SYNTHESIS AND CHARACTERIZATION OF MANGANESE- COBALT SOLID SOLUTIONS PREPARED AT LOW TEMPERATURE

Two extreme compositions of the manganese-cobalt oxide system Mn xCo3xO4 namely Co3O4 (x = 0) and MnCo2O4 (x = 1) were prepared in powder form at low temperature by thermal decomposition of nitrates in air. The synthesis was conducted at 150°C. The oxides obtained were characterized by different tec...

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Autores principales:	RIOS,EDMUNDO, LARA,PATRICIO, SERAFINI,DANIEL, RESTOVIC,AMBROSIO, GAUTIER,JUAN LUIS
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2010
Materias:	Manganese cobalt oxide Mixed oxides Spinels Solid Solution Manganese-cobalt distribution
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000200026
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spelling	oai:scielo:S0717-970720100002000262010-09-06SYNTHESIS AND CHARACTERIZATION OF MANGANESE- COBALT SOLID SOLUTIONS PREPARED AT LOW TEMPERATURERIOS,EDMUNDOLARA,PATRICIOSERAFINI,DANIELRESTOVIC,AMBROSIOGAUTIER,JUAN LUIS Manganese cobalt oxide Mixed oxides Spinels Solid Solution Manganese-cobalt distribution Two extreme compositions of the manganese-cobalt oxide system Mn xCo3xO4 namely Co3O4 (x = 0) and MnCo2O4 (x = 1) were prepared in powder form at low temperature by thermal decomposition of nitrates in air. The synthesis was conducted at 150°C. The oxides obtained were characterized by different techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), surface area determination using the Brunauer-Emmett-Teller (BET) method, thermogravimetric analyses (TGA) and oxidation power (OP). XRD analysis revveals that the oxides crystalhze in a cubic spinel-type structure with a unit cell parameter (a o) that increases as cobalt is replaced by manganese. The MnCo2O4 showed 70 m² g-1 and 13 nm of specific surface area and crystallite size respectively. The crystallite was bigger (20nm) when cobalt-manganese oxide is prepared as athin film. Both compounds exhibited nanometric size. The cationic distributions proposed for both oxides on the basis of the physicochemical characterization results showed an excellent agreement with those obtained from the XRD data refinement performed using the Rietveld method.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.55 n.2 20102010-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000200026en10.4067/S0717-97072010000200026
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Manganese cobalt oxide Mixed oxides Spinels Solid Solution Manganese-cobalt distribution
spellingShingle	Manganese cobalt oxide Mixed oxides Spinels Solid Solution Manganese-cobalt distribution RIOS,EDMUNDO LARA,PATRICIO SERAFINI,DANIEL RESTOVIC,AMBROSIO GAUTIER,JUAN LUIS SYNTHESIS AND CHARACTERIZATION OF MANGANESE- COBALT SOLID SOLUTIONS PREPARED AT LOW TEMPERATURE
description	Two extreme compositions of the manganese-cobalt oxide system Mn xCo3xO4 namely Co3O4 (x = 0) and MnCo2O4 (x = 1) were prepared in powder form at low temperature by thermal decomposition of nitrates in air. The synthesis was conducted at 150°C. The oxides obtained were characterized by different techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), surface area determination using the Brunauer-Emmett-Teller (BET) method, thermogravimetric analyses (TGA) and oxidation power (OP). XRD analysis revveals that the oxides crystalhze in a cubic spinel-type structure with a unit cell parameter (a o) that increases as cobalt is replaced by manganese. The MnCo2O4 showed 70 m² g-1 and 13 nm of specific surface area and crystallite size respectively. The crystallite was bigger (20nm) when cobalt-manganese oxide is prepared as athin film. Both compounds exhibited nanometric size. The cationic distributions proposed for both oxides on the basis of the physicochemical characterization results showed an excellent agreement with those obtained from the XRD data refinement performed using the Rietveld method.
author	RIOS,EDMUNDO LARA,PATRICIO SERAFINI,DANIEL RESTOVIC,AMBROSIO GAUTIER,JUAN LUIS
author_facet	RIOS,EDMUNDO LARA,PATRICIO SERAFINI,DANIEL RESTOVIC,AMBROSIO GAUTIER,JUAN LUIS
author_sort	RIOS,EDMUNDO
title	SYNTHESIS AND CHARACTERIZATION OF MANGANESE- COBALT SOLID SOLUTIONS PREPARED AT LOW TEMPERATURE
title_short	SYNTHESIS AND CHARACTERIZATION OF MANGANESE- COBALT SOLID SOLUTIONS PREPARED AT LOW TEMPERATURE
title_full	SYNTHESIS AND CHARACTERIZATION OF MANGANESE- COBALT SOLID SOLUTIONS PREPARED AT LOW TEMPERATURE
title_fullStr	SYNTHESIS AND CHARACTERIZATION OF MANGANESE- COBALT SOLID SOLUTIONS PREPARED AT LOW TEMPERATURE
title_full_unstemmed	SYNTHESIS AND CHARACTERIZATION OF MANGANESE- COBALT SOLID SOLUTIONS PREPARED AT LOW TEMPERATURE
title_sort	synthesis and characterization of manganese- cobalt solid solutions prepared at low temperature
publisher	Sociedad Chilena de Química
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000200026
work_keys_str_mv	AT riosedmundo synthesisandcharacterizationofmanganesecobaltsolidsolutionspreparedatlowtemperature AT larapatricio synthesisandcharacterizationofmanganesecobaltsolidsolutionspreparedatlowtemperature AT serafinidaniel synthesisandcharacterizationofmanganesecobaltsolidsolutionspreparedatlowtemperature AT restovicambrosio synthesisandcharacterizationofmanganesecobaltsolidsolutionspreparedatlowtemperature AT gautierjuanluis synthesisandcharacterizationofmanganesecobaltsolidsolutionspreparedatlowtemperature
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SYNTHESIS AND CHARACTERIZATION OF MANGANESE- COBALT SOLID SOLUTIONS PREPARED AT LOW TEMPERATURE

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