| Revista: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000199196 |
| ISSN: | 0100-4042 |
| Autores: | Rodella, Cristiane B1 Nunes, Luis A.O Saeki, Margarida J Padilha, Pedro M Florentino, Ariovaldo O https://biblat.unam.mx/pt/frecuencias/autor1 |
| Instituciones: | 1Universidade de Sao Paulo, Instituto de Fisica de Sao Carlos, Sao Carlos, Sao Paulo. Brasil 2Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Ciencias, Bauru, Sao Paulo. Brasil 3Universidade Estadual Paulista "Julio de Mesquita Filho", Instituto de Bioquimica, Botucatu, Sao Paulo. Brasil |
| Año: | 2002 |
| Periodo: | Mar-Abr |
| Volumen: | 25 |
| Número: | 2 |
| Paginación: | 209-213 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | This work describes a modified sol-gel method for the preparation of V2O5/TiO2 catalysts. The samples have been characterized by N2 adsorption at 77K, x-ray diffractometry (XRD) and Fourier Transform Infrared (FT-IR). The surface area increases with the vanadia loading from 24 m2 g-1, for pure TiO2, to 87 m2 g-1 for 9wt.% of V2O5. The rutile form is predominant for pure TiO2 but became enriched with anatase phase when vanadia loading is increased. No crystalline V2O5 phase was observed in the catalysts diffractograms. Two species of surface vanadium observed by FT-IR spectroscopy a monomeric vanadyl and polymeric vanadates, the vanadyl/vanadate ratio remains practically constant |
| Disciplinas: | Química |
| Palabras clave: | Fisicoquímica y química teórica, Química inorgánica, Caracterización, Secado, Secado supercrítico, Vanadio, Catalizadores, Titanio, Sol-gel |
| Keyword: | Chemistry, Inorganic chemistry, Physical and theoretical chemistry, Characterization, Dry, Supercritical dry, Vanadium, Catalysts, Titanium, Sol-gel |
| Texto completo: | Texto completo (Ver HTML) |
