Lanio3 Perovskite Catalysts
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. DESENVOLVIMENTO DE CATALISADORES A BASE DE NÍQUEL COM ESTRUTURA PEROVSQUITA PARA A UTILIZAÇÃO NA PRODUÇÃO DE GÁS DE SÍNTESE.
Nickel-based catalysts with perovskite like structure have shown promising application in several catalytic reactions such as in the partial oxidation of methane to obtain syngas (H2 + CO). However, these properties are potentially influenced by synthesis methods, calcinations conditions (temperature, time and atmosphere) and substitutions of sites A and/or
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2011
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2. Catalisadores de níquel e cobalto obtidos a partir de óxidos do tipo perovskita para reações de reforma a vapor de etanol / Nickel and cobalt catalysts derived of oxides type perovskite for ethanol stean reforming reactions
Neste trabalho foram avaliadas as atividades de catalisadores do tipo perovskita LaNi1-xCoxO3 frente à reação de reforma a vapor de etanol. Devido à baixa área superficial, característica de óxidos do tipo perovskita, esses foram suportados em SiO2, Al2O3 e ZrO2, a fim de verificar o efeito do suporte na atividade catalítica.
Os catalisadores foPublicado em: 2010
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3. Óxidos do tipo perovskita para reação de redução de no com CO
In this work, the perovskite-type oxides LaNiO3, LaMnO3, La0,7Sr0,3NiO3 and La0,7Sr0,3MnO3 were prepared by co-precipitation and tested in the NO reduction with CO at 400 and 500 ºC for 10 h. The catalysts were characterized by X-ray diffraction, temperature programmed reduction with hydrogen, nitrogen adsorption and chemical analysis. The nonstoichiometric
Química Nova. Publicado em: 2009
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4. Síntese e caracterização de catalisadores de LaNiO3 não suportados e suportados em Al2O3 e ZrO2 para a reforma a vapor do metano
Ionic oxides with ABO3 structure, where A represents a rare earth element or an alkaline metal and B is a transition metal from group VIII of the periodic table are potential catalysts for oxidation and good candidates for steam reforming reaction. Different methods have been considered for the synthesis of the oxide materials with perovskite structure to pr
Publicado em: 2007
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5. "Óxidos do tipo Perovskitas para reações de decomposição direta de NO e redução de NO com CO" / "Reduction of NO by CO and direct decomposition of NO on perovskite-type oxide"
A important technology to reduce the atmospheric pollution is the use of catalysts, to transform high pollutant as NO in other inoffensive gases to the environment. In this work, the perovskite oxides La2CuO4, LaNiO3, LaMnO3, La1,4Sr0,6CuO4, La0,7Sr0,3NiO3 e La0,7Sr0,3MnO3 were prepared through co-precipitation method and characterized by X-ray diffraction a
Publicado em: 2006
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6. Perovskitas preparadas pelo método do citrato como catalisadores para a reação de redução de NO com CO / Perovskites prepared by citrate method like catalysts to NO with CO reduction reaction
One of the biggest problems that man has found because of his development is the pollution. The main responsible for atmospheric pollution are the automotive vehicles and to minimize the pollution produced by them it has been necessary to use catalysts. These catalysts, called "three way catalysts", actually have noble metals like active sites, what takes up
Publicado em: 2003
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7. Synthesis and Characterization of LaNiO3, LaNi(1-x)Fe xO3 andLaNi(1-x)Co xO3 Perovskite Oxides for Catalysis Application
Mixed metal oxides with perovskite-type structure show a great potential to be used in catalysis, electrocatalysis and electronic ceramics. Perovskites oxides catalysts with the composition LaNiO3, LaNi(1-x)Fe xO3 and LaNi(1-x)Co xO3 (x = 0.4 and 0.7) have been synthesized by the precipitation method to be used in the methane reforming to produce hydrogen an
Materials Research. Publicado em: 2002-09