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Journal of Sol-Gel Science and Technology

, Volume 41, Issue 3, pp 299–311 | Cite as

Real sol-gel synthesis of catalytically active aluminium fluoride

  • Stephan Rüdiger
  • Gehan Eltanany
  • Udo Groß
  • Erhard Kemnitz
Article

Abstract

Amorphous AlF3 prepared via an anhydrous sol-gel synthesis route exhibits high surface area and Lewis acidity far beyond those known for crystalline AlF3 phases. Its catalytic properties are comparable to those of SbF5. Basis of its unusual properties is a sol-gel fluorination with anhydrous HF in organic solvents yielding first a wet Al-F-sol-gel, which can be dried and eventually post-fluorinated. All parts of the synthesis route were thoroughly investigated. The results of these investigations together with detailed analysis of the Al-F-materials obtained are reported and discussed.

Keywords

Sol-gel fluorination Hydrogen fluoride Aluminium fluoride 

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • Stephan Rüdiger
    • 1
  • Gehan Eltanany
    • 1
  • Udo Groß
    • 1
  • Erhard Kemnitz
    • 1
  1. 1.Institute of ChemistryHumboldt-University BerlinBerlinGermany

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