Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions
We have synthesized and tested a highly active Cu doped mesoporous CeO2 catalyst system for the low temperature water-gas shift (WGS) reaction. While typical oxide-supported copper WGS catalysts are characterized by high copper loadings (30-40%), the morphological properties of the mesoporous CeO2 m...
| Autores: | , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/108133 |
| Acceso en línea: | https://hdl.handle.net/2117/108133 https://dx.doi.org/10.1039/c7cp02378b |
| Access Level: | acceso abierto |
| Palabra clave: | Carbon monoxide Expansion (Heat) Oxides Catalysts Monòxid de carboni Catalitzadors Òxids Àrees temàtiques de la UPC::Enginyeria química |
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Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactionsVovchock, DimitriyGuild, Curtis J.Llorca Piqué, Jordi|||0000-0002-7447-9582Xu, WenqianJafari, TaherehToloueinia, PantehaKriz, David A.Palomino, Robert M.Waluyo, IradwikanariRodriguez, Jose A.Suib, Steven L.Senanayake, S. D.Carbon monoxideExpansion (Heat)OxidesCatalystsMonòxid de carboniCatalitzadorsÒxidsÀrees temàtiques de la UPC::Enginyeria químicaWe have synthesized and tested a highly active Cu doped mesoporous CeO2 catalyst system for the low temperature water-gas shift (WGS) reaction. While typical oxide-supported copper WGS catalysts are characterized by high copper loadings (30-40%), the morphological properties of the mesoporous CeO2 material enable high catalytic activity at copper loadings as low as 1%. Operando X-ray diffraction, in situ X-ray absorption near-edge structure spectroscopy (XANES), and operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) methods were used to probe the interactions between the metal and mesoporous oxide components under reaction conditions. Copper was observed to undergo reduction from oxide to metal under WGS conditions at 150 °C, while the CeO2 lattice was observed to expand upon heating, indicating Ce3+ formation correlated with CO2 production. The active state of the catalysts was confirmed by in situ XANES to contain Cu0 and partially reduced CeO2. DRIFTS analysis revealed carboxyl species bound to copper during reduction, as well as formate and carbonate surface species on ceria. Lower concentrations of copper were observed to foster enhanced metal-support interactions.Peer Reviewed20172017-06-2020172017-09-29journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/108133https://dx.doi.org/10.1039/c7cp02378breponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1081332026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions |
| title |
Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions |
| spellingShingle |
Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions Vovchock, Dimitriy Carbon monoxide Expansion (Heat) Oxides Catalysts Monòxid de carboni Catalitzadors Òxids Àrees temàtiques de la UPC::Enginyeria química |
| title_short |
Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions |
| title_full |
Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions |
| title_fullStr |
Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions |
| title_full_unstemmed |
Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions |
| title_sort |
Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions |
| dc.creator.none.fl_str_mv |
Vovchock, Dimitriy Guild, Curtis J. Llorca Piqué, Jordi|||0000-0002-7447-9582 Xu, Wenqian Jafari, Tahereh Toloueinia, Panteha Kriz, David A. Palomino, Robert M. Waluyo, Iradwikanari Rodriguez, Jose A. Suib, Steven L. Senanayake, S. D. |
| author |
Vovchock, Dimitriy |
| author_facet |
Vovchock, Dimitriy Guild, Curtis J. Llorca Piqué, Jordi|||0000-0002-7447-9582 Xu, Wenqian Jafari, Tahereh Toloueinia, Panteha Kriz, David A. Palomino, Robert M. Waluyo, Iradwikanari Rodriguez, Jose A. Suib, Steven L. Senanayake, S. D. |
| author_role |
author |
| author2 |
Guild, Curtis J. Llorca Piqué, Jordi|||0000-0002-7447-9582 Xu, Wenqian Jafari, Tahereh Toloueinia, Panteha Kriz, David A. Palomino, Robert M. Waluyo, Iradwikanari Rodriguez, Jose A. Suib, Steven L. Senanayake, S. D. |
| author2_role |
author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Carbon monoxide Expansion (Heat) Oxides Catalysts Monòxid de carboni Catalitzadors Òxids Àrees temàtiques de la UPC::Enginyeria química |
| topic |
Carbon monoxide Expansion (Heat) Oxides Catalysts Monòxid de carboni Catalitzadors Òxids Àrees temàtiques de la UPC::Enginyeria química |
| description |
We have synthesized and tested a highly active Cu doped mesoporous CeO2 catalyst system for the low temperature water-gas shift (WGS) reaction. While typical oxide-supported copper WGS catalysts are characterized by high copper loadings (30-40%), the morphological properties of the mesoporous CeO2 material enable high catalytic activity at copper loadings as low as 1%. Operando X-ray diffraction, in situ X-ray absorption near-edge structure spectroscopy (XANES), and operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) methods were used to probe the interactions between the metal and mesoporous oxide components under reaction conditions. Copper was observed to undergo reduction from oxide to metal under WGS conditions at 150 °C, while the CeO2 lattice was observed to expand upon heating, indicating Ce3+ formation correlated with CO2 production. The active state of the catalysts was confirmed by in situ XANES to contain Cu0 and partially reduced CeO2. DRIFTS analysis revealed carboxyl species bound to copper during reduction, as well as formate and carbonate surface species on ceria. Lower concentrations of copper were observed to foster enhanced metal-support interactions. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017 2017-06-20 2017 2017-09-29 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AM http://purl.org/coar/version/c_ab4af688f83e57aa |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2117/108133 https://dx.doi.org/10.1039/c7cp02378b |
| url |
https://hdl.handle.net/2117/108133 https://dx.doi.org/10.1039/c7cp02378b |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
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reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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Universitat Politècnica de Catalunya (UPC) |
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UPCommons. Portal del coneixement obert de la UPC |
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UPCommons. Portal del coneixement obert de la UPC |
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1869424649146728448 |
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15.300719 |