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Sol-Gel Chemistry of Hydrogenosiliconates: The Role of Hypervalent Silicon Species

  • V. Belot (a1), R. Corriu (a1), C. Guerin (a1), B. Henner (a1), D. Leclercq (a1), H. Mutin (a1), A. Vioux (a1) and Q. Wang (a1)...

Abstract

The hydrolysis of organic silicates ( mainly Si(OEt)4: [TEOS] and Si(OMe)4: [TMOS]) is the key reaction in sol gel process for preparation of silica. The mechanism of this reaction is not well known because of the competition taking place between hydrolysis itself and condensation reactions (homo or heterocondensations) but also because of redistribution reactions which take place competitively. Furthermore the competition between these steps depends also on the catalysis (acid,basic or nucleophilic) [1, 3].

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Sol-Gel Chemistry of Hydrogenosiliconates: The Role of Hypervalent Silicon Species

  • V. Belot (a1), R. Corriu (a1), C. Guerin (a1), B. Henner (a1), D. Leclercq (a1), H. Mutin (a1), A. Vioux (a1) and Q. Wang (a1)...

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