Template Guiding for the Encapsulation of Uniformly Subnanometric Platinum Clusters in Beta‐Zeolites Enabling High Catalytic Activity and Stability. Issue 40 (25th August 2021)

• Record Type: Journal Article
• Authors: Tian, Yajie; Duan, Haonan; Zhang, Bofeng; Gong, Siyuan; Lu, Zongjing; Dai, Lei; Qiao, Congzhen; Liu, Guozhu; Zhao, Yong
• Is Part Of: Angewandte Chemie international edition. Volume 60:Issue 40(2021)
• Page Start: 21713
• Page End: 21717
• Publication Date: 2021-08-25
• Subjects: heterogeneous catalysis -- hydrodeoxygenation -- Pt clusters -- zeolites; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202108059
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Subnanometric metal clusters have attracted extensive attention because of their unique properties as heterogeneous catalysts. However, it is challenging to obtain uniformly distributed metal clusters under synthesis and reaction conditions. Herein, we report a template‐guidance protocol to synthesize subnanometric metal clusters uniformly encapsulated in beta‐zeolite, with the metal ions anchored to the internal channels of the zeolite template via electrostatic interactions. Pt metal clusters with a narrow size range of 0.89 to 1.22 nm have been obtained on the intersectional sites of beta‐zeolite (Pt@beta) with a broad range of Si/Al molar ratios (15–200). The uniformly distributed Pt clusters in Pt@H‐beta are subject to strong electron withdrawal by the zeolite, which promotes transfer of active hydrogen, providing excellent activity and stability in hydrodeoxygenation reactions. A general strategy is thus proposed for the encapsulation of subnanometric metal clusters in zeolites with high thermal stability. Abstract : A template‐guidance protocol was reported for the synthesis of subnanometric metal clusters that are uniformly encapsulated in beta‐zeolite. The metal ions are guided to the internal channels of the zeolite template through electrostatic interactions.