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Journal of Sol-Gel Science and Technology

, Volume 2, Issue 1–3, pp 595–599 | Cite as

Macroporous thin films for planar chromatography

Code: EP25
  • M. Tsionsky
  • A. Vanger
  • O. Lev
Article

Abstract

A procedure for the preparation of macroporous silica films suitable for planar chromatography is described. The films are produced by a low pH catalyses of alkyltrialkoxysilanes in oversaturated solution of pore forming organic compounds. A segregated three phase system yields thick films (10–60 µm) that have good adhesion to silica glass supports, uniform, mirror like surface and intercalated micron-dimension pores that permit capillarity driven elution of solvents through the film. A phase diagram demonstrating optimal operating conditions for macroporous and microporous film formation is introduced and analyzed.

Keywords

pores chromatography macroporous silica films 

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • M. Tsionsky
    • 1
  • A. Vanger
    • 1
  • O. Lev
    • 1
  1. 1.Division of Environmental Sciences, Fredy and Nadine Herrmann School of Applied Science and TechnologyThe Hebrew University of JerusalemJerusalem

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