Concerted Bimetallic Nanocluster Synthesis and Encapsulation via Induced Zeolite Framework Demetallation for Shape and Substrate Selective Heterogeneous Catalysis
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- Department of Chemical System Engineering The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan, Department of Chemical Engineering Massachusetts Institute of Technology 25 Ames Street Cambridge MA 02139 USA
- Department of Chemical Engineering Massachusetts Institute of Technology 25 Ames Street Cambridge MA 02139 USA, Institute of Chemistry University of Campinas PO 6154 Campinas SP 13083-970 Brazil
- Japan Synchrotron Radiation Research Institute/SPring-8 Kouto 1-1-1 Sayo-gun Hyogo 679-5198 Japan
- Department of Chemical System Engineering The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan
- Department of Chemical Engineering Massachusetts Institute of Technology 25 Ames Street Cambridge MA 02139 USA
Abstract Bimetallic nanoparticle encapsulation in microporous zeolite crystals is a promising route for producing catalysts with unprecedented reaction selectivities. Herein, a novel synthetic approach was developed to produce PtZn x nanoclusters encapsulated inside zeolite micropores by introducing Pt 2+ cations into a zincosilicate framework via ion exchange, and subsequent controlled demetallation and alloying with framework Zn. The resulting zeolites featured nanoclusters with sizes of approximately 1 nm, having an interatomic structure corresponding to a PtZn x alloy as confirmed by pair distribution function (PDF) analysis. These materials featured simultaneous shape and substrate specificity demonstrated by the selective production of p ‐chloroaniline from the competitive hydrogenation of p ‐chloronitrobenzene and 1,3‐dimethyl‐5‐nitrobenzene.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- SC0016214
- OSTI ID:
- 1435662
- Journal Information:
- Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 130 Journal Issue: 22; ISSN 0044-8249
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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