INCLUSION OF [H3PW12O40] AND [H4SiW12O40] INTO A SILICA GEL MATRIX VIA "SOL-GEL" METHODOLOGY

Here we report the inclusion of two Keggin Polyoxometalates (POMs), [H3PW12O40] and [H4SiW12O40], into silica gels by integrating them during the preparation of the SiO2 matrix via "sol-gel" methods. Aerogels were produced by supercritical drying of the wet gels impregnated with the POMs,...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	REYES-LÓPEZ,MATÍAS, PIZARRO-LUNA,ALEJANDRO, MATA,IGNASI, MOLINS,ELIES, CAREY,DESMOND MACLEOD
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2017
Materias:	Silica Gel polyoxometalates aerogel lyogel Keggin
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000100003
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-97072017000100003
record_format	dspace
spelling	oai:scielo:S0717-970720170001000032017-05-05INCLUSION OF [H3PW12O40] AND [H4SiW12O40] INTO A SILICA GEL MATRIX VIA "SOL-GEL" METHODOLOGYREYES-LÓPEZ,MATÍASPIZARRO-LUNA,ALEJANDROMATA,IGNASIMOLINS,ELIESCAREY,DESMOND MACLEOD Silica Gel polyoxometalates aerogel lyogel Keggin Here we report the inclusion of two Keggin Polyoxometalates (POMs), [H3PW12O40] and [H4SiW12O40], into silica gels by integrating them during the preparation of the SiO2 matrix via "sol-gel" methods. Aerogels were produced by supercritical drying of the wet gels impregnated with the POMs, and lyogels were obtained by means of a lyophilization process. These materials were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transformed infrared (FT-IR) spectroscopy and thermoanalytical techniques (TGA-DSC). We found that a large fraction of POMs are lost during the aging time, and solvent exchange for lyophilization. However the thermal stability of the bare matrix is modified by the inclusion of POMs. Some aggregates with a high content of POMs were found via SEM-EDX.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.62 n.1 20172017-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000100003en10.4067/S0717-97072017000100003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Silica Gel polyoxometalates aerogel lyogel Keggin
spellingShingle	Silica Gel polyoxometalates aerogel lyogel Keggin REYES-LÓPEZ,MATÍAS PIZARRO-LUNA,ALEJANDRO MATA,IGNASI MOLINS,ELIES CAREY,DESMOND MACLEOD INCLUSION OF [H3PW12O40] AND [H4SiW12O40] INTO A SILICA GEL MATRIX VIA "SOL-GEL" METHODOLOGY
description	Here we report the inclusion of two Keggin Polyoxometalates (POMs), [H3PW12O40] and [H4SiW12O40], into silica gels by integrating them during the preparation of the SiO2 matrix via "sol-gel" methods. Aerogels were produced by supercritical drying of the wet gels impregnated with the POMs, and lyogels were obtained by means of a lyophilization process. These materials were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transformed infrared (FT-IR) spectroscopy and thermoanalytical techniques (TGA-DSC). We found that a large fraction of POMs are lost during the aging time, and solvent exchange for lyophilization. However the thermal stability of the bare matrix is modified by the inclusion of POMs. Some aggregates with a high content of POMs were found via SEM-EDX.
author	REYES-LÓPEZ,MATÍAS PIZARRO-LUNA,ALEJANDRO MATA,IGNASI MOLINS,ELIES CAREY,DESMOND MACLEOD
author_facet	REYES-LÓPEZ,MATÍAS PIZARRO-LUNA,ALEJANDRO MATA,IGNASI MOLINS,ELIES CAREY,DESMOND MACLEOD
author_sort	REYES-LÓPEZ,MATÍAS
title	INCLUSION OF [H3PW12O40] AND [H4SiW12O40] INTO A SILICA GEL MATRIX VIA "SOL-GEL" METHODOLOGY
title_short	INCLUSION OF [H3PW12O40] AND [H4SiW12O40] INTO A SILICA GEL MATRIX VIA "SOL-GEL" METHODOLOGY
title_full	INCLUSION OF [H3PW12O40] AND [H4SiW12O40] INTO A SILICA GEL MATRIX VIA "SOL-GEL" METHODOLOGY
title_fullStr	INCLUSION OF [H3PW12O40] AND [H4SiW12O40] INTO A SILICA GEL MATRIX VIA "SOL-GEL" METHODOLOGY
title_full_unstemmed	INCLUSION OF [H3PW12O40] AND [H4SiW12O40] INTO A SILICA GEL MATRIX VIA "SOL-GEL" METHODOLOGY
title_sort	inclusion of [h3pw12o40] and [h4siw12o40] into a silica gel matrix via "sol-gel" methodology
publisher	Sociedad Chilena de Química
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000100003
work_keys_str_mv	AT reyeslopezmatias inclusionofh3pw12o40andh4siw12o40intoasilicagelmatrixviasolgelmethodology AT pizarrolunaalejandro inclusionofh3pw12o40andh4siw12o40intoasilicagelmatrixviasolgelmethodology AT mataignasi inclusionofh3pw12o40andh4siw12o40intoasilicagelmatrixviasolgelmethodology AT molinselies inclusionofh3pw12o40andh4siw12o40intoasilicagelmatrixviasolgelmethodology AT careydesmondmacleod inclusionofh3pw12o40andh4siw12o40intoasilicagelmatrixviasolgelmethodology
_version_	1714200905334652928

INCLUSION OF [H3PW12O40] AND [H4SiW12O40] INTO A SILICA GEL MATRIX VIA "SOL-GEL" METHODOLOGY

Ejemplares similares