Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)

Autores
Cunha, Igor T.; Teixeira, Ivo F.; Albuquerque, Adriana S.; Ardisson, José D.; Macedo, Waldemar A. A.; Oliveira, Henrique S.; Tristão, Juliana C.; Sapag, Manuel Karim; Lago, Rochel M.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, the spinel structured iron oxides, MFe2O4 (M = Cu2+ and Co2+), magnetite (Fe3O4) and maghemite (γ-Fe2O3) were investigated as catalyst for the sulfide oxidation in aqueous medium. XRD, Mössbauer, BET, TPR, SEM/EDS and XPS analyses suggest the formation of the spinel phase with surface areas varying from 75 to 105 m2 g-1 and the metal ions Cu2+ and Co2+ located in the octahedral and tetrahedral sites. It was observed that the presence of Co and especially Cu strongly increased the catalytic activity for the oxidation of sulfide to polysulfides, i.e. Sx 2- (x = 1-4) and other S-O species. The strong effect of Cu2+ is discussed in terms of thermodynamically favorable processes comprising a strong surface interaction of S2--Cu2+, an electron transfer from sulfide to produce Cu1+ followed by an electron transfer from Cu1+ to Fe3+ bulk.
Fil: Cunha, Igor T.. Universidade Federal de Minas Gerais; Brasil
Fil: Teixeira, Ivo F.. University of Oxford; Reino Unido
Fil: Albuquerque, Adriana S.. Centro de Desenvolvimento da Tecnologia Nuclear; Brasil
Fil: Ardisson, José D.. Centro de Desenvolvimento da Tecnologia Nuclear; Brasil
Fil: Macedo, Waldemar A. A.. Centro de Desenvolvimento da Tecnologia Nuclear; Brasil
Fil: Oliveira, Henrique S.. Universidade Federal de Minas Gerais; Brasil
Fil: Tristão, Juliana C.. Universidade Federal de Viçosa; Brasil
Fil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; Argentina. Universidad Nacional de San Luis; Argentina
Fil: Lago, Rochel M.. Universidade Federal de Minas Gerais; Brasil
Materia
Ferrite
Polysulfide
Sulfide Oxidation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/60678
Acceder
id CONICETDig_eee663e157f791879c75fde0dbcb9d19
oai_identifier_str oai:ri.conicet.gov.ar:11336/60678
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)Cunha, Igor T.Teixeira, Ivo F.Albuquerque, Adriana S.Ardisson, José D.Macedo, Waldemar A. A.Oliveira, Henrique S.Tristão, Juliana C.Sapag, Manuel KarimLago, Rochel M.FerritePolysulfideSulfide Oxidationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In this work, the spinel structured iron oxides, MFe2O4 (M = Cu2+ and Co2+), magnetite (Fe3O4) and maghemite (γ-Fe2O3) were investigated as catalyst for the sulfide oxidation in aqueous medium. XRD, Mössbauer, BET, TPR, SEM/EDS and XPS analyses suggest the formation of the spinel phase with surface areas varying from 75 to 105 m2 g-1 and the metal ions Cu2+ and Co2+ located in the octahedral and tetrahedral sites. It was observed that the presence of Co and especially Cu strongly increased the catalytic activity for the oxidation of sulfide to polysulfides, i.e. Sx 2- (x = 1-4) and other S-O species. The strong effect of Cu2+ is discussed in terms of thermodynamically favorable processes comprising a strong surface interaction of S2--Cu2+, an electron transfer from sulfide to produce Cu1+ followed by an electron transfer from Cu1+ to Fe3+ bulk.Fil: Cunha, Igor T.. Universidade Federal de Minas Gerais; BrasilFil: Teixeira, Ivo F.. University of Oxford; Reino UnidoFil: Albuquerque, Adriana S.. Centro de Desenvolvimento da Tecnologia Nuclear; BrasilFil: Ardisson, José D.. Centro de Desenvolvimento da Tecnologia Nuclear; BrasilFil: Macedo, Waldemar A. A.. Centro de Desenvolvimento da Tecnologia Nuclear; BrasilFil: Oliveira, Henrique S.. Universidade Federal de Minas Gerais; BrasilFil: Tristão, Juliana C.. Universidade Federal de Viçosa; BrasilFil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; Argentina. Universidad Nacional de San Luis; ArgentinaFil: Lago, Rochel M.. Universidade Federal de Minas Gerais; BrasilElsevier Science2016-01info: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/11336/60678Cunha, Igor T.; Teixeira, Ivo F.; Albuquerque, Adriana S.; Ardisson, José D.; Macedo, Waldemar A. A.; et al.; Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co); Elsevier Science; Catalysis Today; 259; 1-2016; 222-2270920-5861CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2015.07.023info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0920586115004149info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:38:34Zoai:ri.conicet.gov.ar:11336/60678instacron: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 14:38:35.189CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)
title Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)
spellingShingle Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)
Cunha, Igor T.
