Evolution and stabilization of subnanometric metal species in confined space by in situ TEM

Understanding the behavior and dynamic structural transformation of subnanometric metal species under reaction conditions will be helpful for understanding catalytic phenomena and for developing more efficient and stable catalysts based on single atoms and clusters. In this work, the evolution and s...

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Autores principales: Liu, Lichen, Zakharov, Dmitri N., Arenal, Raul, Concepcion, Patricia, Stach, Eric A., Corma, Avelino
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5805776/
https://www.ncbi.nlm.nih.gov/pubmed/29422522
http://dx.doi.org/10.1038/s41467-018-03012-6
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author Liu, Lichen
Zakharov, Dmitri N.
Arenal, Raul
Concepcion, Patricia
Stach, Eric A.
Corma, Avelino
author_facet Liu, Lichen
Zakharov, Dmitri N.
Arenal, Raul
Concepcion, Patricia
Stach, Eric A.
Corma, Avelino
author_sort Liu, Lichen
collection PubMed
description Understanding the behavior and dynamic structural transformation of subnanometric metal species under reaction conditions will be helpful for understanding catalytic phenomena and for developing more efficient and stable catalysts based on single atoms and clusters. In this work, the evolution and stabilization of subnanometric Pt species confined in MCM-22 zeolite has been studied by in situ transmission electron microscopy (TEM). By correlating the results from in situ TEM studies and the results obtained in a continuous fix-bed reactor, it has been possible to delimitate the factors that control the dynamic agglomeration and redispersion behavior of metal species under reaction conditions. The dynamic reversible transformation between atomically dispersed Pt species and clusters/nanoparticles during CO oxidation at different temperatures has been elucidated. It has also been confirmed that subnanometric Pt clusters can be stabilized in MCM-22 crystallites during NO reduction with CO and H(2).
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spelling pubmed-58057762018-02-12 Evolution and stabilization of subnanometric metal species in confined space by in situ TEM Liu, Lichen Zakharov, Dmitri N. Arenal, Raul Concepcion, Patricia Stach, Eric A. Corma, Avelino Nat Commun Article Understanding the behavior and dynamic structural transformation of subnanometric metal species under reaction conditions will be helpful for understanding catalytic phenomena and for developing more efficient and stable catalysts based on single atoms and clusters. In this work, the evolution and stabilization of subnanometric Pt species confined in MCM-22 zeolite has been studied by in situ transmission electron microscopy (TEM). By correlating the results from in situ TEM studies and the results obtained in a continuous fix-bed reactor, it has been possible to delimitate the factors that control the dynamic agglomeration and redispersion behavior of metal species under reaction conditions. The dynamic reversible transformation between atomically dispersed Pt species and clusters/nanoparticles during CO oxidation at different temperatures has been elucidated. It has also been confirmed that subnanometric Pt clusters can be stabilized in MCM-22 crystallites during NO reduction with CO and H(2). Nature Publishing Group UK 2018-02-08 /pmc/articles/PMC5805776/ /pubmed/29422522 http://dx.doi.org/10.1038/s41467-018-03012-6 Text en © The Author(s) 2018 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
Liu, Lichen
Zakharov, Dmitri N.
Arenal, Raul
Concepcion, Patricia
Stach, Eric A.
Corma, Avelino
Evolution and stabilization of subnanometric metal species in confined space by in situ TEM
title Evolution and stabilization of subnanometric metal species in confined space by in situ TEM
title_full Evolution and stabilization of subnanometric metal species in confined space by in situ TEM
title_fullStr Evolution and stabilization of subnanometric metal species in confined space by in situ TEM
title_full_unstemmed Evolution and stabilization of subnanometric metal species in confined space by in situ TEM
title_short Evolution and stabilization of subnanometric metal species in confined space by in situ TEM
title_sort evolution and stabilization of subnanometric metal species in confined space by in situ tem
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5805776/
https://www.ncbi.nlm.nih.gov/pubmed/29422522
http://dx.doi.org/10.1038/s41467-018-03012-6
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