Synthesis and characterization of imine-modified silicas obtained by the reaction of essential oil of Eucalyptus citriodora, 3-aminopropyltriethoxysilane and tetraethylorthosilicate |
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| Affiliation: | 1. Department of Physics, Panimalar Institute of Technology, Chennai 600123, Tamilnadu, India;2. PG and Research Department of Physics, Thiru. Vi. Ka A Govt Arts College, Thiruvarur -10003, Tamilnadu, India;3. Department of Physics, Arignar Anna Govt. Arts College, Cheyyar 604407, Tamilnadu, India;4. Department of Applied Physics, Sri Venkateswara College of Engineering, Sriperumbudur 602117, Tamilnadu, India;5. Department of Chemistry, Panimalar Institute of Technology, Chennai 600123, Tamilnadu, India;6. Department of Physics, Puratchi Thalaivar Dr MGR Govt. Arts and Science College, Uthiramerur 603406, Tamilnadu, India;1. Laboratório de Síntese Orgânica Limpa—LASOL, CCQFA, Universidade Federal de Pelotas—UFPel, PO Box 354, 96010-900 Pelotas, RS, Brazil;2. Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, 3001 Leuven, Belgium;1. Department of Food Technology, Federal University of Sergipe, Av. Marechal Rondon, S/N, São Cristóvão, Sergipe, CEP 49100-000, Brazil;2. Department of Agronomy, Federal University of Sergipe, Av. Marechal Rondon, S/N, São Cristóvão, Sergipe, CEP 49100-000, Brazil;1. LASOL, CCQFA, Universidade Federal de Pelotas, UFPel, P.O. Box 354, 96010-900 Pelotas, RS, Brazil;2. CCNH, Universidade Federal do ABC, Av. dos Estados 5001, 09210-580, Santo André, SP, Brazil |
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| Abstract: | 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. |
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| Keywords: | FT-IR spectroscopy ATR Imine-modified silicas Essential oil Sol–gel 3-Aminopropyltriethoxysilane Tetraethylorthosilicate |
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