Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate

Autores
Fuentes Quezada, Eduardo; Cuentas Gallegos, Ana Karina; Rivera Garat, Julio Ernesto; Castañeda, F; Orozco Gamboa, G
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The feasibility of the removal of sulfide species using acid solutions of 12-molybdophosphoric acid was studied. The key factor in this purification process is the formation of a hydrogen-bonded structure between the hydrogen sulfide species and the bridging oxygen atom of the MoO6 octahedrons of the molybdophosphate complexes. The number of bridging oxygen atoms depends of the pH. Consequently, the efficiency of the process is also largely dependent on the pH. Most of the literature focuses on the redox potentials for the purification process. The slope of the redox pair S/H2S and the molybdophosphate complexes is -59 pH/mV. The differences between the redox potentials do not fluctuate with the pH, which indicates that the oxidation of H2S by molybdophosphate complexes is spontaneous in all pH intervals but does not explain why the efficiency decreases at high pH. In summary, the Keggin-type structure contributes to the efficient removal of sulfide because this structure contains the maximum number of bridging oxygen atoms. The solubility of H2S gas is lower in acidic media. This drawback severely restricts the performance of the purification process.
Fil: Fuentes Quezada, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; México
Fil: Cuentas Gallegos, Ana Karina. Universidad Nacional Autónoma de México; México
Fil: Rivera Garat, Julio Ernesto. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; México
Fil: Castañeda, F. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; México
Fil: Orozco Gamboa, G. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; México
Materia
12-Molybdophosphoric
Phosphomolybdic acid
Removal of sulfur compounds
Hydrogen Sulfide
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/46325
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Feasibility of the Redox Sulfur Recovery Process using Heteropoly MolybdophosphateFuentes Quezada, EduardoCuentas Gallegos, Ana KarinaRivera Garat, Julio ErnestoCastañeda, FOrozco Gamboa, G12-MolybdophosphoricPhosphomolybdic acidRemoval of sulfur compoundsHydrogen Sulfidehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The feasibility of the removal of sulfide species using acid solutions of 12-molybdophosphoric acid was studied. The key factor in this purification process is the formation of a hydrogen-bonded structure between the hydrogen sulfide species and the bridging oxygen atom of the MoO6 octahedrons of the molybdophosphate complexes. The number of bridging oxygen atoms depends of the pH. Consequently, the efficiency of the process is also largely dependent on the pH. Most of the literature focuses on the redox potentials for the purification process. The slope of the redox pair S/H2S and the molybdophosphate complexes is -59 pH/mV. The differences between the redox potentials do not fluctuate with the pH, which indicates that the oxidation of H2S by molybdophosphate complexes is spontaneous in all pH intervals but does not explain why the efficiency decreases at high pH. In summary, the Keggin-type structure contributes to the efficient removal of sulfide because this structure contains the maximum number of bridging oxygen atoms. The solubility of H2S gas is lower in acidic media. This drawback severely restricts the performance of the purification process.Fil: Fuentes Quezada, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; MéxicoFil: Cuentas Gallegos, Ana Karina. Universidad Nacional Autónoma de México; MéxicoFil: Rivera Garat, Julio Ernesto. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; MéxicoFil: Castañeda, F. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; MéxicoFil: Orozco Gamboa, G. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; MéxicoEcole Polytechnique de Montreal2016-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/46325Fuentes Quezada, Eduardo; Cuentas Gallegos, Ana Karina; Rivera Garat, Julio Ernesto; Castañeda, F; Orozco Gamboa, G; Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate; Ecole Polytechnique de Montreal; Journal Of New Materials For Electrochemical Systems; 19; 2; 6-2016; 85-901480-2422CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://new-mat.org/ejournal/index.php/jnmes/article/view/334info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:43:06Zoai:ri.conicet.gov.ar:11336/46325instacron: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 15:43:06.7CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate
title Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate
spellingShingle Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate
Fuentes Quezada, Eduardo
12-Molybdophosphoric
Phosphomolybdic acid
Removal of sulfur compounds
Hydrogen Sulfide
title_short Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate
