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Ultrafast Encapsulation of Metal Nanoclusters into MFI Zeolite in the Course of Its Crystallization: Catalytic Application for Propane Dehydrogenation
Author(s) -
Zhu Jie,
Osuga Ryota,
Ishikawa Ryo,
Shibata Naoya,
Ikuhara Yuichi,
Kondo Junko N.,
Ogura Masaru,
Yu Jihong,
Wakihara Toru,
Liu Zhendong,
Okubo Tatsuya
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202007044
Subject(s) - nanoclusters , dehydrogenation , crystallization , materials science , catalysis , propene , zeolite , microporous material , selectivity , chemical engineering , propane , metal , nanoreactor , bifunctional , nanotechnology , nanoparticle , chemistry , organic chemistry , metallurgy , composite material , engineering
Encapsulating metal nanoclusters into zeolites combines the superior catalytic activity of the nanoclusters with high stability and unique shape selectivity of the crystalline microporous materials. The preparation of such bifunctional catalysts, however, is often restricted by the mismatching in time scale between the fast formation of nanoclusters and the slow crystallization of zeolites. We herein demonstrate a novel strategy to overcome the mismatching issue, in which the crystallization of zeolites is expedited so as to synchronize it with the rapid formation of nanoclusters. The concept was demonstrated by confining Pt and Sn nanoclusters into a ZSM‐5 (MFI) zeolite in the course of its crystallization, leading to an ultrafast, in situ encapsulation within just 5 min. The Pt/Sn‐ZSM‐5 exhibited exceptional activity and selectivity with stability in the dehydrogenation of propane to propene. This method of ultrafast encapsulation opens up a new avenue for designing and synthesizing composite zeolitic materials with structural and compositional complexity.