SYNTHESIS AND CHARACTERIZATION OF MANGANESE COLLOIDS AND ACTIVE SOLIDS PREPARED WITH ORGANICS SOLVENTS

Manganese colloids were prepared by cocondensation of the metal at 77K with ethanol, 2-propanol, 1,2-dimethoxyethane, 2-methoxyethanol and acetone. The distribution of particle sizes was determined by transmission electron microscopy of the most stable dispersions. 	Electrophoretic measuremen...

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Autores principales:	CARDENAS T.,GALO, ACUÑA E.,JOSE
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2000
Materias:	Nanostructures metal colloids vapor deposition electron microscopy infrared spectroscopy
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442000000300022
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spelling	oai:scielo:S0366-164420000003000222001-03-23SYNTHESIS AND CHARACTERIZATION OF MANGANESE COLLOIDS AND ACTIVE SOLIDS PREPARED WITH ORGANICS SOLVENTSCARDENAS T.,GALOACUÑA E.,JOSE Nanostructures metal colloids vapor deposition electron microscopy infrared spectroscopy Manganese colloids were prepared by cocondensation of the metal at 77K with ethanol, 2-propanol, 1,2-dimethoxyethane, 2-methoxyethanol and acetone. The distribution of particle sizes was determined by transmission electron microscopy of the most stable dispersions. Electrophoretic measurements such as: colloid load and zeta potential were achieved. lt was found that the colloids do not possess electrical charge, therefore it is postulated that their stability is by simple solvation. The colloids showed instability at room temperature. In some colloids absorption bands in the UV region were observed. In the visible region no plasma absorption was found. Active solids obtained by evaporation of the solvent contain certain amount of the solvent incorporated, and due to their reactivity they produce a mixture with manganese oxide. The presence of solvents can be observed and their incorporation in the finely divided solids can be observed by FT-IR. Characteristic bands for each solvent were measured. The TGA - FTIR shows the presence of the C = O and C - H bands indicating the acetone in the solid. By means of thermogravimetric analysis and DSC the thermal stability of the solids and the transition heat from the thermal analysis can be determined.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaBoletín de la Sociedad Chilena de Química v.45 n.3 20002000-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442000000300022en10.4067/S0366-16442000000300022
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nanostructures metal colloids vapor deposition electron microscopy infrared spectroscopy
spellingShingle	Nanostructures metal colloids vapor deposition electron microscopy infrared spectroscopy CARDENAS T.,GALO ACUÑA E.,JOSE SYNTHESIS AND CHARACTERIZATION OF MANGANESE COLLOIDS AND ACTIVE SOLIDS PREPARED WITH ORGANICS SOLVENTS
description	Manganese colloids were prepared by cocondensation of the metal at 77K with ethanol, 2-propanol, 1,2-dimethoxyethane, 2-methoxyethanol and acetone. The distribution of particle sizes was determined by transmission electron microscopy of the most stable dispersions. Electrophoretic measurements such as: colloid load and zeta potential were achieved. lt was found that the colloids do not possess electrical charge, therefore it is postulated that their stability is by simple solvation. The colloids showed instability at room temperature. In some colloids absorption bands in the UV region were observed. In the visible region no plasma absorption was found. Active solids obtained by evaporation of the solvent contain certain amount of the solvent incorporated, and due to their reactivity they produce a mixture with manganese oxide. The presence of solvents can be observed and their incorporation in the finely divided solids can be observed by FT-IR. Characteristic bands for each solvent were measured. The TGA - FTIR shows the presence of the C = O and C - H bands indicating the acetone in the solid. By means of thermogravimetric analysis and DSC the thermal stability of the solids and the transition heat from the thermal analysis can be determined.
author	CARDENAS T.,GALO ACUÑA E.,JOSE
author_facet	CARDENAS T.,GALO ACUÑA E.,JOSE
author_sort	CARDENAS T.,GALO
title	SYNTHESIS AND CHARACTERIZATION OF MANGANESE COLLOIDS AND ACTIVE SOLIDS PREPARED WITH ORGANICS SOLVENTS
title_short	SYNTHESIS AND CHARACTERIZATION OF MANGANESE COLLOIDS AND ACTIVE SOLIDS PREPARED WITH ORGANICS SOLVENTS
title_full	SYNTHESIS AND CHARACTERIZATION OF MANGANESE COLLOIDS AND ACTIVE SOLIDS PREPARED WITH ORGANICS SOLVENTS
title_fullStr	SYNTHESIS AND CHARACTERIZATION OF MANGANESE COLLOIDS AND ACTIVE SOLIDS PREPARED WITH ORGANICS SOLVENTS
title_full_unstemmed	SYNTHESIS AND CHARACTERIZATION OF MANGANESE COLLOIDS AND ACTIVE SOLIDS PREPARED WITH ORGANICS SOLVENTS
title_sort	synthesis and characterization of manganese colloids and active solids prepared with organics solvents
publisher	Sociedad Chilena de Química
publishDate	2000
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442000000300022
work_keys_str_mv	AT cardenastgalo synthesisandcharacterizationofmanganesecolloidsandactivesolidspreparedwithorganicssolvents AT acunaejose synthesisandcharacterizationofmanganesecolloidsandactivesolidspreparedwithorganicssolvents
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SYNTHESIS AND CHARACTERIZATION OF MANGANESE COLLOIDS AND ACTIVE SOLIDS PREPARED WITH ORGANICS SOLVENTS

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