Results 41 to 50 of about 104 (101)

Síntese e caracterização de perovskitas LaNi(1-x)Co xO3 como precursores de catalisadores para a conversão do metano a gás de síntese pela reforma com CO2 Preparation and characterization of LaNi(1-x)Co xO3 perovskites as catalyst precursors for synthesis gas generation by CO2 reforming of methane

Química Nova, 2007
LaNiO3 perovskite was modified by partial substitution of nickel by cobalt in order to increase the stability and resistance to carbon deposition during the methane CO2 reforming.
Sania Maria de Lima, José Mansur Assaf
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EVALUACIÓN CATALÍTICA DE ÓXIDOS POLICATIÓNICOS TIPO PEROVSKITA OBTENIDOS POR POLIMERIZACIÓN CON ÁCIDO CÍTRICO

Revista Colombiana de Química, 2010
En este trabajo se describe la preparación de la perovskita La0,75Sr0,25Co0,5Fe0,5O3, (LaSrCoFeO), empleando una ruta de química húmeda, mediante la polimerización con ácido cítrico, con el propósito de obtener materiales para potenciales aplicaciones ...
Jairo Gómez Cuaspud, Jesús Valencia Rios   +1 more
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Struktura i svojstva dvodimenzionalnih Dion-Jacobson perovskita

, 2021
Dion-Jacobson perovskites are being actively researched for application in LEDs, but the difficulties with experimentally determining the structure of thin films are making insights gained from the relation of the structure to the characteristics of the material hard to come by.
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Sol-gel sinteza kodopiranog perovskita

, 2018
Proučavan je utjecaj jednovalentnog iona litija i trovalentnog iona cerija na tijek kristalizacije i fotokatalitičku aktivnost perovskita. Kodopirani perovskit, Ca1-2x LixCexTiO3 (x=0,00-0,04) pripravljen je sol gel procesom te termičkom obradom pri 500 °C u trajanju od 2 sata.
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ESTRUCTURA METÁLICA DE CATALIZADORES BASADOS EN PEROVSKITA La1-YCeYCo1-XFeXO3 EN METANO REFORMADO CON CO2 Y O2

Avances en Ciencias e Ingeniería, 2011
Se prepararon catalizadores metálicos estructurados constituidos por perovskitas con composiciones LaCo0.6Fe0.4O3, LaCo0.4Fe0.6O3 y La0.9Ce0.1Co0.6Fe0.4O3 soportadas sobre estructuras cónicas de una malla de acero inoxidable 316, a fin de estudiar el ...
Adriana García, Luis V. García, Mireya Goldwasser, Carmen M. López   +3 more
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Thermal evolution of nitrate precursors for processing of lanthanide perovskites

Boletín de la Sociedad Española de Cerámica y Vidrio, 1998
Studies on thermal decomposition of ceramic powder with a general formula of (La1-x Ba x) (Co0.8 Fe0.2)O3 have been achieved. Precursors as nitrate solutions with additive of EDTA as complexion agent are used for powder processing.
Kozhukharov, V. S., Machkova, M. S., Brashkova, N. V.   +2 more
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Interacciones hiperfinas en Ba_xSr_1-xHfO₃

Boletín de la Sociedad Española de Cerámica y Vidrio, 1999
In order to determine the microscopic role of cation A in ABO3 perovskites the hyperfine interaction in the Sr1-xBaxHfO3 system using Perturbed Angular Correlation spectroscopy (PAC) is studied. As a previous result the compositions x = 0.50 and 0.25 are
López García, A., Horowitz, C., Alonso, R. E.   +2 more
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Modelagem computacional de óxidos da família das perovskitas

, 2014
Pós-graduação em Ciência e Tecnologia de Materiais ...
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Performance of cubic-(La,Sr)TiO_3+δ as SOFC anodes

Boletín de la Sociedad Española de Cerámica y Vidrio, 2007
The performance and potential application of the cubic members of the La4Srn-4TinO3n+2 series of compounds, i.e. n≥12, prepared by solid state reaction are discussed.
Marrero-López, D., Irvine, J. T. S., Ballesteros, B., Ruiz-Morales, J. C., Canales-Vázquez, J.   +4 more
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Dielectric characterization of the charge-ordered nickel oxides: La_3/2Sr_1/2NiO₄ and La_5/3Sr_1/3NiO₄

Boletín de la Sociedad Española de Cerámica y Vidrio, 2006
In this work, we study the dielectric properties of the layered perovskites La3/2Sr1/2NiO4 and La5/3Sr1/3NiO4 in the frequency range 20 Hz- 1 MHz and in the temperature range 110-350 K.
Señarís-Rodríguez, M. A., Fondado, A., Mira, J., Rivas-Murias, B., Rivas, J.   +4 more
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