Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/58164
Type: Artigo de periódico
Title: Thermogravimetry as a reliable tool to estimate the density of silanols on a silica gel surface
Author: de Farias, RF
Airoldi, C
Abstract: A method was developed to estimate the density of the silanol groups attached to silica gel surfaces from thermogravimetric data. Depending on the mechanism of condensation of silanol groups during heating, after removing physically adsorbed water, the results obtained ranged from 4.3 to 6.7 OH nm(-2) for a series of silicas. The data are in good agreement with those obtained by other techniques. Thermogravimetry proved to be a reliable tool for this kind of study, with the great advantage of being a simple, quick and inexpensive method requiring only a few mg of the silica sample.
Subject: density of silanol
silanol group
silica surface
thermogravimetry
Country: Holanda
Editor: Kluwer Academic Publ
Rights: fechado
Identifier DOI: 10.1023/A:1010174224567
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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