Niobium Modification of Au/CeO(2) for Enhanced Catalytic Performance over Benzene Combustion

A novel Au/Nb-CeO(2) was obtained by loading Au to Nb-modified CeO(2) adopting a thermal decomposition method. The modification effect of Nb on the physicochemical properties and performance of Au/CeO(2) for benzene combustion was systematically clarified. The incorporated Nb species are found to be...

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Detalles Bibliográficos
Autores principales: Liu, Zhe, Zhang, Xiaolan, Cai, Ting, Yuan, Jing, Zhao, Kunfeng, Lu, Wenquan, He, Dannong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7828588/
https://www.ncbi.nlm.nih.gov/pubmed/33451121
http://dx.doi.org/10.3390/nano11010189
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author Liu, Zhe
Zhang, Xiaolan
Cai, Ting
Yuan, Jing
Zhao, Kunfeng
Lu, Wenquan
He, Dannong
author_facet Liu, Zhe
Zhang, Xiaolan
Cai, Ting
Yuan, Jing
Zhao, Kunfeng
Lu, Wenquan
He, Dannong
author_sort Liu, Zhe
collection PubMed
description A novel Au/Nb-CeO(2) was obtained by loading Au to Nb-modified CeO(2) adopting a thermal decomposition method. The modification effect of Nb on the physicochemical properties and performance of Au/CeO(2) for benzene combustion was systematically clarified. The incorporated Nb species are found to be present in the two forms of highly-dispersed state and bulk NbO(x) into CeO(2) lattice in the obtained Au/Nb-CeO(2) catalyst. They greatly enlarged the BET surface area, improved the redox property, and strengthened the Au–support interaction. The addition of Nb also promotes catalytic performance of Au/CeO(2), especially high-temperature performance: T(90%) decreases by ca. 40 °C and Au/Nb-CeO(2) exhibits superior stability to Au/CeO(2) at 230 °C. The slightly improved Au dispersion and redox properties resulted in the small increase on initial activity of Au/Nb-CeO(2), but the large BET surface area and the strong Au–support interaction greatly promoted the high-temperature performance improvement of Au/Nb-CeO(2) for benzene combustion reaction.
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spelling pubmed-78285882021-01-25 Niobium Modification of Au/CeO(2) for Enhanced Catalytic Performance over Benzene Combustion Liu, Zhe Zhang, Xiaolan Cai, Ting Yuan, Jing Zhao, Kunfeng Lu, Wenquan He, Dannong Nanomaterials (Basel) Article A novel Au/Nb-CeO(2) was obtained by loading Au to Nb-modified CeO(2) adopting a thermal decomposition method. The modification effect of Nb on the physicochemical properties and performance of Au/CeO(2) for benzene combustion was systematically clarified. The incorporated Nb species are found to be present in the two forms of highly-dispersed state and bulk NbO(x) into CeO(2) lattice in the obtained Au/Nb-CeO(2) catalyst. They greatly enlarged the BET surface area, improved the redox property, and strengthened the Au–support interaction. The addition of Nb also promotes catalytic performance of Au/CeO(2), especially high-temperature performance: T(90%) decreases by ca. 40 °C and Au/Nb-CeO(2) exhibits superior stability to Au/CeO(2) at 230 °C. The slightly improved Au dispersion and redox properties resulted in the small increase on initial activity of Au/Nb-CeO(2), but the large BET surface area and the strong Au–support interaction greatly promoted the high-temperature performance improvement of Au/Nb-CeO(2) for benzene combustion reaction. MDPI 2021-01-13 /pmc/articles/PMC7828588/ /pubmed/33451121 http://dx.doi.org/10.3390/nano11010189 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Zhe
Zhang, Xiaolan
Cai, Ting
Yuan, Jing
Zhao, Kunfeng
Lu, Wenquan
He, Dannong
Niobium Modification of Au/CeO(2) for Enhanced Catalytic Performance over Benzene Combustion
title Niobium Modification of Au/CeO(2) for Enhanced Catalytic Performance over Benzene Combustion
title_full Niobium Modification of Au/CeO(2) for Enhanced Catalytic Performance over Benzene Combustion
title_fullStr Niobium Modification of Au/CeO(2) for Enhanced Catalytic Performance over Benzene Combustion
title_full_unstemmed Niobium Modification of Au/CeO(2) for Enhanced Catalytic Performance over Benzene Combustion
title_short Niobium Modification of Au/CeO(2) for Enhanced Catalytic Performance over Benzene Combustion
title_sort niobium modification of au/ceo(2) for enhanced catalytic performance over benzene combustion
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7828588/
https://www.ncbi.nlm.nih.gov/pubmed/33451121
http://dx.doi.org/10.3390/nano11010189
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