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Direct TEM Observation of Vacancy‐Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts

Incorporating hetero‐metal‐atom, e.g., titanium, into zeolite frameworks can enhance the catalytic activity and selectivity in oxidation reactions. However, the rational design of zeolites containing titanium at specific sites is difficult because the precise atomic structure during synthesis proces...

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Autores principales: Li, Junyan, Mayoral, Alvaro, Kubota, Yoshihiro, Inagaki, Satoshi, Yu, Jihong, Terasaki, Osamu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9827827/
https://www.ncbi.nlm.nih.gov/pubmed/36194383
http://dx.doi.org/10.1002/anie.202211196
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author Li, Junyan
Mayoral, Alvaro
Kubota, Yoshihiro
Inagaki, Satoshi
Yu, Jihong
Terasaki, Osamu
author_facet Li, Junyan
Mayoral, Alvaro
Kubota, Yoshihiro
Inagaki, Satoshi
Yu, Jihong
Terasaki, Osamu
author_sort Li, Junyan
collection PubMed
description Incorporating hetero‐metal‐atom, e.g., titanium, into zeolite frameworks can enhance the catalytic activity and selectivity in oxidation reactions. However, the rational design of zeolites containing titanium at specific sites is difficult because the precise atomic structure during synthesis process remained unclear. Here, a titanosilicate with predictable titanium distribution was synthesized by mediating vacancies in a defective MSE‐type zeolite precursor, based on a pre‐designed synthetic route including modification of vacancies followed by titanium insertion, where electron microscopy (EM) plays a key role at each step resolving the atomic structure. Point defects including vacancies in the precursor and titanium incorporated into the vacancy‐related positions have been directly observed. The results provide insights into the role of point defects in zeolites towards the rational synthesis of zeolites with desired microscopic arrangement of catalytically active sites.
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spelling pubmed-98278272023-01-10 Direct TEM Observation of Vacancy‐Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts Li, Junyan Mayoral, Alvaro Kubota, Yoshihiro Inagaki, Satoshi Yu, Jihong Terasaki, Osamu Angew Chem Int Ed Engl Research Articles Incorporating hetero‐metal‐atom, e.g., titanium, into zeolite frameworks can enhance the catalytic activity and selectivity in oxidation reactions. However, the rational design of zeolites containing titanium at specific sites is difficult because the precise atomic structure during synthesis process remained unclear. Here, a titanosilicate with predictable titanium distribution was synthesized by mediating vacancies in a defective MSE‐type zeolite precursor, based on a pre‐designed synthetic route including modification of vacancies followed by titanium insertion, where electron microscopy (EM) plays a key role at each step resolving the atomic structure. Point defects including vacancies in the precursor and titanium incorporated into the vacancy‐related positions have been directly observed. The results provide insights into the role of point defects in zeolites towards the rational synthesis of zeolites with desired microscopic arrangement of catalytically active sites. John Wiley and Sons Inc. 2022-10-26 2022-11-25 /pmc/articles/PMC9827827/ /pubmed/36194383 http://dx.doi.org/10.1002/anie.202211196 Text en © 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Research Articles
Li, Junyan
Mayoral, Alvaro
Kubota, Yoshihiro
Inagaki, Satoshi
Yu, Jihong
Terasaki, Osamu
Direct TEM Observation of Vacancy‐Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts
title Direct TEM Observation of Vacancy‐Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts
title_full Direct TEM Observation of Vacancy‐Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts
title_fullStr Direct TEM Observation of Vacancy‐Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts
title_full_unstemmed Direct TEM Observation of Vacancy‐Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts
title_short Direct TEM Observation of Vacancy‐Mediated Heteroatom Incorporation into a Zeolite Framework: Towards Microscopic Design of Zeolite Catalysts
title_sort direct tem observation of vacancy‐mediated heteroatom incorporation into a zeolite framework: towards microscopic design of zeolite catalysts
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9827827/
https://www.ncbi.nlm.nih.gov/pubmed/36194383
http://dx.doi.org/10.1002/anie.202211196
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