How bimetallic CoMo carbides and nitrides improve CO oxidation

CO elimination is an important step for the proper management of gaseous effluents from various processes, thus avoiding adverse impacts on the environment and human health. In this study, different bimetallic Al2O3-sup-ported CoMo catalysts have been developed, characterized, and tested in the CO o...

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Autores: Villasana, Yanet, García-Macedo, Jorge A., Navarro-Puyuelo, Andrea, Boujnah, Mourad, Reyero, Inés, Lara-García, Hugo A., Muñiz, Jesús, Bimbela, Fernando, Gandía, Luis M., Brito, Joaquin Luis, Méndez, Franklin J.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:Ecuador
Institución:Universidad Regional Amazónica
Repositorio:Repositorio Universidad Regional Amazónica
OAI Identifier:oai:repositorio.ikiam.edu.ec:RD_IKIAM/745
Acceso en línea:https://doi.org/10.1016/j.jece.2023.111478
http://repositorio.ikiam.edu.ec/jspui/handle/RD_IKIAM/745
Access Level:acceso abierto
Palabra clave:Carbides
CO oxidation
CoMo-based catalysts
Nitrides
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spelling How bimetallic CoMo carbides and nitrides improve CO oxidationVillasana, YanetGarcía-Macedo, Jorge A.Navarro-Puyuelo, AndreaBoujnah, MouradReyero, InésLara-García, Hugo A.Muñiz, JesúsBimbela, FernandoGandía, Luis M.Brito, Joaquin LuisMéndez, Franklin J.CarbidesCO oxidationCoMo-based catalystsNitridesCO elimination is an important step for the proper management of gaseous effluents from various processes, thus avoiding adverse impacts on the environment and human health. In this study, different bimetallic Al2O3-sup-ported CoMo catalysts have been developed, characterized, and tested in the CO oxidation reaction, based on their respective oxides, carbides, and nitrides phases. The parent CoMo-oxide catalyst (CoMo) was prepared by impregnation and then transformed to its carburized (CoMoC) and nitrided (CoMoN) forms using temperature-programmed reaction methods under controlled atmospheres of CH4/H2 and NH3, respectively. The catalytic results demonstrate that the CoMoC catalyst exhibits higher activity compared to its CoMoN counterpart, and both are more active than the parent CoMo catalyst. Furthermore, the reduction temperature and space velocity were key process factors, which notably influenced activity and kinetic parameters, while the increase of reduction time does not seem to improve catalytic behavior. These results were associated with a better metal dispersion, and relatively higher reduction grade and metallic surface area on the carbides and nitrides, opening the possibility that new adsorption sites may be created. The catalytic results compare favorably with other non-noble metal catalysts, such as Cr-, Cu-, Fe-, and Ni-based samples, and highlight the potential of using carbides and nitrides as alternative formulations to enhance the performance of CO oxidation.Scopus2024-01-24T19:45:37Z2024-01-24T19:45:37Z2023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfVillasana, Y., García-Macedo, J. A., Navarro-Puyuelo, A., Boujnah, M., Reyero, I., Lara-García, H. A., Muñiz, J., Bimbela, F., Gandía, L. M., Brito, J. L., & Méndez, F. J. (2023). How bimetallic CoMo carbides and nitrides improve CO oxidation. Journal of Environmental Chemical Engineering, 11(6), 111478. https://doi.org/10.1016/j.jece.2023.1114782213-3437https://doi.org/10.1016/j.jece.2023.111478http://repositorio.ikiam.edu.ec/jspui/handle/RD_IKIAM/745esPRODUCCIÓN CIENTÍFICA-ARTÍCULO CIENTÍFICO;A-IKIAM-000490info:eu-repo/semantics/openAccessreponame:Repositorio Universidad Regional Amazónicainstname:Universidad Regional Amazónicainstacron:IKIAM2024-01-25T08:00:32Zoai:repositorio.ikiam.edu.ec:RD_IKIAM/745Institucionalhttps://repositorio.ikiam.edu.ec/Universidad públicahttps://www.ikiam.edu.ec/https://repositorio.ikiam.edu.ec/oaiEcuador...opendoar:02024-01-25T08:00:32falseInstitucionalhttps://repositorio.ikiam.edu.ec/Universidad públicahttps://www.ikiam.edu.ec/https://repositorio.ikiam.edu.ec/oai.Ecuador...opendoar:02024-01-25T08:00:32Repositorio Universidad Regional Amazónica - Universidad Regional Amazónicafalse
dc.title.none.fl_str_mv How bimetallic CoMo carbides and nitrides improve CO oxidation
title How bimetallic CoMo carbides and nitrides improve CO oxidation
spellingShingle How bimetallic CoMo carbides and nitrides improve CO oxidation
Villasana, Yanet
Carbides
CO oxidation
CoMo-based catalysts
Nitrides
title_short How bimetallic CoMo carbides and nitrides improve CO oxidation
title_full How bimetallic CoMo carbides and nitrides improve CO oxidation
title_fullStr How bimetallic CoMo carbides and nitrides improve CO oxidation
title_full_unstemmed How bimetallic CoMo carbides and nitrides improve CO oxidation
title_sort How bimetallic CoMo carbides and nitrides improve CO oxidation
dc.creator.none.fl_str_mv Villasana, Yanet
García-Macedo, Jorge A.
