| Revista: | Ecletica quimica |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000332580 |
| ISSN: | 0100-4670 |
| Autores: | Silva, P. R. N1 Soares, A. B2 |
| Instituciones: | 1Universidade Estadual do Norte Fluminense, Centro de Ciencia e Tecnologia, Campos dos Goytacazes, Rio de Janeiro. Brasil 2Centro Federal de Educacao Tecnologica do Espirito Santo, Vitoria, Espirito Santo. Brasil |
| Año: | 2009 |
| Periodo: | Ene-Mar |
| Volumen: | 34 |
| Número: | 1 |
| Paginación: | 31-38 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | The perovskite-type oxides using transition metals present a promising potential as catalysts in total oxidation reaction. The present work investigates the effect of synthesis by oxidant co-precipitation on the catalytic activity of perovskite-type oxides LaBO3 (B= Co, Ni, Mn) in total oxidation of propane and CO. The perovskite-type oxides were characterized by means of X-ray diffraction, nitrogen adsorption (BET method), thermo gravimetric and differential thermal analysis (ATG-DTA) and X-ray photoelectron spectroscopy (XPS). Through a method involving the oxidant co-precipitation it's possible to obtain catalysts with different BET surface areas, of 33-44 m2/g, according the salts of metal used. The characterization results proved that catalysts have a perovskite phase as well as lanthanum oxide, except LaMnO3, that presents a cationic vacancies and generation for known oxygen excess. The results of catalytic test showed that all oxides have a specific catalytic activity for total oxidation of CO and propane even though the temperatures for total conversion change for each transition metal and substance to be oxidized |
| Disciplinas: | Química |
| Palabras clave: | Química organometálica, Perovskitas, Oxidación, Propano |
| Keyword: | Chemistry, Organometallic chemistry, Perovskites, Oxidation, Propane |
| Texto completo: | Texto completo (Ver HTML) |
