Atena Editora

Neste trabalho, pós de óxido de cério

(CeO2

) foram obtidos via síntese hidrotermal

assistida por micro-ondas em tempos de

síntese extremamente rápidos. A morfologia

dos pós foi observada por MEV. Além disso,

foram realizadas análises de dilatometria, TGDTA e DRX. Os resultados apontaram picos

característicos da estrutura cúbica tipo fluorita,

referente ao óxido de cério, sem presença de

picos secundários. Observou-se também que

as amostras processadas em patamares de 10

e 20 minutos apresentaram comportamentos

distintos quanto às propriedades térmicas e

cristalinidade.

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DOI: Atena
Palavras-chave: óxido de cério, síntese, micro-ondas.
Keywords: In this work, cerium oxide powders (CeO2 ) were obtained via microwave-assisted hydrothermal synthesis in extremely fast synthesis times. The morphology of the post was observed by MEV. In addition, dilatometric analyses, TG-DTA and DRX were carried out. The results pointed to characteristic peaks of the fluorite type cubic structure, pertaining to cerium oxide, without the presence of secondary peaks. It was also observed that samples processed at 10 and 20 minute levels showed distinct behaviors regarding thermal and crystallinity properties.
Abstract:
In this work, cerium oxide powders

(CeO2

) were obtained via microwave-assisted

hydrothermal synthesis in extremely fast

synthesis times. The morphology of the post

was observed by MEV. In addition, dilatometric

analyses, TG-DTA and DRX were carried out.

The results pointed to characteristic peaks of the

fluorite type cubic structure, pertaining to cerium

oxide, without the presence of secondary peaks.

It was also observed that samples processed

at 10 and 20 minute levels showed distinct

behaviors regarding thermal and crystallinity

properties.
Número de páginas: 15

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