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

doi:10.1002/anie.202007044

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

Angew Chem Int Ed Engl. 2020 Oct 26;59(44):19669-19674. doi: 10.1002/anie.202007044. Epub 2020 Aug 13.

Authors

Jie Zhu¹, Ryota Osuga², Ryo Ishikawa^{3

4}, Naoya Shibata³, Yuichi Ikuhara³, Junko N Kondo², Masaru Ogura⁵, Jihong Yu⁶, Toru Wakihara^{1

3}, Zhendong Liu¹, Tatsuya Okubo¹

Affiliations

¹ Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
² Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R1-10 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan.
³ Institute of Engineering Innovation, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-8656, Japan.
⁴ PRESTO (Japan) Science and Technology Agency, Kawaguchi, Saitama, 332-0012, Japan.
⁵ Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan.
⁶ State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun, 130012, China.

PMID: 32602591
DOI: 10.1002/anie.202007044

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.

Keywords: bifunctional catalyst; heterogeneous catalysis; nanoclusters; propane dehydrogenation; zeolites.

Abstract

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