract

Sol-gel derived silica membranes are reviewed in terms of control of silica network size and hydrothermal stability, which are most important issues for a practical application of amorphous silica membranes in industry. For control of silica network size, organic-template and spacer methods are introduced. Bridged alkoxides with organic groups between 2 Si atoms can be used for control of silica network size by both template and spacer method, for example, BTESE-derived silica membranes showed quite high hydrogen permeance with high H2 to SF6 permeance ratio of 1,000 due to loose organic-inorganic silica networks by Si-C-C-Si unit. For hydrothermal stability of amorphous silica membranes at high temperatures, metal-doped silica membranes are introduced, especially Ni- and Co-doped silica membranes with superior hydrothermal stability and hydrogen permeation performance. Finally, recent progresses in metal-doped silica membranes such as Nb-SiO2 and Pd-SiO2 are also summarized.

Journal

  • MEMBRANE

    MEMBRANE 36 (3), 97-103, 2011

    THE MEMBRANE SOCIETY OF JAPAN

References(51)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top