Ferrite
Polysulfide
Sulfide Oxidation
title_short Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)
title_full Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)
title_fullStr Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)
title_full_unstemmed Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)
title_sort Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co)
dc.creator.none.fl_str_mv Cunha, Igor T.
Teixeira, Ivo F.
Albuquerque, Adriana S.
Ardisson, José D.
Macedo, Waldemar A. A.
Oliveira, Henrique S.
Tristão, Juliana C.
Sapag, Manuel Karim
Lago, Rochel M.
author Cunha, Igor T.
author_facet Cunha, Igor T.
Teixeira, Ivo F.
Albuquerque, Adriana S.
Ardisson, José D.
Macedo, Waldemar A. A.
Oliveira, Henrique S.
Tristão, Juliana C.
Sapag, Manuel Karim
Lago, Rochel M.
author_role author
author2 Teixeira, Ivo F.
Albuquerque, Adriana S.
Ardisson, José D.
Macedo, Waldemar A. A.
Oliveira, Henrique S.
Tristão, Juliana C.
Sapag, Manuel Karim
Lago, Rochel M.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ferrite
Polysulfide
Sulfide Oxidation
topic Ferrite
Polysulfide
Sulfide Oxidation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work, the spinel structured iron oxides, MFe2O4 (M = Cu2+ and Co2+), magnetite (Fe3O4) and maghemite (γ-Fe2O3) were investigated as catalyst for the sulfide oxidation in aqueous medium. XRD, Mössbauer, BET, TPR, SEM/EDS and XPS analyses suggest the formation of the spinel phase with surface areas varying from 75 to 105 m2 g-1 and the metal ions Cu2+ and Co2+ located in the octahedral and tetrahedral sites. It was observed that the presence of Co and especially Cu strongly increased the catalytic activity for the oxidation of sulfide to polysulfides, i.e. Sx 2- (x = 1-4) and other S-O species. The strong effect of Cu2+ is discussed in terms of thermodynamically favorable processes comprising a strong surface interaction of S2--Cu2+, an electron transfer from sulfide to produce Cu1+ followed by an electron transfer from Cu1+ to Fe3+ bulk.
Fil: Cunha, Igor T.. Universidade Federal de Minas Gerais; Brasil
Fil: Teixeira, Ivo F.. University of Oxford; Reino Unido
Fil: Albuquerque, Adriana S.. Centro de Desenvolvimento da Tecnologia Nuclear; Brasil
Fil: Ardisson, José D.. Centro de Desenvolvimento da Tecnologia Nuclear; Brasil
Fil: Macedo, Waldemar A. A.. Centro de Desenvolvimento da Tecnologia Nuclear; Brasil
Fil: Oliveira, Henrique S.. Universidade Federal de Minas Gerais; Brasil
Fil: Tristão, Juliana C.. Universidade Federal de Viçosa; Brasil
Fil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; Argentina. Universidad Nacional de San Luis; Argentina
Fil: Lago, Rochel M.. Universidade Federal de Minas Gerais; Brasil
description In this work, the spinel structured iron oxides, MFe2O4 (M = Cu2+ and Co2+), magnetite (Fe3O4) and maghemite (γ-Fe2O3) were investigated as catalyst for the sulfide oxidation in aqueous medium. XRD, Mössbauer, BET, TPR, SEM/EDS and XPS analyses suggest the formation of the spinel phase with surface areas varying from 75 to 105 m2 g-1 and the metal ions Cu2+ and Co2+ located in the octahedral and tetrahedral sites. It was observed that the presence of Co and especially Cu strongly increased the catalytic activity for the oxidation of sulfide to polysulfides, i.e. Sx 2- (x = 1-4) and other S-O species. The strong effect of Cu2+ is discussed in terms of thermodynamically favorable processes comprising a strong surface interaction of S2--Cu2+, an electron transfer from sulfide to produce Cu1+ followed by an electron transfer from Cu1+ to Fe3+ bulk.
publishDate 2016
dc.date.none.fl_str_mv 2016-01
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/11336/60678
Cunha, Igor T.; Teixeira, Ivo F.; Albuquerque, Adriana S.; Ardisson, José D.; Macedo, Waldemar A. A.; et al.; Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co); Elsevier Science; Catalysis Today; 259; 1-2016; 222-227
0920-5861
CONICET Digital
CONICET
url http://hdl.handle.net/11336/60678
identifier_str_mv Cunha, Igor T.; Teixeira, Ivo F.; Albuquerque, Adriana S.; Ardisson, José D.; Macedo, Waldemar A. A.; et al.; Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M = Fe, Cu, Co); Elsevier Science; Catalysis Today; 259; 1-2016; 222-227
0920-5861
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2015.07.023
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0920586115004149
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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_ 1846082865577590784
score 13.22299

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