Results 21 to 30 of about 2,931 (212)

Synthesis of LiMn2O4 and LiCr0.2Mn1.8O4 powders by modified Pechini process

Semina: Ciências Exatas e Tecnológicas, 2009
LiMn2O4 and LiCr0.2Mn1.8O4 powders were synthesized by Pechini process, modified in order to reduce the number of steps and to work at temperatures below or equal to 400oC. Both phases crystallize in the same spinel structure with lattice constants of 8.21 and 8.22 Å respectively.
Alexandre Urbano, Jair Scarmínio, Antonio Alberto da Silva Alfaya, Reni Ventura da Silva Alfaya, Bernard Joseph Louis Gardes   +4 more
openaire   +2 more sources

Obtención de polvos cerámicos de BNKT-KNN por el método Pechini

Boletín de la Sociedad Española de Cerámica y Vidrio, 2013
Pechini method was used in order to obtain fine ceramic and single-phase powders for a lead-free ferroelectric system 0,97[(Bi1/2Na1/2)1-x(Bi1/2K1/2)xTiO3]-0,03[(Na1/2K1/2)NbO3]or BNKT-KNN (x = 0.00, 0.18, 0.21, 0.24, 0.27). This method allowed obtaining
Yasnó, J. P., Tirado-Mejia, L., Kiminami, Ruth H.G.A., Gaona J., Sonia, Raigoza, C. F.V.   +4 more
doaj   +2 more sources

Effect of pH Variation on Synthesis and Photocatalytic Activity of Bi2Fe4O9

Orbital: The Electronic Journal of Chemistry, 2021
The Pechini synthesis method, presents chemical homogeneity as its main advantage, enabling the desired phase to be obtained. This synthesis usually occurs at pH 7. In this study, Bi2Fe4O9 was synthesized using the Pechini method at different pHs (pH= 3,
Francielli Casanova Monteiro, Paloma de Jesus Cubas, João Frederico H. Leandro Monteiro, Christiana Andrade Pessoa, Elaine Regina Lopes Tiburtius, Sérgio Toshio Fujiwara   +5 more
doaj   +3 more sources

Conductivity and microstructural evaluation of SGDC solid electrolytes synthetized by Pechini and controlled precipitation

Boletín de la Sociedad Española de Cerámica y Vidrio, 2022
In this work, controlled precipitation synthesis methods and polymeric precursors (Pechini) were used to obtain gadolinium-doped cerium oxide solid electrolytes (Ce0.8Gd0.2O1.9) and double-doped cerium oxide with gadolinium and samarium (Ce0.8Gd0.2 ...
Paola Cristina Cajas Daza, Jorge Luiz de Almeida Ferreira, José Alexander Araujo, José Antônio Euzébio Paiva, Rodrigo Arbey Muñoz Meneses, Cosme Roberto Moreira da Silva   +5 more
doaj   +1 more source

Conductividad y evaluación microestructural de Electrolitos sólidos SGDC sintetizados por Pechini y precipitación controlada [PDF]

, 2021
In this work, controlled precipitation synthesis methods and polymeric precursors (Pechini) were used to obtain gadolinium-doped cerium oxide solid electrolytes (Ce0.8Gd0.2O1.9) and double-doped cerium oxide with gadolinium and samarium (Ce0.8Gd0.2 ...
Paiva, José Antônio Euzébio, Ferreira, Jorge Luiz de Almeida, Daza, Paola Cristina Cajas, Meneses, Rodrigo Arbey Muñoz, Araújo, José Alexander, Silva, Cosme Roberto Moreira da   +5 more
core   +1 more source

Characteristics of Samaria-Doped Ceria Prepared by Pechini Method

Acta Physica Polonica A, 2015
CeO2 ceramics doped with 20 mol.% samarium (SDC-20) were prepared through the Pechini process. The samples were calcined at 400, 700 and 1000 °C. The sintering behavior of the calcined SDC-20 powders was also investigated at 1400 °C for 6 h. Microstructural and physical properties of SDC-20 samples were characterized with X-ray diffraction, scanning ...
Arabaci, Aliye, Serin, Özgün
openaire   +1 more source

Influência da adição de níquel na síntese do SrSnO3 Influence of nickel doping on the SrSnO3 synthesis

Cerâmica, 2008
Pós cerâmicos microestruturados de Sr1-xNi xSnO3 (x de 0 a 0,20) foram sintetizados com sucesso pelo método dos precursores poliméricos. Os precursores foram caracterizados por análise térmica.
M. R. Nascimento, M. R. C. Santos, S. J. G. Lima, C. D. Pinheiro, J. W. M. Espinosa, E. Longo, A. G. Souza, I. M. G. Santos   +7 more
doaj   +1 more source

Synthesis and Structural Properties of Niobium Pentoxide Powders: A Comparative Study of the Growth Process [PDF]

Materials Research, 2016
Powders Nb2 O5 were prepared by two different synthesis method, Sol-Gel and polymeric precursors (Pechini). In the Pechini method before adding the citric acid in the process, four different solutions were used to get the samples. For Sol-gel method, two
Angela M. Raba, Jorge Bautista-Ruíz, Miryam R. Joya   +2 more
doaj   +1 more source

Pós nanométricos de BaZrO3: preparação e caracterização de cerâmicas BaZrO3 nanometric powders: preparation and characterization of ceramics

Cerâmica, 2005
Cerâmicas de BaZrO3 foram produzidas a partir de pós sintetizados pelo método de Pechini modificado. Os pós apresentaram tamanho médio de partícula de ~130 nm e 100% de fase cristalina de BaZrO3 depois de tratados termicamente a 800 °C / 2h.
E. Antonelli, M. I. B. Bernardi, A. C. Hernandes   +2 more
doaj   +1 more source

Síntese e caracterização de nanopartículas de TiO2 Synthesis and characterization of TiO2 nanoparticles

Cerâmica, 2006
Vários métodos de síntese química têm sido desenvolvidos e utilizados na obtenção de pós para fabricação de membranas cerâmicas. Dentre os métodos alternativos utilizados em escala de laboratório, o método Pechini tem sido empregado com sucesso para a ...
A. C. F. M. Costa, M. A. Vilar, H. L. Lira, R. H. G. A. Kiminami, L. Gama   +4 more
doaj   +1 more source