Catalytic Performance and Sulfur Dioxide Resistance of One-Pot Synthesized Fe-MCM-22 in Selective Catalytic Reduction of Nitrogen Oxides with Ammonia (NH3-SCR)-The Effect of Iron Content
[EN] The catalytic performance of Fe-catalysts in selective catalytic reduction of nitrogen oxides with ammonia (NH3-SCR) strongly depends on the nature of iron sites. Therefore, we aimed to prepare and investigate the catalytic potential of Fe-MCM-22 with various Si/Fe molar ratios in NH3-SCR. The...
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MDPI AG
2022
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Online Access: | http://hdl.handle.net/10251/193600 https://doi.org/10.3390/ijms231810754 |
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ftunivpvalencia:oai:riunet.upv.es:10251/193600 |
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Politechnical University of Valencia: RiuNet |
op_collection_id |
ftunivpvalencia |
language |
English |
topic |
DeNO(x) MCM-22 Layered MWW zeolites Iron catalysts SO2 poisoning |
spellingShingle |
DeNO(x) MCM-22 Layered MWW zeolites Iron catalysts SO2 poisoning Szymaszek-Wawryca, Agnieszka DÍAZ MORALES, URBANO MANUEL Duraczynska, Dorota Swierczek, Konrad Samojeden, Bogdan Motak, Monika Catalytic Performance and Sulfur Dioxide Resistance of One-Pot Synthesized Fe-MCM-22 in Selective Catalytic Reduction of Nitrogen Oxides with Ammonia (NH3-SCR)-The Effect of Iron Content |
topic_facet |
DeNO(x) MCM-22 Layered MWW zeolites Iron catalysts SO2 poisoning |
description |
[EN] The catalytic performance of Fe-catalysts in selective catalytic reduction of nitrogen oxides with ammonia (NH3-SCR) strongly depends on the nature of iron sites. Therefore, we aimed to prepare and investigate the catalytic potential of Fe-MCM-22 with various Si/Fe molar ratios in NH3-SCR. The samples were prepared by the one-pot synthesis method to provide high dispersion of iron and reduce the number of synthesis steps. We have found that the sample with the lowest concentration of Fe exhibited the highest catalytic activity of ca. 100% at 175 degrees C, due to the abundance of well-dispersed isolated iron species. The decrease of Si/Fe limited the formation of microporous structure and resulted in partial amorphization, formation of iron oxide clusters, and emission of N2O during the catalytic reaction. However, an optimal concentration of FexOy oligomers contributed to the decomposition of nitrous oxide within 250-400 degrees C. Moreover, the acidic character of the catalysts was not a key factor determining the high conversion of NO. Additionally, we conducted NH3-SCR catalytic tests over the samples after poisoning with sulfur dioxide (SO2). We observed that SO2 affected the catalytic performance mainly in the low-temperature region, due to the deposition of thermally unstable ammonium sulfates. Agnieszka Szymaszek-Wawryca gratefully acknowledges financial support from the National Science Centre Grant Preludium 19 (no. 2020/37/N/ST5/00186). Urbano Diaz acknowledges the support from Government of Spain through the project PID2020-112590GB-C21/AEI/10.13039/501 100011033. The research results presented in this paper by Monika Motak have been developed with the use of equipment financed from the funds of the "Excellence Initiative-Research University" program at AGH University of Science and Technology. Bogdan Samojeden's research was supported by the program "Excellence initiative-research university" for the AGH University of Science and Technology. Szymaszek-Wawryca, A.; Díaz Morales, UM.; ... |