Navarro-Puyuelo, Andrea
Boujnah, Mourad
Reyero, Inés
Lara-García, Hugo A.
Muñiz, Jesús
Bimbela, Fernando
Gandía, Luis M.
Brito, Joaquin Luis
Méndez, Franklin J.
author Villasana, Yanet
author_facet Villasana, Yanet
García-Macedo, Jorge A.
Navarro-Puyuelo, Andrea
Boujnah, Mourad
Reyero, Inés
Lara-García, Hugo A.
Muñiz, Jesús
Bimbela, Fernando
Gandía, Luis M.
Brito, Joaquin Luis
Méndez, Franklin J.
author_role author
author2 García-Macedo, Jorge A.
Navarro-Puyuelo, Andrea
Boujnah, Mourad
Reyero, Inés
Lara-García, Hugo A.
Muñiz, Jesús
Bimbela, Fernando
Gandía, Luis M.
Brito, Joaquin Luis
Méndez, Franklin J.
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Carbides
CO oxidation
CoMo-based catalysts
Nitrides
topic Carbides
CO oxidation
CoMo-based catalysts
Nitrides
description CO elimination is an important step for the proper management of gaseous effluents from various processes, thus avoiding adverse impacts on the environment and human health. In this study, different bimetallic Al2O3-sup-ported CoMo catalysts have been developed, characterized, and tested in the CO oxidation reaction, based on their respective oxides, carbides, and nitrides phases. The parent CoMo-oxide catalyst (CoMo) was prepared by impregnation and then transformed to its carburized (CoMoC) and nitrided (CoMoN) forms using temperature-programmed reaction methods under controlled atmospheres of CH4/H2 and NH3, respectively. The catalytic results demonstrate that the CoMoC catalyst exhibits higher activity compared to its CoMoN counterpart, and both are more active than the parent CoMo catalyst. Furthermore, the reduction temperature and space velocity were key process factors, which notably influenced activity and kinetic parameters, while the increase of reduction time does not seem to improve catalytic behavior. These results were associated with a better metal dispersion, and relatively higher reduction grade and metallic surface area on the carbides and nitrides, opening the possibility that new adsorption sites may be created. The catalytic results compare favorably with other non-noble metal catalysts, such as Cr-, Cu-, Fe-, and Ni-based samples, and highlight the potential of using carbides and nitrides as alternative formulations to enhance the performance of CO oxidation.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024-01-24T19:45:37Z
2024-01-24T19:45:37Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Villasana, Y., García-Macedo, J. A., Navarro-Puyuelo, A., Boujnah, M., Reyero, I., Lara-García, H. A., Muñiz, J., Bimbela, F., Gandía, L. M., Brito, J. L., & Méndez, F. J. (2023). How bimetallic CoMo carbides and nitrides improve CO oxidation. Journal of Environmental Chemical Engineering, 11(6), 111478. https://doi.org/10.1016/j.jece.2023.111478
2213-3437
https://doi.org/10.1016/j.jece.2023.111478
http://repositorio.ikiam.edu.ec/jspui/handle/RD_IKIAM/745
identifier_str_mv Villasana, Y., García-Macedo, J. A., Navarro-Puyuelo, A., Boujnah, M., Reyero, I., Lara-García, H. A., Muñiz, J., Bimbela, F., Gandía, L. M., Brito, J. L., & Méndez, F. J. (2023). How bimetallic CoMo carbides and nitrides improve CO oxidation. Journal of Environmental Chemical Engineering, 11(6), 111478. https://doi.org/10.1016/j.jece.2023.111478
2213-3437
url https://doi.org/10.1016/j.jece.2023.111478
http://repositorio.ikiam.edu.ec/jspui/handle/RD_IKIAM/745
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language_invalid_str_mv es
dc.relation.none.fl_str_mv PRODUCCIÓN CIENTÍFICA-ARTÍCULO CIENTÍFICO;A-IKIAM-000490
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Scopus
publisher.none.fl_str_mv Scopus
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repository.name.fl_str_mv Repositorio Universidad Regional Amazónica - Universidad Regional Amazónica
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