title_full Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate
title_fullStr Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate
title_full_unstemmed Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate
title_sort Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate
dc.creator.none.fl_str_mv Fuentes Quezada, Eduardo
Cuentas Gallegos, Ana Karina
Rivera Garat, Julio Ernesto
Castañeda, F
Orozco Gamboa, G
author Fuentes Quezada, Eduardo
author_facet Fuentes Quezada, Eduardo
Cuentas Gallegos, Ana Karina
Rivera Garat, Julio Ernesto
Castañeda, F
Orozco Gamboa, G
author_role author
author2 Cuentas Gallegos, Ana Karina
Rivera Garat, Julio Ernesto
Castañeda, F
Orozco Gamboa, G
author2_role author
author
author
author
dc.subject.none.fl_str_mv 12-Molybdophosphoric
Phosphomolybdic acid
Removal of sulfur compounds
Hydrogen Sulfide
topic 12-Molybdophosphoric
Phosphomolybdic acid
Removal of sulfur compounds
Hydrogen Sulfide
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 feasibility of the removal of sulfide species using acid solutions of 12-molybdophosphoric acid was studied. The key factor in this purification process is the formation of a hydrogen-bonded structure between the hydrogen sulfide species and the bridging oxygen atom of the MoO6 octahedrons of the molybdophosphate complexes. The number of bridging oxygen atoms depends of the pH. Consequently, the efficiency of the process is also largely dependent on the pH. Most of the literature focuses on the redox potentials for the purification process. The slope of the redox pair S/H2S and the molybdophosphate complexes is -59 pH/mV. The differences between the redox potentials do not fluctuate with the pH, which indicates that the oxidation of H2S by molybdophosphate complexes is spontaneous in all pH intervals but does not explain why the efficiency decreases at high pH. In summary, the Keggin-type structure contributes to the efficient removal of sulfide because this structure contains the maximum number of bridging oxygen atoms. The solubility of H2S gas is lower in acidic media. This drawback severely restricts the performance of the purification process.
Fil: Fuentes Quezada, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; México
Fil: Cuentas Gallegos, Ana Karina. Universidad Nacional Autónoma de México; México
Fil: Rivera Garat, Julio Ernesto. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; México
Fil: Castañeda, F. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; México
Fil: Orozco Gamboa, G. Centro de Investigación y Desarrollo Tecnológico en Electroquímica; México
description The feasibility of the removal of sulfide species using acid solutions of 12-molybdophosphoric acid was studied. The key factor in this purification process is the formation of a hydrogen-bonded structure between the hydrogen sulfide species and the bridging oxygen atom of the MoO6 octahedrons of the molybdophosphate complexes. The number of bridging oxygen atoms depends of the pH. Consequently, the efficiency of the process is also largely dependent on the pH. Most of the literature focuses on the redox potentials for the purification process. The slope of the redox pair S/H2S and the molybdophosphate complexes is -59 pH/mV. The differences between the redox potentials do not fluctuate with the pH, which indicates that the oxidation of H2S by molybdophosphate complexes is spontaneous in all pH intervals but does not explain why the efficiency decreases at high pH. In summary, the Keggin-type structure contributes to the efficient removal of sulfide because this structure contains the maximum number of bridging oxygen atoms. The solubility of H2S gas is lower in acidic media. This drawback severely restricts the performance of the purification process.
publishDate 2016
dc.date.none.fl_str_mv 2016-06
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/11336/46325
Fuentes Quezada, Eduardo; Cuentas Gallegos, Ana Karina; Rivera Garat, Julio Ernesto; Castañeda, F; Orozco Gamboa, G; Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate; Ecole Polytechnique de Montreal; Journal Of New Materials For Electrochemical Systems; 19; 2; 6-2016; 85-90
1480-2422
CONICET Digital
CONICET
url http://hdl.handle.net/11336/46325
identifier_str_mv Fuentes Quezada, Eduardo; Cuentas Gallegos, Ana Karina; Rivera Garat, Julio Ernesto; Castañeda, F; Orozco Gamboa, G; Feasibility of the Redox Sulfur Recovery Process using Heteropoly Molybdophosphate; Ecole Polytechnique de Montreal; Journal Of New Materials For Electrochemical Systems; 19; 2; 6-2016; 85-90
1480-2422
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://new-mat.org/ejournal/index.php/jnmes/article/view/334
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Ecole Polytechnique de Montreal
publisher.none.fl_str_mv Ecole Polytechnique de Montreal
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_ 1846083537431691264
score 13.22299

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