Results 61 to 70 of about 613 (99)

Síntesis y caracterización de LaCoO₃±δ por el método de Pechini para su evaluación como cátodo en una CCOS [PDF]

, 2019
Las celdas de combustible están compuestas por dos electrodos y un electrolito sólido, que convierten la energía química a energía eléctrica, reduciendo las emisiones contaminantes y aumentando su eficiencia.
Hernández Pérez, Isaías, Rodríguez Flores, Tatiana, De la Huerta Hernández, Gloria Elena, Chávez Carvayar, José Álvaro, Castro Cisneros, Iván   +4 more
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TiO2:Ce obtido pelo método Pechini modificado para fotodegredação de azo-corante [PDF]

, 2015
The water contamination has been one of the major problems of society, and various technologies have been recently studied for the treatment of sewage and industrial waste water. Advanced oxidation processes have been studied recently by the satisfactory
Vieira, Caroline Gomes de Sousa
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SÍNTESE DE PÓS DE α-ALUMINA COM ADIÇÃO DE SEEDS ATRAVÉS DO MÉTODO PECHINI

, 2012
A alumina é um material cerâmico de grande importância tecnológica, devido às suas propriedades mecânicas, elétricas, térmicas e ópticas. Em escala industrial, a alumina é obtida a partir da bauxita, através do processo Bayer.
RAPHAEL EUCLIDES PRESTES SALEM
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Uso de métodos químicos para obtener polvos cerámicos del sistema (Sn, Ti)O₂

Boletín de la Sociedad Española de Cerámica y Vidrio, 2005
The (Sn,Ti)O2 system has a great interest due to its technological applications such as gas sensor and varistor. Although the thermodynamic properties and the kinetics of spinoidal decomposition in this system have been extensively studied, the general ...
Rodríguez-Páez, J E., Varela, J. A., Ararat, C.   +2 more
doaj  

Síntese pelo método pechini e caracterização da zircônia dopada com cério e neodímio [PDF]

, 2012
In this study five compositions were synthesized zirconia doped with cerium and neodymium ions in the system Ce10-xNdx Zr90O2 with 0,5 ≤ x ≤ 4,0 using the Pechini method.
Andrade, Izangela Marculino de
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Developing ABO3 perovskites synthesized by the Pechini method for their potential application as cathode material in solid oxide fuel cells: Structural and electrical properties

Boletín de la Sociedad Española de Cerámica y Vidrio
In this research, the effect of La substitution by Pr cation in the A-site of ABO3 perovskites was carried out using the Pechini method for use in solid state fuel cells (SOFCs).
Miguel Antonio Domínguez-Crespo, Aidé Minerva Torres-Huerta, Silvia Beatriz Brachetti-Sibaja, Adela Eugenia Rodríguez-Salazar, Francisco Gutiérrez-Galicia, Esther Ramírez-Meneses, Ángela Iveth Licona-Aguilar   +6 more
doaj   +1 more source

Síntese e caracterização de óxidos de cério e cobalto obtidos por gel-combustão e Pechini aplicados às reações de oxidação de n-hexano [PDF]

, 2008
Oxide type spinel AB2O4 presents structure adjusted for application in the automobile industry. The spinel of cobalt has many practical applications had its excellent physical and chemical properties such as catalyst in hydrocarbon oxidation reaction ...
Sales, Luciano Leal de Morais
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Filmes finos de Titanato de Chumbo e Lantânio - PLT: influência do pH

Cerâmica, 2000
Filmes finos de PbTiO3 dopados com 27% de lantânio, depositados em substratros MgO (100), foram preparados pelo método dos precursores poliméricos (Pechini).
Rangel J. H. G., Pontes F. M. L., Leite E. R., Varela J. A.   +3 more
doaj  

Síntesis, sinterización y propiedades eléctricas de soluciones sólidas YNi_xMn_1-xO₃ preparadas a partir de Precursores Poliméricos

Boletín de la Sociedad Española de Cerámica y Vidrio, 2001
The solid solutions YNixMn1-xO3 are semiconducting materials which show perovskite-like structure, ortorrombic symmetry, and spatial group Pbnm. Their electrical and magnetic properties are typical of materials with potential applications in sensor ...
Moure, C., Durán, P., Tartaj, J., Gutiérrez, D.   +3 more
doaj  

Espinélios Zn2SnO4-Zn2TiO4 obtidos pelo método Pechini modificado, aplicados na descoloração de azo corante

, 2015
Zinc stannate (Zn2SnO4) and zinc titanate (Zn2TiO4) are inverse spineltype oxides and stand out due to their optical, electrical, magnetic, semiconductor and photocatalytic properties. In this work, the two materials were combined in order to obtain a
Costa, Jacqueline Morais
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