Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts

Autores
Galloni, Melissa Greta; Campisi, Sebastiano; Marchetti, Sergio Gustavo; Gervasini, Antonella
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A series of iron functionalized hydroxyapatite (Fe/HAP) samples with different metal loading (2 < wt.% Fe < 13) was prepared by a flash ionic exchange procedure from iron(III) nitrate as precursor and tested in some environmental air-quality protection reactions such as the catalytic reduction of NOx by NH3 (NH3-SCR), catalytic oxidation of NH3 (NH3-SCO) and catalytic N2O decomposition. The catalytic performances of the Fe/HAP catalysts were determined under flow conditions as a function of temperature and using reactant concentrations typical of polluting gaseous emissions from industrial vents. Physico-chemical characterization with various techniques of study (UV-DR and Mössbauer spectroscopies, NH3 titration, N2-physisorption, and XRPD analyses) provided valuable information on Fe-speciation, acidity, morphology, and structure of the samples. In general, highly dispersed Fe3+ centers were the predominant species, irrespective of Fe-loading, while just low percentage (≤15%) of FexOy nanoclusters (2 < size/nm < 4) was detected on the samples. As expected, the differences in iron concentration produced a diversified effect of both catalyst properties and catalytic activity, comprising the conversion and selectivity profiles, different for each reaction considered. The obtained results indicate a good potentiality for the eco-friendly Fe-catalysts for some environmental reactions of air protection.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Materia
Química
Iron-hydroxyapatite
NH3-SCR
NH3-SCO
N2O decomposition
Catalyst preparation
Catalyst characterization
Mössbauer spectroscopy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/119653
Acceder
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network_acronym_str SEDICI
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network_name_str SEDICI (UNLP)
spelling Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based CatalystsGalloni, Melissa GretaCampisi, SebastianoMarchetti, Sergio GustavoGervasini, AntonellaQuímicaIron-hydroxyapatiteNH3-SCRNH3-SCON2O decompositionCatalyst preparationCatalyst characterizationMössbauer spectroscopyA series of iron functionalized hydroxyapatite (Fe/HAP) samples with different metal loading (2 < wt.% Fe < 13) was prepared by a flash ionic exchange procedure from iron(III) nitrate as precursor and tested in some environmental air-quality protection reactions such as the catalytic reduction of NOx by NH3 (NH3-SCR), catalytic oxidation of NH3 (NH3-SCO) and catalytic N2O decomposition. The catalytic performances of the Fe/HAP catalysts were determined under flow conditions as a function of temperature and using reactant concentrations typical of polluting gaseous emissions from industrial vents. Physico-chemical characterization with various techniques of study (UV-DR and Mössbauer spectroscopies, NH3 titration, N2-physisorption, and XRPD analyses) provided valuable information on Fe-speciation, acidity, morphology, and structure of the samples. In general, highly dispersed Fe3+ centers were the predominant species, irrespective of Fe-loading, while just low percentage (≤15%) of FexOy nanoclusters (2 < size/nm < 4) was detected on the samples. As expected, the differences in iron concentration produced a diversified effect of both catalyst properties and catalytic activity, comprising the conversion and selectivity profiles, different for each reaction considered. The obtained results indicate a good potentiality for the eco-friendly Fe-catalysts for some environmental reactions of air protection.Centro de Investigación y Desarrollo en Ciencias Aplicadas2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/119653enginfo:eu-repo/semantics/altIdentifier/issn/2073-4344info:eu-repo/semantics/altIdentifier/doi/10.3390/catal10121415info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-11-12T10:52:33Zoai:sedici.unlp.edu.ar:10915/119653Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-11-12 10:52:33.385SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
title Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
spellingShingle Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
Galloni, Melissa Greta
Química
Iron-hydroxyapatite
NH3-SCR
NH3-SCO
N2O decomposition
Catalyst preparation
Catalyst characterization
Mössbauer spectroscopy
title_short Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
title_full Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
title_fullStr Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
title_full_unstemmed Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
title_sort Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
dc.creator.none.fl_str_mv Galloni, Melissa Greta
Campisi, Sebastiano
Marchetti, Sergio Gustavo
Gervasini, Antonella
author Galloni, Melissa Greta
author_facet Galloni, Melissa Greta
Campisi, Sebastiano
Marchetti, Sergio Gustavo
Gervasini, Antonella
author_role author
author2 Campisi, Sebastiano
Marchetti, Sergio Gustavo
Gervasini, Antonella
author2_role author
author
author
dc.subject.none.fl_str_mv Química
Iron-hydroxyapatite
NH3-SCR
NH3-SCO
N2O decomposition
Catalyst preparation
Catalyst characterization
Mössbauer spectroscopy
topic Química
Iron-hydroxyapatite
NH3-SCR
NH3-SCO
N2O decomposition
Catalyst preparation
Catalyst characterization
Mössbauer spectroscopy
dc.description.none.fl_txt_mv A series of iron functionalized hydroxyapatite (Fe/HAP) samples with different metal loading (2 < wt.% Fe < 13) was prepared by a flash ionic exchange procedure from iron(III) nitrate as precursor and tested in some environmental air-quality protection reactions such as the catalytic reduction of NOx by NH3 (NH3-SCR), catalytic oxidation of NH3 (NH3-SCO) and catalytic N2O decomposition. The catalytic performances of the Fe/HAP catalysts were determined under flow conditions as a function of temperature and using reactant concentrations typical of polluting gaseous emissions from industrial vents. Physico-chemical characterization with various techniques of study (UV-DR and Mössbauer spectroscopies, NH3 titration, N2-physisorption, and XRPD analyses) provided valuable information on Fe-speciation, acidity, morphology, and structure of the samples. In general, highly dispersed Fe3+ centers were the predominant species, irrespective of Fe-loading, while just low percentage (≤15%) of FexOy nanoclusters (2 < size/nm < 4) was detected on the samples. As expected, the differences in iron concentration produced a diversified effect of both catalyst properties and catalytic activity, comprising the conversion and selectivity profiles, different for each reaction considered. The obtained results indicate a good potentiality for the eco-friendly Fe-catalysts for some environmental reactions of air protection.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
description A series of iron functionalized hydroxyapatite (Fe/HAP) samples with different metal loading (2 < wt.% Fe < 13) was prepared by a flash ionic exchange procedure from iron(III) nitrate as precursor and tested in some environmental air-quality protection reactions such as the catalytic reduction of NOx by NH3 (NH3-SCR), catalytic oxidation of NH3 (NH3-SCO) and catalytic N2O decomposition. The catalytic performances of the Fe/HAP catalysts were determined under flow conditions as a function of temperature and using reactant concentrations typical of polluting gaseous emissions from industrial vents. Physico-chemical characterization with various techniques of study (UV-DR and Mössbauer spectroscopies, NH3 titration, N2-physisorption, and XRPD analyses) provided valuable information on Fe-speciation, acidity, morphology, and structure of the samples. In general, highly dispersed Fe3+ centers were the predominant species, irrespective of Fe-loading, while just low percentage (≤15%) of FexOy nanoclusters (2 < size/nm < 4) was detected on the samples. As expected, the differences in iron concentration produced a diversified effect of both catalyst properties and catalytic activity, comprising the conversion and selectivity profiles, different for each reaction considered. The obtained results indicate a good potentiality for the eco-friendly Fe-catalysts for some environmental reactions of air protection.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/119653
url http://sedici.unlp.edu.ar/handle/10915/119653
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2073-4344
info:eu-repo/semantics/altIdentifier/doi/10.3390/catal10121415
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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