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Dynamic structure of active sites in ceria-supported Pt catalysts for the water gas shift reaction
Oxide-supported noble metal catalysts have been extensively studied for decades for the water gas shift (WGS) reaction, a catalytic transformation central to a host of large volume processes that variously utilize or produce hydrogen. There remains considerable uncertainty as to how the specific fea...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7876036/ https://www.ncbi.nlm.nih.gov/pubmed/33568629 http://dx.doi.org/10.1038/s41467-021-21132-4 |
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author | Li, Yuanyuan Kottwitz, Matthew Vincent, Joshua L. Enright, Michael J. Liu, Zongyuan Zhang, Lihua Huang, Jiahao Senanayake, Sanjaya D. Yang, Wei-Chang D. Crozier, Peter A. Nuzzo, Ralph G. Frenkel, Anatoly I. |
author_facet | Li, Yuanyuan Kottwitz, Matthew Vincent, Joshua L. Enright, Michael J. Liu, Zongyuan Zhang, Lihua Huang, Jiahao Senanayake, Sanjaya D. Yang, Wei-Chang D. Crozier, Peter A. Nuzzo, Ralph G. Frenkel, Anatoly I. |
author_sort | Li, Yuanyuan |
collection | PubMed |
description | Oxide-supported noble metal catalysts have been extensively studied for decades for the water gas shift (WGS) reaction, a catalytic transformation central to a host of large volume processes that variously utilize or produce hydrogen. There remains considerable uncertainty as to how the specific features of the active metal-support interfacial bonding—perhaps most importantly the temporal dynamic changes occurring therein—serve to enable high activity and selectivity. Here we report the dynamic characteristics of a Pt/CeO(2) system at the atomic level for the WGS reaction and specifically reveal the synergistic effects of metal-support bonding at the perimeter region. We find that the perimeter Pt(0) − O vacancy−Ce(3+) sites are formed in the active structure, transformed at working temperatures and their appearance regulates the adsorbate behaviors. We find that the dynamic nature of this site is a key mechanistic step for the WGS reaction. |
format | Online Article Text |
id | pubmed-7876036 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-78760362021-02-24 Dynamic structure of active sites in ceria-supported Pt catalysts for the water gas shift reaction Li, Yuanyuan Kottwitz, Matthew Vincent, Joshua L. Enright, Michael J. Liu, Zongyuan Zhang, Lihua Huang, Jiahao Senanayake, Sanjaya D. Yang, Wei-Chang D. Crozier, Peter A. Nuzzo, Ralph G. Frenkel, Anatoly I. Nat Commun Article Oxide-supported noble metal catalysts have been extensively studied for decades for the water gas shift (WGS) reaction, a catalytic transformation central to a host of large volume processes that variously utilize or produce hydrogen. There remains considerable uncertainty as to how the specific features of the active metal-support interfacial bonding—perhaps most importantly the temporal dynamic changes occurring therein—serve to enable high activity and selectivity. Here we report the dynamic characteristics of a Pt/CeO(2) system at the atomic level for the WGS reaction and specifically reveal the synergistic effects of metal-support bonding at the perimeter region. We find that the perimeter Pt(0) − O vacancy−Ce(3+) sites are formed in the active structure, transformed at working temperatures and their appearance regulates the adsorbate behaviors. We find that the dynamic nature of this site is a key mechanistic step for the WGS reaction. Nature Publishing Group UK 2021-02-10 /pmc/articles/PMC7876036/ /pubmed/33568629 http://dx.doi.org/10.1038/s41467-021-21132-4 Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Li, Yuanyuan Kottwitz, Matthew Vincent, Joshua L. Enright, Michael J. Liu, Zongyuan Zhang, Lihua Huang, Jiahao Senanayake, Sanjaya D. Yang, Wei-Chang D. Crozier, Peter A. Nuzzo, Ralph G. Frenkel, Anatoly I. Dynamic structure of active sites in ceria-supported Pt catalysts for the water gas shift reaction |
title | Dynamic structure of active sites in ceria-supported Pt catalysts for the water gas shift reaction |
title_full | Dynamic structure of active sites in ceria-supported Pt catalysts for the water gas shift reaction |
title_fullStr | Dynamic structure of active sites in ceria-supported Pt catalysts for the water gas shift reaction |
title_full_unstemmed | Dynamic structure of active sites in ceria-supported Pt catalysts for the water gas shift reaction |
title_short | Dynamic structure of active sites in ceria-supported Pt catalysts for the water gas shift reaction |
title_sort | dynamic structure of active sites in ceria-supported pt catalysts for the water gas shift reaction |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7876036/ https://www.ncbi.nlm.nih.gov/pubmed/33568629 http://dx.doi.org/10.1038/s41467-021-21132-4 |
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