The Mosaic Structure of Zeolite Crystals

Zeolites are widely used in many commercial processes, mostly as catalysts or adsorbents. Understanding their intimate structure at the nanoscale is the key to control their properties and design the best materials for their ever increasing uses. Herein, we report a new and controllable fluoride tre...

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Veröffentlicht in:Angewandte Chemie International Edition Jg. 55; H. 48; S. 15049 - 15052
Hauptverfasser: Qin, Zhengxing, Melinte, Georgian, Gilson, Jean-Pierre, Jaber, Maguy, Bozhilov, Krassimir, Boullay, Philippe, Mintova, Svetlana, Ersen, Ovidiu, Valtchev, Valentin
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Germany Blackwell Publishing Ltd 21.11.2016
Wiley Subscription Services, Inc
Wiley-VCH Verlag
Ausgabe:International ed. in English
Schlagworte:
Adsorbents
Cations
Chemical Sciences
crystal engineering
Crystals
fluoride etching
nanostructures
Zeolites
fluoride etching
zeolites
crystal engineering
nanostructures
Crystal engineering
Nanostructures
Fluoride etching
Zeolites
ISSN:1433-7851, 1521-3773, 1521-3773
Online-Zugang:Volltext
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Zusammenfassung:Zeolites are widely used in many commercial processes, mostly as catalysts or adsorbents. Understanding their intimate structure at the nanoscale is the key to control their properties and design the best materials for their ever increasing uses. Herein, we report a new and controllable fluoride treatment for the non‐discriminate extraction of zeolite framework cations. This sheds new light on the sub‐structure of commercially relevant zeolite crystals: they are segmented along defect zones exposing numerous nanometer‐sized crystalline domains, separated by low‐angle boundaries, in what were apparent single‐crystals. The concentration, morphology, and distribution of such domains analyzed by electron tomography indicate that this is a common phenomenon in zeolites, independent of their structure and chemical composition. This is a milestone to better understand their growth mechanism and rationally design superior catalysts and adsorbents. Etch it out: A controlled fluoride medium treatment is used to expose the local structure of zeolite crystals. Unexpectedly high concentrations of nanometer‐sized crystalline domains, separated by low‐angle boundaries, were discovered.
Bibliographie:ark:/67375/WNG-F16FTQW4-W
ArticleID:ANIE201608417
istex:0B55352399ED54D10FC4D8A170716DD8BA5C2810
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1433-7851
1521-3773
1521-3773
DOI:10.1002/anie.201608417