Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Lucianna Gama"'
Autor:
Maria Aparecida Ribeiro Bonifácio, Hélio de Lucena Lira, Laédna Souto Neiva, Ruth H. G. A. Kiminami, Lucianna Gama
Publikováno v:
Materials Research, Vol 20, Iss 4, Pp 1044-1049 (2017)
In this study, the effects of dopant concentrations on the structural and morphological characteristics of Zn1-xMnxO powders (x= 0.025, 0.05, 0.075, and 0.1 mole) synthesized by the Pechini method has been investigated. The powder was characterized b
Externí odkaz:
https://doaj.org/article/114c63d1a2e04d588fd04048bcfe55fa
Autor:
Ruth Herta Goldsmith Aliaga Kiminami, Maria Aparecida Ribeiro Bonifácio, Hélio de Lucena Lira, Laédna Souto Neiva, Lucianna Gama
Publikováno v:
Materials Research, Vol 20, Iss 4, Pp 1044-1049 (2017)
Materials Research, Volume: 20, Issue: 4, Pages: 1044-1049, Published: 08 JUN 2017
Materials Research v.20 n.4 2017
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Volume: 20, Issue: 4, Pages: 1044-1049, Published: 08 JUN 2017
Materials Research v.20 n.4 2017
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
In this study, the effects of dopant concentrations on the structural and morphological characteristics of Zn1-xMnxO powders (x= 0.025, 0.05, 0.075, and 0.1 mole) synthesized by the Pechini method has been investigated. The powder was characterized b
Autor:
Mateus José C. Oliveira, Lucianna Gama, Guilherme Leocárdio Lucena, Davy Keyson, João Bosco Lucena de Oliveira, Max Rocha Quirino
Publikováno v:
Materials Chemistry and Physics. 185:24-30
ZnO nanostructures were synthesized by microwave hydrothermal treatment using two different mineralization agents (NaOH and NH 4 OH), and were evaluated as catalysts for biodiesel synthesis. The materials were characterized by X-ray diffraction (XRD)
Autor:
Max Rocha Quirino, Guilherme Leocárdio Lucena, Matheus José Cunha de Oliveira, David V. Keyson, João Bosco Lucena de Oliveira, Lucianna Gama
Publikováno v:
Materials Research Bulletin. 74:124-128
Zinc aluminate is a material with high thermal stability and high mechanical strength that, owing to these properties, is used as a catalyst or support. In this work, zinc aluminate spinel was synthesized by the microwave hydrothermal method in only
Autor:
Matheus José Cunha de Oliveira, Lucianna Gama, Max Rocha Quirino, Oscar Borges Melo, Magna Silmara Oliveira De Araújo
Publikováno v:
Periódico Tchê Química. 13:23-29
Cerium oxide is an important catalyst used in several reactions as electrolytes in fuel cells, UV absorber and oxygen sensors. The objective of the present work is CeO2 catalyst synthesis by microwave hydrothermal method and then evaluate the influen
Autor:
Laédna Souto Neiva, João Bosco Lucena de Oliveira, Alberto Correia Gomes Filho, Aluska do Nascimento Simoes Braga, Tamiris Rodrigues Silva, Lucianna Gama
Publikováno v:
Materials Science Forum. :678-681
The synthesis by combustion reaction stands as an alternative technique for preparing powders with high purity level, nanometric particle size and low cost. Therefore, this study had as objective the synthesis and characterization of ferrite powders
Autor:
Laédna Souto Neiva, Matheus José Cunha de Oliveira, Elvia Leal, Maria Aparecida Ribeiro, Lucianna Gama, Aluska N. Simões
Publikováno v:
Materials Science Forum. :1256-1259
The aim this work is to synthesize the CeO2in the ceramic powder form through three different methods of synthesis, they are: method of combustion, Pechini method and hydrothermal method. Will be evaluated the influence exerted by these methods of pr
Autor:
Lucianna Gama, Ribeiro, J.B.L. de Oliveira, Ruth Herta Goldsmith Aliaga Kiminami, Laédna Souto Neiva
Publikováno v:
Materials Science Forum. :1393-1397
Because of the unique properties that the system TiO2-ZrO2 has, this system has attracted great interest in catalytic circles. In general, the TiO2-ZrO2 oxides composites have a greater surface area and a stronger acidity when compared to the single
Publikováno v:
Cerâmica. 58:186-194
O objetivo deste trabalho é desenvolver catalisadores de Ni suportados em α-Al2O3 dopada com os seguintes elementos metálicos: ferro, zinco, cério e zircônio. Os suportes catalíticos de α-Al2O3 dopada foram obtidos por meio do método de sínt
Autor:
Lucianna Gama, Fábio Argolo, Laédna Souto Neiva, Elvia Leal, Jean Pierre La Martini Lima Sousa, Heloysa Martins Carvalho Andrade, Ana Cristina Figueiredo de Melo Costa
Publikováno v:
Materials Science Forum. :916-921
The aim of this work is to evaluate the catalytic activity of NiAl2O4 powders, prepared by combustion reaction with different glycine contents, for the steam reforming of methane. The NiAl2O4 powders were prepared according to the theory of propellan