Synthesis and characterization of imine-modified silicas obtained by the reaction of essential oil of Eucalyptus citriodora, 3-aminopropyltriethoxysilane and tetraethylorthosilicate

Imine-modified silicas were synthesized by the reaction of the essential oil of Eucalyptus citriodora, 3-aminopropyltriethoxysilane and tetraethylorthosilicate by different methods. The imine supported on silica was characterized by FT-IR-spectroscopy using the attenuated total reflection (ATR) tech...

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Bibliographic Details
Published in:Vibrational spectroscopy 2013-09, Vol.68, p.272-278
Main Authors: Montenegro, Lara M.P., Griep, Jordana B., Tavares, Fabiele C., de Oliveira, Daniela H., Bianchini, Daniela, Jacob, Raquel G.
Format: Article
Language:English
Subjects:
3-Aminopropyltriethoxysilane
ATR
Attenuation
Essential oil
Eucalyptus
FT-IR spectroscopy
Hydrolysis
Imine-modified silicas
Imines
Reflection
Silicon dioxide
Sol–gel
Spectroscopy
Synthesis
Tetraethylorthosilicate
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Summary:Imine-modified silicas were synthesized by the reaction of the essential oil of Eucalyptus citriodora, 3-aminopropyltriethoxysilane and tetraethylorthosilicate by different methods. The imine supported on silica was characterized by FT-IR-spectroscopy using the attenuated total reflection (ATR) technique, the Brunauer–Emmett–Teller (BET) method and thermogravimetric analysis (TGA). These silicas have shown a large amount of organic matter incorporated on the surface, which affects their textural properties. The hydrolysis reaction of the imine-modified silica leads to the formation of products different from those expected.
ISSN:0924-2031
1873-3697
DOI:10.1016/j.vibspec.2013.08.009