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

Abstract

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. Here, the dynamic reversible transformation between atomically dispersed Pt species and clusters/nanoparticles during CO oxidation at different temperatures has been elucidated.Ithas also been confirmed that subnanometric Pt clusters can be stabilized in MCM-22 crystallites during NO reduction with CO and H2.

Authors:
 [1];  [2]; ORCiD logo [3];  [1];  [2];  [1]
  1. Univ. Politecnica de Valencia-Consejo Superior de Investigaciones Cientificas (UPV-CSIC), Valencia (Spain)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Univ. de Zaragoza, Zaragoza (Spain)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1436258
Report Number(s):
BNL-203609-2018-JAAM
Journal ID: ISSN 2041-1723
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; transmission electron microscopy; catalysis; metal clusters; zeolite; dynamic structural transformations; CO oxidation; Pt clusters; NO reduction

Citation Formats

Liu, Lichen, Zakharov, Dmitri N., Arenal, Raul, Concepcion, Patricia, Stach, Eric A., and Corma, Avelino. Evolution and stabilization of subnanometric metal species in confined space by in situ TEM. United States: N. p., 2018. Web. doi:10.1038/s41467-018-03012-6.
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. United States. doi:10.1038/s41467-018-03012-6.
Liu, Lichen, Zakharov, Dmitri N., Arenal, Raul, Concepcion, Patricia, Stach, Eric A., and Corma, Avelino. Thu . "Evolution and stabilization of subnanometric metal species in confined space by in situ TEM". United States. doi:10.1038/s41467-018-03012-6. https://www.osti.gov/servlets/purl/1436258.
@article{osti_1436258,
title = {Evolution and stabilization of subnanometric metal species in confined space by in situ TEM},
author = {Liu, Lichen and Zakharov, Dmitri N. and Arenal, Raul and Concepcion, Patricia and Stach, Eric A. and Corma, Avelino},
abstractNote = {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. Here, the dynamic reversible transformation between atomically dispersed Pt species and clusters/nanoparticles during CO oxidation at different temperatures has been elucidated.Ithas also been confirmed that subnanometric Pt clusters can be stabilized in MCM-22 crystallites during NO reduction with CO and H2.},
doi = {10.1038/s41467-018-03012-6},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {2018},
month = {2}
}

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Cited by: 14 works
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    Works referencing / citing this record:

    Synthesis of Densely Packaged, Ultrasmall Pt 0 2 Clusters within a Thioether-Functionalized MOF: Catalytic Activity in Industrial Reactions at Low Temperature
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