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Type: Artigo de periódico
Title: Synthesis of a thermally stable silica/p-anisidine sol-gel powdered material
Author: Pavan, FA
Franken, L
Moreira, CA
Costa, TMH
Benvenutti, EV
Gushikem, Y
Abstract: A thermally stable silica/p-anisidine material was obtained by a sol-gel method in two steps: (a) p-anisidine was reacted with 3-chloropropyltrimethoxysilane using NaH as a base activator and; (b) the resulting product of this reaction, p-anisidinepropyltrimethoxysilane (AnPTMS), was condensed with tetraethylorthosilicate. The sol-gel materials were obtained by using the AnPTMS precursor at concentrations of 0.05, 0.15, 0.23, 0.35, and 0.46 mol L-1. The thermal stability of the organic attached groups increases with the AnPTMS precursor concentration added. For the 0.35 and 0.46 mol L-1 cases, the resulting materials were thermally stable up to 300 degreesC, under vacuum. (C) 2001 Academic Press.
Subject: p-anisidine immobilized
silica gel
thermal stability
infrared thermal analysis
Country: EUA
Editor: Academic Press Inc
Citation: Journal Of Colloid And Interface Science. Academic Press Inc, v. 241, n. 2, n. 413, n. 416, 2001.
Rights: fechado
Identifier DOI: 10.1006/jcis.2001.7705
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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