author2 |
National Science Centre, Polonia Agencia Estatal de Investigación AGH University of Science and Technology, Polonia |
format |
Article in Journal/Newspaper |
author |
Szymaszek-Wawryca, Agnieszka DÍAZ MORALES, URBANO MANUEL Duraczynska, Dorota Swierczek, Konrad Samojeden, Bogdan Motak, Monika |
author_facet |
Szymaszek-Wawryca, Agnieszka DÍAZ MORALES, URBANO MANUEL Duraczynska, Dorota Swierczek, Konrad Samojeden, Bogdan Motak, Monika |
author_sort |
Szymaszek-Wawryca, Agnieszka |
title |
Catalytic Performance and Sulfur Dioxide Resistance of One-Pot Synthesized Fe-MCM-22 in Selective Catalytic Reduction of Nitrogen Oxides with Ammonia (NH3-SCR)-The Effect of Iron Content |
title_short |
Catalytic Performance and Sulfur Dioxide Resistance of One-Pot Synthesized Fe-MCM-22 in Selective Catalytic Reduction of Nitrogen Oxides with Ammonia (NH3-SCR)-The Effect of Iron Content |
title_full |
Catalytic Performance and Sulfur Dioxide Resistance of One-Pot Synthesized Fe-MCM-22 in Selective Catalytic Reduction of Nitrogen Oxides with Ammonia (NH3-SCR)-The Effect of Iron Content |
title_fullStr |
Catalytic Performance and Sulfur Dioxide Resistance of One-Pot Synthesized Fe-MCM-22 in Selective Catalytic Reduction of Nitrogen Oxides with Ammonia (NH3-SCR)-The Effect of Iron Content |
title_full_unstemmed |
Catalytic Performance and Sulfur Dioxide Resistance of One-Pot Synthesized Fe-MCM-22 in Selective Catalytic Reduction of Nitrogen Oxides with Ammonia (NH3-SCR)-The Effect of Iron Content |
title_sort |
catalytic performance and sulfur dioxide resistance of one-pot synthesized fe-mcm-22 in selective catalytic reduction of nitrogen oxides with ammonia (nh3-scr)-the effect of iron content |
publisher |
MDPI AG |
publishDate |
2022 |
url |
http://hdl.handle.net/10251/193600 https://doi.org/10.3390/ijms231810754 |
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ENVELOPE(-60.667,-60.667,-63.783,-63.783) ENVELOPE(-55.833,-55.833,-63.000,-63.000) |
geographic |
Diaz Morales |
geographic_facet |
Diaz Morales |
genre |
samojed* samojed* |
genre_facet |
samojed* samojed* |
op_relation |
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https://doi.org/10.3390/ijms231810754 |
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ftunivpvalencia:oai:riunet.upv.es:10251/193600 2024-01-28T10:09:00+01:00 Catalytic Performance and Sulfur Dioxide Resistance of One-Pot Synthesized Fe-MCM-22 in Selective Catalytic Reduction of Nitrogen Oxides with Ammonia (NH3-SCR)-The Effect of Iron Content Szymaszek-Wawryca, Agnieszka DÍAZ MORALES, URBANO MANUEL Duraczynska, Dorota Swierczek, Konrad Samojeden, Bogdan Motak, Monika National Science Centre, Polonia Agencia Estatal de Investigación AGH University of Science and Technology, Polonia 2022-09 http://hdl.handle.net/10251/193600 https://doi.org/10.3390/ijms231810754 eng eng MDPI AG International Journal of Molecular Sciences info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112590GB-C21/ES/MATERIALES HIBRIDOS DE BAJA DIMENSIONALIDAD CON MORFOLOGIA, ESTRUCTURACION Y REACTIVIDAD CONTROLABLE PARA LLEVAR A CABO PROCESOS CATALITICOS Y NANOTECNOLOGICOS / info:eu-repo/grantAgreement/NCN//2020%2F37%2FN%2FST5%2F00186/ https://doi.org/10.3390/ijms231810754 10.1016/j.jclepro.2017.12.254 10.1016/j.cattod.2020.05.015 10.1016/j.jhazmat.2020.123413 10.1021/acs.chemrev.9b00202 10.3390/catal11020250 10.3390/catal10121421 10.1021/acs.iecr.0c02308 10.1016/j.cattod.2020.04.051 