Novel Strategy for the Synthesis of Ultra‐Stable Single‐Site Mo‐ZSM‐5 Zeolite Nanocrystals

The current energy transition presents many technological challenges, such as the development of highly stable catalysts. Herein, we report a novel “top‐down” synthesis approach for preparation of a single‐site Mo‐containing nanosized ZSM‐5 zeolite which has atomically dispersed framework‐molybdenum...

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Published in:Angewandte Chemie International Edition 2020-10, Vol.59 (44), p.19553-19560
Main Authors: Konnov, Stanislav V., Dubray, Florent, Clatworthy, Edwin B., Kouvatas, Cassandre, Gilson, Jean‐Pierre, Dath, Jean‐Pierre, Minoux, Delphine, Aquino, Cindy, Valtchev, Valentin, Moldovan, Simona, Koneti, Siddardha, Nesterenko, Nikolai, Mintova, Svetlana
Format: Article
Language:English
Subjects:
Catalysts
Catalytic converters
Chemical Sciences
Crystal defects
Crystals
Dispersion
Energy transition
Extreme values
hydrogen production
Material chemistry
methane conversion
Microscopic analysis
Molybdenum
molybdenum single-sites
Nanocrystals
Point defects
Structural integrity
thermal stability
Zeolites
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Summary:The current energy transition presents many technological challenges, such as the development of highly stable catalysts. Herein, we report a novel “top‐down” synthesis approach for preparation of a single‐site Mo‐containing nanosized ZSM‐5 zeolite which has atomically dispersed framework‐molybdenum homogenously distributed through the zeolite crystals. The introduction of Mo heals most of the native point defects in the zeolite structure resulting in an extremely stable material. The important features of this single‐site Mo‐containing ZSM‐5 zeolite are provided by an in‐depth spectroscopic and microscopic analysis. The material demonstrates superior thermal (up to 1000 °C), hydrothermal (steaming), and catalytic (converting methane to hydrogen and higher hydrocarbons) stability, maintaining the atomically disperse Mo, structural integrity of the zeolite, and preventing the formation of silanols. A single‐site Mo‐containing nanosized ZSM‐5 zeolite with atomically dispersed framework‐molybdenum is synthesized. The zeolite displays superior stability, maintaining the atomically dispersed Mo, structural integrity of the zeolite, and preventing the formation of silanols.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202006524