| Revue: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000199544 |
| ISSN: | 0100-4042 |
| Autores: | Nassar, Eduardo Jose1 Messaddeq, Younes Ribeiro, Sidney Jose Lima |
| Instituciones: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Instituto de Quimica, Araraquara, Sao Paulo. Brasil 2Universidade de Franca, Franca, Sao Paulo. Brasil |
| Año: | 2002 |
| Periodo: | Ene-Feb |
| Volumen: | 25 |
| Número: | 1 |
| Paginación: | 27-31 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, descriptivo |
| Resumen en inglés | Some aspects of the chemistry involved in the preparation and characterization of functionalized silicon oxide by sol-gel method are considered in this work. The synthesis was performed with different silicon alcoxide precursors and the influence of the acid and basic catalyst was investigated. Characterization was performed by infrared absorption spectroscopy, elemental analysis and 29Si NMR. Infrared data show Si-C and -CH2- vibrational modes at 1250 to 1280 and 2920 to 2940 cm-1, respectively. The elemental analysis confirmed the presence of organic groups in the inorganic silica network. 29Si NMR results show different hydrolisys depending on the acid or base catalysis |
| Disciplinas: | Química |
| Palabras clave: | Química analítica, Química de polímeros, Química inorgánica, Sol-gel, Catálisis, Catálisis ácida, Catálisis básica, Sílica, Método sol-gel, Catalizadores |
| Keyword: | Chemistry, Analytical chemistry, Inorganic chemistry, Polymer chemistry, Sol-gel, Catalysis, Acid catalysis, Base catalysis, Silica, Sol-gel method, Catalysts |
| Texte intégral: | Texto completo (Ver HTML) |
