SILVA, F.S.RODRIGUES, V.G.MISSO, A.M.MORAIS, V.R.YAMAGATA, C.2017-03-242017-03-24SILVA, F.S.; RODRIGUES, V.G.; MISSO, A.M.; MORAIS, V.R.; YAMAGATA, C. Síntese de silicato de lantânio tipo apatita pelo método sol-gel utilizando silicato de sódio como fonte de sílica. In: CONGRESSO BRASILEIRO DE CERAMICA, 60., 15-18 de maio, 2016, Águas de Lindóia, SP. <b>Anais...</b> p. 156-167. Disponível em: http://repositorio.ipen.br/handle/123456789/27312.http://repositorio.ipen.br/handle/123456789/27312Ceramics of lanthanum silicate apatite-type have been studied with great technological interest at IT-SOFC applications (Intermediate Temperature Solid Oxide Fuel Cell) for having good ionic conductivity at intermediate temperatures (600-800°C), higher than that of YSZ (Ytria Stabilized Zirconia) in high-temperature SOFCs. At this work has made the synthesis of the lanthanum silicate apatite-type from Na2SiO3 as a source of silica by the modified sol-gel method that allowed the formation of ceramic powders of lanthanum silicate apatite-type in calcination temperature at 900°C, which is much lower than those other methods of synthesis. Analysis by x-ray diffraction (XRD) showed the lanthanum silicate apatite-type phase as the main phase. Scanning electron microscopy was used to nanometric powders observation.156-167openAccesssolid oxide fuel cellsapatiteslanthanum silicatesceramicssol-gel processsynthesissilicaTexto completo de evento