The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation

Autores
Alvarez, Mariana; Rueda, Elsa Haydee; Paiva Santos, Carlos O.; Sileo, Elsa Ester
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The ferrihydrite-goethite transformation in samples of pure- and Mn-ferrihydrite was investigated in order to elucidate the effect of Mn(II) in the aging process. Samples of pure- and Mn-ferrihydrites were aged for different times, and their structural changes were described on the basis of Rietveld structure refinements. A comparison of two series of samples with (A-series) and without Mn (F-series) shows b- enlargement and a- and c- shortening due to the presence of Mn during the complete aging process. However, with aging different trends are observed in both the series. In the samples synthesized without Mn(II) the variations in all the unit-cell constants are virtually negligible, whereas in the series with Mn(II) more significant changes are reflected by the enlargement of a- and c- and the shortening of the b. These results confirm that the dimensions of the lattice parameters depend not only on the substitution ratio but also on the aging history of the sample.
Fil: Alvarez, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Química; Argentina
Fil: Rueda, Elsa Haydee. Universidad Nacional del Sur. Departamento de Química; Argentina
Fil: Paiva Santos, Carlos O.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Sileo, Elsa Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Materia
FERRIHYDRITE
AGING
MANGANESE
ATOMIC PARAMETERS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/75425
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite TransformationAlvarez, MarianaRueda, Elsa HaydeePaiva Santos, Carlos O.Sileo, Elsa EsterFERRIHYDRITEAGINGMANGANESEATOMIC PARAMETERShttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The ferrihydrite-goethite transformation in samples of pure- and Mn-ferrihydrite was investigated in order to elucidate the effect of Mn(II) in the aging process. Samples of pure- and Mn-ferrihydrites were aged for different times, and their structural changes were described on the basis of Rietveld structure refinements. A comparison of two series of samples with (A-series) and without Mn (F-series) shows b- enlargement and a- and c- shortening due to the presence of Mn during the complete aging process. However, with aging different trends are observed in both the series. In the samples synthesized without Mn(II) the variations in all the unit-cell constants are virtually negligible, whereas in the series with Mn(II) more significant changes are reflected by the enlargement of a- and c- and the shortening of the b. These results confirm that the dimensions of the lattice parameters depend not only on the substitution ratio but also on the aging history of the sample.Fil: Alvarez, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Química; ArgentinaFil: Rueda, Elsa Haydee. Universidad Nacional del Sur. Departamento de Química; ArgentinaFil: Paiva Santos, Carlos O.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Sileo, Elsa Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaBentham Science Publishers2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/75425Alvarez, Mariana; Rueda, Elsa Haydee; Paiva Santos, Carlos O.; Sileo, Elsa Ester; The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation; Bentham Science Publishers; The Open Mineralogy Journal; 2; 1; 12-2008; 17-211874-4567CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://benthamopen.com/ABSTRACT/TOMJ-2-17info:eu-repo/semantics/altIdentifier/doi/10.2174/18744567000802010017info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:17:02Zoai:ri.conicet.gov.ar:11336/75425instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:17:03.165CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation
title The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation
spellingShingle The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation
Alvarez, Mariana
FERRIHYDRITE
AGING
MANGANESE
ATOMIC PARAMETERS
title_short The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation
title_full The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation
title_fullStr The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation
title_full_unstemmed The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation
title_sort The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation
dc.creator.none.fl_str_mv Alvarez, Mariana
Rueda, Elsa Haydee
Paiva Santos, Carlos O.
Sileo, Elsa Ester
author Alvarez, Mariana
author_facet Alvarez, Mariana
Rueda, Elsa Haydee
Paiva Santos, Carlos O.
Sileo, Elsa Ester
author_role author
author2 Rueda, Elsa Haydee
Paiva Santos, Carlos O.
Sileo, Elsa Ester
author2_role author
author
author
dc.subject.none.fl_str_mv FERRIHYDRITE
AGING
MANGANESE
ATOMIC PARAMETERS
topic FERRIHYDRITE
AGING
MANGANESE
ATOMIC PARAMETERS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The ferrihydrite-goethite transformation in samples of pure- and Mn-ferrihydrite was investigated in order to elucidate the effect of Mn(II) in the aging process. Samples of pure- and Mn-ferrihydrites were aged for different times, and their structural changes were described on the basis of Rietveld structure refinements. A comparison of two series of samples with (A-series) and without Mn (F-series) shows b- enlargement and a- and c- shortening due to the presence of Mn during the complete aging process. However, with aging different trends are observed in both the series. In the samples synthesized without Mn(II) the variations in all the unit-cell constants are virtually negligible, whereas in the series with Mn(II) more significant changes are reflected by the enlargement of a- and c- and the shortening of the b. These results confirm that the dimensions of the lattice parameters depend not only on the substitution ratio but also on the aging history of the sample.
Fil: Alvarez, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Química; Argentina
Fil: Rueda, Elsa Haydee. Universidad Nacional del Sur. Departamento de Química; Argentina
Fil: Paiva Santos, Carlos O.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Sileo, Elsa Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
description The ferrihydrite-goethite transformation in samples of pure- and Mn-ferrihydrite was investigated in order to elucidate the effect of Mn(II) in the aging process. Samples of pure- and Mn-ferrihydrites were aged for different times, and their structural changes were described on the basis of Rietveld structure refinements. A comparison of two series of samples with (A-series) and without Mn (F-series) shows b- enlargement and a- and c- shortening due to the presence of Mn during the complete aging process. However, with aging different trends are observed in both the series. In the samples synthesized without Mn(II) the variations in all the unit-cell constants are virtually negligible, whereas in the series with Mn(II) more significant changes are reflected by the enlargement of a- and c- and the shortening of the b. These results confirm that the dimensions of the lattice parameters depend not only on the substitution ratio but also on the aging history of the sample.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/75425
Alvarez, Mariana; Rueda, Elsa Haydee; Paiva Santos, Carlos O.; Sileo, Elsa Ester; The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation; Bentham Science Publishers; The Open Mineralogy Journal; 2; 1; 12-2008; 17-21
1874-4567
CONICET Digital
CONICET
url http://hdl.handle.net/11336/75425
identifier_str_mv Alvarez, Mariana; Rueda, Elsa Haydee; Paiva Santos, Carlos O.; Sileo, Elsa Ester; The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation; Bentham Science Publishers; The Open Mineralogy Journal; 2; 1; 12-2008; 17-21
1874-4567
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://benthamopen.com/ABSTRACT/TOMJ-2-17
info:eu-repo/semantics/altIdentifier/doi/10.2174/18744567000802010017
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Bentham Science Publishers
publisher.none.fl_str_mv Bentham Science Publishers
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083319208345600
score 13.22299

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