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

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...

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Autores principales: Galloni, Melissa Greta, Campisi, Sebastiano, Marchetti, Sergio Gustavo, Gervasini, Antonella
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Química
Iron-hydroxyapatite
NH3-SCR
NH3-SCO
N2O decomposition
Catalyst preparation
Catalyst characterization
Mössbauer spectroscopy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119653
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-119653
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Iron-hydroxyapatite
NH3-SCR
NH3-SCO
N2O decomposition
Catalyst preparation
Catalyst characterization
Mössbauer spectroscopy
spellingShingle Química
Iron-hydroxyapatite
NH3-SCR
NH3-SCO
N2O decomposition
Catalyst preparation
Catalyst characterization
Mössbauer spectroscopy
Galloni, Melissa Greta
Campisi, Sebastiano
Marchetti, Sergio Gustavo
Gervasini, Antonella
Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
topic_facet Química
Iron-hydroxyapatite
NH3-SCR
NH3-SCO
N2O decomposition
Catalyst preparation
Catalyst characterization
Mössbauer spectroscopy
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.
format Articulo
Articulo
author Galloni, Melissa Greta
Campisi, Sebastiano
Marchetti, Sergio Gustavo
Gervasini, Antonella
author_facet Galloni, Melissa Greta
Campisi, Sebastiano
Marchetti, Sergio Gustavo
Gervasini, Antonella
author_sort Galloni, Melissa Greta
title Environmental Reactions of Air-Quality Protection on Eco-Friendly Iron-Based Catalysts
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
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/119653
work_keys_str_mv AT gallonimelissagreta environmentalreactionsofairqualityprotectiononecofriendlyironbasedcatalysts
AT campisisebastiano environmentalreactionsofairqualityprotectiononecofriendlyironbasedcatalysts
AT marchettisergiogustavo environmentalreactionsofairqualityprotectiononecofriendlyironbasedcatalysts
AT gervasiniantonella environmentalreactionsofairqualityprotectiononecofriendlyironbasedcatalysts
bdutipo_str Repositorios
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