Synthesis and characterization of imine-modified silicas obtained by the reaction of essential oil of Eucalyptus citriodora, 3-aminopropyltriethoxysilane and tetraethylorthosilicate
详细信息 查看全文
- 作者：Lara M.P. Montenegro ; Jordana B. Griep ; Fabiele C. Tavares ; Daniela H. de Oliveira ; Daniela Bianchini ; Raquel G. Jacob
- 关键词：FT-IR spectroscopy ; ATR ; Imine-modified silicas ; Essential oil ; Sol&ndash ; gel ; 3-Aminopropyltriethoxysilane ; Tetraethylorthosilicate
- 刊名：Vibrational Spectroscopy
- 出版年：September, 2013
- 年：2013
- 卷：68
- 期：Complete
- 页码：272-278
- 全文大小：1038 K
文摘
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.