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  • 1 Universidade Federal da Paraíba Departamento de Química João Pessoa Brazil CEP 58059-900 PB Campus I João Pessoa Brazil CEP 58059-900 PB Campus I
  • | 2 Universidade Federal do Rio Grande do Norte Departamento de Química Natal Brazil RN Campus I Natal Brazil RN Campus I
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Abstract  

Because of their electrical, magnetic and catalytic properties rare earth and transition metal mixed oxides are important compounds. Lanthanum chromites have been extensively used as solid oxide fuel cell (SOFC) interconnect materials. In this work, lanthanum chromites partially substituted by alkaline earth metals were synthesized by the urea combustion process. TG and DSC techniques were used to evaluate the presence of the organic material in the powder after reaction on the hot plate. The powders were calcinated at 900C and characterized by XRD and SEM. The results show that the particles have nanometric dimensions and the perovskite structure was formed.

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