Efficient hydrogen production from ammonia over Ru-Co/SiC catalysts

This study provides a valuable insight into the influence of the order impregnation of ruthenium and cobalt on ß-SiC support as catalysts for efficient green hydrogen production from ammonia. The catalysts were characterized using different techniques such as Temperature Programmed Reduction, X-Ray...

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Authors: Pinzón García, Marina, Martín Martínez, Carlos, Romero Izquierdo, Amaya, Osa Puebla, Ana Raquel de la, Sánchez Paredes, Paula
Format: article
Publication Date:2025
Country:España
Institution:Universidad de Castilla-La Mancha
Repository:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/43641
Online Access:https://hdl.handle.net/10578/43641
Access Level:Open access
Keyword:Ammonia decomposition
Bimetallic
Cobalt
Hydrogen
Ruthenium
Silicon carbide
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spelling Efficient hydrogen production from ammonia over Ru-Co/SiC catalystsPinzón García, MarinaMartín Martínez, CarlosRomero Izquierdo, AmayaOsa Puebla, Ana Raquel de laSánchez Paredes, PaulaAmmonia decompositionBimetallicCobaltHydrogenRutheniumSilicon carbideThis study provides a valuable insight into the influence of the order impregnation of ruthenium and cobalt on ß-SiC support as catalysts for efficient green hydrogen production from ammonia. The catalysts were characterized using different techniques such as Temperature Programmed Reduction, X-Ray Diffraction, Transmission Electron Microscopy and Scanning Electron Microscopy. The addition of Ru clearly changed the reduction profile, decreasing the temperature to obtain metallic species. The catalyst prepared by co-impregnation inhibited the formation of Co silicates, which are very difficult to reduce. Additionally, the metal size was also affected by the order of impregnation, with the co-impregnation method showing the smallest crystallite sizes and the highest hydrogen production. On the other hand, it was found that the 2.5 wt% total metal content catalyst improved the hydrogen production rate by 41 % compared to 5 wt% total metal content at 350 ºC, justifying the use of a lower metal loading. Therefore, the highest activity was achieved with a Ru/Co co-impregnation with a 50/50 wt ratio and a metal loading of 2.5 wt%, which exhibited excellent activity and stability with 95 % conversion over 50 hours of reaction.ELSEVIER202520252025info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://hdl.handle.net/10578/43641Catalysis Today, 2025, 458, 115378reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésSBPLY/21/180501/000165TED2021–131532A-1002022-PRED-20658info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/436412026-05-27T07:36:41Z
dc.title.none.fl_str_mv Efficient hydrogen production from ammonia over Ru-Co/SiC catalysts
title Efficient hydrogen production from ammonia over Ru-Co/SiC catalysts
spellingShingle Efficient hydrogen production from ammonia over Ru-Co/SiC catalysts
Pinzón García, Marina
Ammonia decomposition
Bimetallic
Cobalt
Hydrogen
Ruthenium
Silicon carbide
title_short Efficient hydrogen production from ammonia over Ru-Co/SiC catalysts
title_full Efficient hydrogen production from ammonia over Ru-Co/SiC catalysts
title_fullStr Efficient hydrogen production from ammonia over Ru-Co/SiC catalysts
title_full_unstemmed Efficient hydrogen production from ammonia over Ru-Co/SiC catalysts
title_sort Efficient hydrogen production from ammonia over Ru-Co/SiC catalysts
dc.creator.none.fl_str_mv Pinzón García, Marina
Martín Martínez, Carlos
Romero Izquierdo, Amaya
Osa Puebla, Ana Raquel de la
Sánchez Paredes, Paula
author Pinzón García, Marina
author_facet Pinzón García, Marina
Martín Martínez, Carlos
Romero Izquierdo, Amaya
Osa Puebla, Ana Raquel de la
Sánchez Paredes, Paula
author_role author
author2 Martín Martínez, Carlos
Romero Izquierdo, Amaya
Osa Puebla, Ana Raquel de la
Sánchez Paredes, Paula
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ammonia decomposition
Bimetallic
Cobalt
Hydrogen
Ruthenium
Silicon carbide
topic Ammonia decomposition
Bimetallic
Cobalt
Hydrogen
Ruthenium
Silicon carbide
description This study provides a valuable insight into the influence of the order impregnation of ruthenium and cobalt on ß-SiC support as catalysts for efficient green hydrogen production from ammonia. The catalysts were characterized using different techniques such as Temperature Programmed Reduction, X-Ray Diffraction, Transmission Electron Microscopy and Scanning Electron Microscopy. The addition of Ru clearly changed the reduction profile, decreasing the temperature to obtain metallic species. The catalyst prepared by co-impregnation inhibited the formation of Co silicates, which are very difficult to reduce. Additionally, the metal size was also affected by the order of impregnation, with the co-impregnation method showing the smallest crystallite sizes and the highest hydrogen production. On the other hand, it was found that the 2.5 wt% total metal content catalyst improved the hydrogen production rate by 41 % compared to 5 wt% total metal content at 350 ºC, justifying the use of a lower metal loading. Therefore, the highest activity was achieved with a Ru/Co co-impregnation with a 50/50 wt ratio and a metal loading of 2.5 wt%, which exhibited excellent activity and stability with 95 % conversion over 50 hours of reaction.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10578/43641
url https://hdl.handle.net/10578/43641
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv SBPLY/21/180501/000165
TED2021–131532A-100
2022-PRED-20658
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv ELSEVIER
publisher.none.fl_str_mv ELSEVIER
dc.source.none.fl_str_mv Catalysis Today, 2025, 458, 115378
reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869410289498193920
score 15,223283

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