| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308890 |
| ISSN: | 0104-6632 |
| Autors: | Soares-Neto, T.G1 Gobbo-Ferreira, J Cobo, A.J.G2 Cruz, G.M3 |
| Institucions: | 1Instituto Nacional de Pesquisas Espaciais, Laboratorio Associado de Combustao e Propulsao, Cachoeira Paulista, Sao Paulo. Brasil 2Universidade Estadual de Campinas, Faculdade de Engenharia Quimica, Campinas, Sao Paulo. Brasil 3Faculdade de Engenharia Quimica de Lorena, Lorena, Sao Paulo. Brasil |
| Any: | 2003 |
| Període: | Sep |
| Volum: | 20 |
| Número: | 3 |
| Paginació: | 273-282 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Ir/Al2O3, Ir-Ru/Al2O3 and Ru/Al2O3, catalysts with total metal contents of 30% were prepared using the methods of incipient wetness and incipient coimpregnation wetness and were tested in a 2N microthruster. Their performances were then compared with that of the Shell 405 commercial catalyst (30% Ir/Al2O3). Tests were performed in continuous and pulsed regimes, where there are steep temperature and pressure gradients, from ambient values up to 650 ºC and 14 bar. Performance stability, thrust produced, temperature and stagnation pressure in the chamber and losses of mass were analyzed and compared to the corresponding parameters in Shell 405 tests. It was observed that the performance of all the above-mentioned catalysts was comparable to that of the commercial one, except for in loss of mass, where the values was higher, which was attributed to the lower mechanical resistance of the support |
| Disciplines | Química, Ingeniería |
| Paraules clau: | Ingeniería de energéticos, Ingeniería química, Catalizadores bimetálicos, Rutenio, Iridio, Hidrazina, Propulsión de astronaves |
| Keyword: | Chemistry, Engineering, Chemical engineering, Energy engineering, Bimetallic catalysts, Ruthenium, Iridium, Hydrazine, Spacecraft propulsion |
| Text complet: | Texto completo (Ver HTML) |
