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Type: Artigo de periódico
Title: The Influence Of Na+ On The Anilinepropylsilica Xerogel Synthesis By Using The Flouride Nucleophilic Catalyst
Author: Pavan F.A.
Gushikem Y.
Moro C.C.
Costa T.M.H.
Benvenutti E.V.
Abstract: Anilinepropylsilica xerogel was obtained by using an appropriate organosilane and tetraethyl orthosilicate as precursor reagents. The gelation was carried out using HF and NaF as catalysts. The presence of Na+ (when NaF was used) resulted in a decrease in the final organic content of the materials. This effect was interpreted as an inhibition of the organosilane polycondensation possibly due to the Na+ interaction with the SiO- groups of the hydrolyzed organosilane. The presence of Na+ also results in morphological changes in the xerogels.
Rights: fechado
Identifier DOI: 
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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