10.1016/j.cattod.2020.07.042 10.3390/en13236200 10.3390/en13153870 10.1016/S1872-2067(18)63011-6 10.1016/j.apcatb.2020.118872 10.1021/acs.jpcc.8b00296 10.1021/acs.iecr.9b05271 10.1177/0263617417702153 10.1021/acsomega.0c00018 10.1016/j.cattod.2017.08.015 10.1016/j.cej.2018.12.100 10.1021/acs.est.8b01990 10.1007/s11783-017-0914-x 10.5277/ppmp19066 10.3390/catal8030100 10.1021/acs.energyfuels.7b01417 10.3390/catal10121426 10.15199/62.2019.4.5 10.1016/j.cattod.2020.05.036 10.1016/j.apcatb.2017.09.069 10.3390/catal11010052 10.1016/j.micromeso.2017.03.017 10.1021/acs.est.8b00267 10.1039/c3dt53181c 10.3390/ma13102399 10.1016/j.micromeso.2019.01.016 10.1016/j.micromeso.2016.09.040 10.1016/j.mcat.2017.03.007 10.1016/j.apt.2021.02.014 10.3390/nano10112170 10.1016/j.cattod.2010.11.092 10.1016/j.apcatb.2015.01.016 10.1039/D0CY00989J 10.1007/s40825-021-00203-4 10.1016/j.apcatb.2018.06.039 10.1016/S0920-5861(02)00006-8 10.3390/catal10101139 10.1016/S0920-5861(99)00206-0 http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess DeNO(x) MCM-22 Layered MWW zeolites Iron catalysts SO2 poisoning info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftunivpvalencia https://doi.org/10.3390/ijms231810754 2024-01-03T00:07:10Z [EN] The catalytic performance of Fe-catalysts in selective catalytic reduction of nitrogen oxides with ammonia (NH3-SCR) strongly depends on the nature of iron sites. Therefore, we aimed to prepare and investigate the catalytic potential of Fe-MCM-22 with various Si/Fe molar ratios in NH3-SCR. The samples were prepared by the one-pot synthesis method to provide high dispersion of iron and reduce the number of synthesis steps. We have found that the sample with the lowest concentration of Fe exhibited the highest catalytic activity of ca. 100% at 175 degrees C, due to the abundance of well-dispersed isolated iron species. The decrease of Si/Fe limited the formation of microporous structure and resulted in partial amorphization, formation of iron oxide clusters, and emission of N2O during the catalytic reaction. However, an optimal concentration of FexOy oligomers contributed to the decomposition of nitrous oxide within 250-400 degrees C. Moreover, the acidic character of the catalysts was not a key factor determining the high conversion of NO. Additionally, we conducted NH3-SCR catalytic tests over the samples after poisoning with sulfur dioxide (SO2). We observed that SO2 affected the catalytic performance mainly in the low-temperature region, due to the deposition of thermally unstable ammonium sulfates. Agnieszka Szymaszek-Wawryca gratefully acknowledges financial support from the National Science Centre Grant Preludium 19 (no. 2020/37/N/ST5/00186). Urbano Diaz acknowledges the support from Government of Spain through the project PID2020-112590GB-C21/AEI/10.13039/501 100011033. The research results presented in this paper by Monika Motak have been developed with the use of equipment financed from the funds of the "Excellence Initiative-Research University" program at AGH University of Science and Technology. Bogdan Samojeden's research was supported by the program "Excellence initiative-research university" for the AGH University of Science and Technology. Szymaszek-Wawryca, A.; Díaz Morales, UM.; ... Article in Journal/Newspaper samojed* samojed* Politechnical University of Valencia: RiuNet Diaz ENVELOPE(-60.667,-60.667,-63.783,-63.783) Morales ENVELOPE(-55.833,-55.833,-63.000,-63.000) International Journal of Molecular Sciences 23 18 10754 |