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Nanostructured oxides with interesting magnetic properties, such as the spinel Al2\udMnO4\ud, can be synthesized\udthrough thermal decomposition of nitrate solution followed by thermal treatment under a reducing atmosphere. The\udpresent work can be understood as a study of the synthesis of Al2\udMnO4\ud samples based on the H2\ud reduction of Al and Mn\udoxide mixtures, including a discussion of the effect of some important process variables over the kinetic behavior of the\udsystem, such as temperature and thermal treatment time. For the temperature range considered (1,073 K to 1,173 K)\udboth the total reduction of manganese oxides to MnO, as well as the formation of spinel structures could be verified. At\udthe beginning of the formation process, the spinel shows considerable cationic disorder (non-stoichiometric structure).\udThe structure then evolves to the equilibrium stoichiometric form for higher process temperature and time

SÍNTESE DO ESPINÉLIO Al2MnO4 VIA REDUÇÃO COM H2