Ultrafast Encapsulation of Metal Nanoclusters into MFI Zeolite in the Course of Its Crystallization: Catalytic Application for Propane Dehydrogenation

Jie Zhu, Ryota Osuga, Ryo Ishikawa, Naoya Shibata, Yuichi Ikuhara, Junko N. Kondo, Masaru Ogura, Jihong Yu, Toru Wakihara, Zhendong Liu, Tatsuya Okubo

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)19669-19674
Number of pages6
JournalAngewandte Chemie - International Edition
Volume59
Issue number44
DOIs
Publication statusPublished - 2020 Oct 26
Externally publishedYes

Keywords

  • bifunctional catalyst
  • heterogeneous catalysis
  • nanoclusters
  • propane dehydrogenation
  • zeolites

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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