Síntese de Óxidos Nanoestruturados Em Membranas Porosas de Alumina
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Síntese de Óxidos Nanoestruturados Em Membranas Porosas de Alumina

Síntese de Óxidos Nanoestruturados Em Membranas Porosas de Alumina


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About the Book

O perovskite cúbico de alta temperatura SrCoO3 é um material promissor como cátodo para SOFCs devido à sua alta condutividade elétrica e permeação de oxigênio. Contudo, este óxido não é estável abaixo dos 900 °C, o que provoca uma transição da fase cúbica 3-C para a fase hexagonal 2-H, que é de natureza isolante. Para evitar isso, parte do cobalto é substituída por íons de alto estado de oxidação. A introdução de até 5% de dopante evita completamente a estabilização da fase 2-H, uma melhoria necessária para a comercialização destes materiais. Da mesma forma, os materiais nanoestruturados exibem propriedades superlativas em relação aos materiais de massa. Quando os nanomateriais são organizados em matrizes regulares, as propriedades macroscópicas tornam-se sensíveis à configuração geométrica da matriz. Ambas as razões levaram ao objetivo central deste trabalho: projetar, sintetizar e caracterizar óxido misto com estrutura tipo perovskite (SrCo0,95V0,05O3) embutido em membranas de alumina porosa, sintetizado por anodização dupla de alumínio de alta pureza, apresentando poros com alto grau de ordenação.


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Product Details
  • ISBN-13: 9786202715348
  • Publisher: KS Omniscriptum Publishing
  • Publisher Imprint: Edicoes Nosso Conhecimento
  • Height: 229 mm
  • No of Pages: 120
  • Spine Width: 7 mm
  • Width: 152 mm
  • ISBN-10: 6202715340
  • Publisher Date: 18 Dec 2020
  • Binding: Paperback
  • Language: Portuguese
  • Returnable: N
  • Weight: 236 gr


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