Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction

Copper-based catalysts are highly promising for carbon dioxide (CO2) reduction to carbon monoxide (CO) via the reverse water-gas shift (RWGS) reaction, owing to their efficiency, copper abundance, sustainability and cost-effectiveness. However, enhancing CO2 conversion and CO selectivity requires ac...

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Autores: Lu, Xuan, Yu, Jing, Li, Junshan, Serrano Carreño, M. Isabel|||0000-0002-4996-9280, Arbiol Cobos, Jordi, Cabot, Andreu, Llorca Piqué, Jordi|||0000-0002-7447-9582
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:dnet:upcommonspor::b0fc78b29b55a61c031e44d4fcbc282c
Acceso en línea:https://hdl.handle.net/2117/460318
https://dx.doi.org/10.1016/j.cej.2025.165039
Access Level:acceso abierto
Palabra clave:RWGS
Mechanochemistry
Copper catalysts
DRIFTS
Ceria
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oai_identifier_str oai:dnet:upcommonspor::b0fc78b29b55a61c031e44d4fcbc282c
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spelling Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction Lu, Xuan Yu, Jing Li, Junshan Serrano Carreño, M. Isabel|||0000-0002-4996-9280 Arbiol Cobos, Jordi Cabot, Andreu Llorca Piqué, Jordi|||0000-0002-7447-9582 RWGS Mechanochemistry Copper catalysts DRIFTS Ceria Copper-based catalysts are highly promising for carbon dioxide (CO2) reduction to carbon monoxide (CO) via the reverse water-gas shift (RWGS) reaction, owing to their efficiency, copper abundance, sustainability and cost-effectiveness. However, enhancing CO2 conversion and CO selectivity requires achieving high copper dispersion through a scalable and economical synthesis method. In this study, Cu was combined with CeO2 rods via a mechanochemical ball-milling approach to optimize performance in the RWGS reaction. Comprehensive characterization and kinetic analysis revealed how metal content influences catalyst architecture and activity. Additionally, in situ diffuse reflectance infrared Fourier transform spectroscopy was used to investigate the nature of copper species at different dispersion levels and elucidate the reaction pathway. Notably, the Cu/CeO2 catalyst with a high Cu loading (~5 wt%) and well-dispersed active sites achieved an activity (RCu(CO2)) of 4.8¿10-5 molCO2 mCu-2 s-1 with over 99% CO selectivity at 450°C. These findings provide a robust strategy for developing high-performance Cu-based catalysts for the RWGS reaction. 13 - Acció per al Clima 7 - Energia Assequible i No Contaminant Elsevier https://hdl.handle.net/2117/460318 https://dx.doi.org/10.1016/j.cej.2025.165039
title Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction
spellingShingle Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction
Lu, Xuan
RWGS
Mechanochemistry
Copper catalysts
DRIFTS
Ceria
title_short Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction
title_full Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction
title_fullStr Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction
title_full_unstemmed Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction
title_sort Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction
author Lu, Xuan
author_facet Lu, Xuan
Yu, Jing
Li, Junshan
Serrano Carreño, M. Isabel|||0000-0002-4996-9280
Arbiol Cobos, Jordi
Cabot, Andreu
Llorca Piqué, Jordi|||0000-0002-7447-9582
author_role author
author2 Yu, Jing
Li, Junshan
Serrano Carreño, M. Isabel|||0000-0002-4996-9280
Arbiol Cobos, Jordi
Cabot, Andreu
Llorca Piqué, Jordi|||0000-0002-7447-9582
author2_role author
author
author
author
author
author
topic RWGS
Mechanochemistry
Copper catalysts
DRIFTS
Ceria
topic_facet RWGS
Mechanochemistry
Copper catalysts
DRIFTS
Ceria
description Copper-based catalysts are highly promising for carbon dioxide (CO2) reduction to carbon monoxide (CO) via the reverse water-gas shift (RWGS) reaction, owing to their efficiency, copper abundance, sustainability and cost-effectiveness. However, enhancing CO2 conversion and CO selectivity requires achieving high copper dispersion through a scalable and economical synthesis method. In this study, Cu was combined with CeO2 rods via a mechanochemical ball-milling approach to optimize performance in the RWGS reaction. Comprehensive characterization and kinetic analysis revealed how metal content influences catalyst architecture and activity. Additionally, in situ diffuse reflectance infrared Fourier transform spectroscopy was used to investigate the nature of copper species at different dispersion levels and elucidate the reaction pathway. Notably, the Cu/CeO2 catalyst with a high Cu loading (~5 wt%) and well-dispersed active sites achieved an activity (RCu(CO2)) of 4.8¿10-5 molCO2 mCu-2 s-1 with over 99% CO selectivity at 450°C. These findings provide a robust strategy for developing high-performance Cu-based catalysts for the RWGS reaction.
publishDate 2025
format article
url https://hdl.handle.net/2117/460318
https://dx.doi.org/10.1016/j.cej.2025.165039
language eng
eu_rights_str_mv openAccess
publisher Elsevier
institution Universitat Politècnica de Catalunya (UPC)
collection UPCommons. Portal del coneixement obert de la UPC
reponame_str UPCommons. Portal del coneixement obert de la UPC
instname_str Universitat Politècnica de Catalunya (UPC)
_version_ 1878434185736093696
publishDateSort 2025
author_browse Arbiol Cobos, Jordi
Cabot, Andreu
Li, Junshan
Llorca Piqué, Jordi|||0000-0002-7447-9582
Lu, Xuan
Serrano Carreño, M. Isabel|||0000-0002-4996-9280
Yu, Jing
publisherStr Elsevier
score 6,924472

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