Výsledky vyhledávání - "D. K. S. Gomes"

Akademický článek

Síntese, caracterização e propriedades de sistemas contendo óxidos de lantânio, cério e níquel obtidos pelo método dos precursores poliméricos Synthesis, characterization and properties of the systems containing lanthanum, cerium and nickel oxides obtained by polymeric precursor

Autor: D. M. A. Melo, V. G. Oliveira, A. M. G. Pedrosa, P. M. Pimentel, D. K. S. Gomes, J. D. G. Fernandes

Publikováno v: Cerâmica, Vol 52, Iss 324, Pp 245-248 (2006)

No presente trabalho estuda-se a síntese, caracterização e propriedades fotoluminescentes de sistemas contendo óxidos de lantânio, cério e níquel. Estes materiais foram preparados pelo método dos precursores poliméricos, calcinados na faixa

Externí odkaz: https://doaj.org/article/aa23c552805a4ae1abd2fd2dfcca0d43

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Optical and Structural Properties of Lanthanum Chromite Synthesized by Microwave Assisted Self-Combustion Method

Autor: Dulce Maria de Araújo Melo, Patrícia Mendonça Pimentel, Kaique Matheus Barbosa Ferreira, Rosane Maria Pessoa Betânio Oliveira, D. K. S. Gomes, A. F. Costa

Publikováno v: Materials Science Forum. 881:7-11

Lanthanum chromite is a perovskite oxide type, which exhibit high mechanical and chemical stability, high electric conductivity for use in SOFC and catalytic activity for the oxidation reaction. However, their optical properties have not yet been stu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::277652e41eae417dcdad9dfcc5974075
https://doi.org/10.4028/www.scientific.net/msf.881.7

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Síntese, caracterização e propriedades de sistemas contendo óxidos de lantânio, cério e níquel obtidos pelo método dos precursores poliméricos

Autor: J.D.G. Fernandes, V. G. Oliveira, D. K. S. Gomes, Anne M.G. Pedrosa, Patrícia Mendonça Pimentel, Dulce Maria de Araújo Melo

Publikováno v: Cerâmica. 52:245-248

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::be90b127b176d17de0ceb7f6241241ad
https://doi.org/10.1590/s0366-69132006000400005

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Synthesis and characterization of the ceramic system La x Nd 1−x NiO 3−δ (0⩽ x ⩽0.5)

Autor: Dulce Maria de Araújo Melo, Antonio O. S. Silva, Z.L. Santos, D. K. S. Gomes, Clodomiro Alves, J.D.G. Fernandes, Z. R. Silva, L.B. Zinner

Publikováno v: Journal of Solid State Chemistry. 171:195-200

Lanthanum and neodymium nickelate (LaxNd1� xNiO3� d) with x equal to 1.0, 0.9, 0.7 and 0.5 were prepared with molar ratios of 1:1.5 and 1:3. The resins were heated at 3001C for 2 h and then calcinated at 8001C for 12 h. The resulting powders were

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c5c43dd375222a752616a35ce1b7f5b
https://doi.org/10.1016/s0022-4596(02)00208-6

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