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Composite materials made by a Cu matrix containing ceramic crystals, for example Al2\udO3\ud, could be used for\udproducing non-consumable electrodes with a superior life span in comparison with pure Cu. The operation of the\udmentioned device in oxidant conditions could lead to the formation of ternary phases of the system Al-Cu-O, the spinel\udAl2\udCuO4\ud, for example, whose synthesis based on nitrate mixtures thermal decomposition followed by thermal treatment\udat 1,123 K defines the main goal of the present work. In this context, the effect of some important process variables, such\udas time and sintering grade of the solid bed, has been studied. The results indicate that the spinel Al2CuO4\ud is indeed a possible inclusion in electrodes constructed with Cu-Al2O3 composites, with significant formation kinetics for the imposed temperature. Moreover, the compactation of the initial oxide bed can limit the final conversion achieved

SÍNTESE DO ESPINÉLIO Al2CuO4 VIA DECOMPOSIÇÃO TÉRMICA DE NITRATOS E TRATAMENTO TÉRMICO SUBSEQUENTE