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

Journal Article · · Nature Communications
 [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)

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.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1436258
Report Number(s):
BNL-203609-2018-JAAM
Journal Information:
Nature Communications, Vol. 9, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 119 works
Citation information provided by
Web of Science

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Harnessing the Wisdom in Colloidal Chemistry to Make Stable Single-Atom Catalysts journal July 2018
Static Regulation and Dynamic Evolution of Single‐Atom Catalysts in Thermal Catalytic Reactions journal November 2018
Noble Metal Particles Confined in Zeolites: Synthesis, Characterization, and Applications journal June 2019
In Situ Transmission Electron Microscopy on Energy‐Related Catalysis journal December 2019
Selective steam reforming of n ‐dodecane over stable subnanometric NiPt clusters encapsulated in Silicalite‐1 zeolite journal January 2020
Synthesis of Densely Packaged, Ultrasmall Pt 0 2 Clusters within a Thioether-Functionalized MOF: Catalytic Activity in Industrial Reactions at Low Temperature journal April 2018
Synthesis of Densely Packaged, Ultrasmall Pt 0 2 Clusters within a Thioether-Functionalized MOF: Catalytic Activity in Industrial Reactions at Low Temperature journal April 2018
Characterization of Metal‐zeolite Composite Catalysts: Determining the Environment of the Active Phase journal April 2020
Non defect-stabilized thermally stable single-atom catalyst journal January 2019
Regioselective generation and reactivity control of subnanometric platinum clusters in zeolites for high-temperature catalysis journal July 2019
Generation of gold nanoclusters encapsulated in an MCM-22 zeolite for the aerobic oxidation of cyclohexane journal January 2019
Platinum single-atom catalysts: a comparative review towards effective characterization journal January 2019
Atmosphere-dependent stability and mobility of catalytic Pt single atoms and clusters on γ-Al 2 O 3 journal January 2019
In situ observations of the structural dynamics of platinum–cobalt–hydroxide nanocatalysts under CO oxidation journal January 2020
Promotion of Pt/CeO 2 catalyst by hydrogen treatment for low-temperature CO oxidation journal January 2019
Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles journal April 2018
Low-Temperature Catalytic NO Reduction with CO by Subnanometric Pt Clusters journal October 2019