Low-temperature CO oxidation on multicomponent gold based catalysts

In this work the development of gold catalysts, essentially based on γ-alumina with small superficial fraction of Ce-Fe mixed oxides as support for the low temperature CO oxidation is proposed. Characterization results obtained by means of TEM, OSC, XPS, UV-Vis spectroscopy and H(2)-TPR are employed...

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Autores principales: Ramírez Reina, Tomás, Ivanova, Svetlana, Centeno, Miguel A., Odriozola, José A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2013
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3982523/
https://www.ncbi.nlm.nih.gov/pubmed/24790941
http://dx.doi.org/10.3389/fchem.2013.00012
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author Ramírez Reina, Tomás
Ivanova, Svetlana
Centeno, Miguel A.
Odriozola, José A.
author_facet Ramírez Reina, Tomás
Ivanova, Svetlana
Centeno, Miguel A.
Odriozola, José A.
author_sort Ramírez Reina, Tomás
collection PubMed
description In this work the development of gold catalysts, essentially based on γ-alumina with small superficial fraction of Ce-Fe mixed oxides as support for the low temperature CO oxidation is proposed. Characterization results obtained by means of TEM, OSC, XPS, UV-Vis spectroscopy and H(2)-TPR are employed to correlate the activity data with the catalysts composition. The bare γ-alumina supported gold catalyst demonstrates the poorest activity within the series. The addition of CeO(2) or FeO(X) improves the catalytic performance, especially observed for the CeO(2)-FeO(x) mixed oxide doped samples. This enhanced CO oxidation activity was related to the Ce-Fe interaction producing materials with promoted redox properties and therefore oxidation activity.
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spelling pubmed-39825232014-04-30 Low-temperature CO oxidation on multicomponent gold based catalysts Ramírez Reina, Tomás Ivanova, Svetlana Centeno, Miguel A. Odriozola, José A. Front Chem Chemistry In this work the development of gold catalysts, essentially based on γ-alumina with small superficial fraction of Ce-Fe mixed oxides as support for the low temperature CO oxidation is proposed. Characterization results obtained by means of TEM, OSC, XPS, UV-Vis spectroscopy and H(2)-TPR are employed to correlate the activity data with the catalysts composition. The bare γ-alumina supported gold catalyst demonstrates the poorest activity within the series. The addition of CeO(2) or FeO(X) improves the catalytic performance, especially observed for the CeO(2)-FeO(x) mixed oxide doped samples. This enhanced CO oxidation activity was related to the Ce-Fe interaction producing materials with promoted redox properties and therefore oxidation activity. Frontiers Media S.A. 2013-09-06 /pmc/articles/PMC3982523/ /pubmed/24790941 http://dx.doi.org/10.3389/fchem.2013.00012 Text en Copyright © 2013 Ramirez Reina, Ivanova, Centeno and Odriozola. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Ramírez Reina, Tomás
Ivanova, Svetlana
Centeno, Miguel A.
Odriozola, José A.
Low-temperature CO oxidation on multicomponent gold based catalysts
title Low-temperature CO oxidation on multicomponent gold based catalysts
title_full Low-temperature CO oxidation on multicomponent gold based catalysts
title_fullStr Low-temperature CO oxidation on multicomponent gold based catalysts
title_full_unstemmed Low-temperature CO oxidation on multicomponent gold based catalysts
title_short Low-temperature CO oxidation on multicomponent gold based catalysts
title_sort low-temperature co oxidation on multicomponent gold based catalysts
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3982523/
https://www.ncbi.nlm.nih.gov/pubmed/24790941
http://dx.doi.org/10.3389/fchem.2013.00012
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AT ivanovasvetlana lowtemperaturecooxidationonmulticomponentgoldbasedcatalysts
AT centenomiguela lowtemperaturecooxidationonmulticomponentgoldbasedcatalysts
AT odriozolajosea lowtemperaturecooxidationonmulticomponentgoldbasedcatalysts

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