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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Formato: | Articulo |
Lenguaje: | Inglés |
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2020
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/119653 |
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I19-R120-10915-119653 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
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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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1764820447567806466 |