journal article·2024-05-15

Solvent-Free Synthesis Enables Encapsulation of Subnanometric FeOx Clusters in Pure Siliceous Zeolites for Efficient Catalytic Oxidation Reactions

Jiajie Ye, Xuan Tang, Lu Cheng, Shoujie Zhang, Wangcheng Zhan, Yanglong Guo, Li Wang, Xiao-Ming Cao, Kuan-Wen Wang, Sheng Dai, Yun Guo

ACS Applied Materials & Interfaces· Volume 16· Issue 19
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Abstract

Metal/metal oxide clusters possess a higher count of unsaturated coordination sites than nanoparticles, providing multiatomic sites that single atoms do not. Encapsulating metal/metal oxide clusters within zeolites is a promising approach for synthesizing and stabilizing these clusters. The unique feature endows the metal clusters with an exceptional catalytic performance in a broad range of catalytic reactions. However, the encapsulation of stable FeO x clusters in zeolite is still challenging, which limits the application of zeolite-encapsulated FeO x clusters in catalysis. Herein, we design a modified solvent-free method to encapsulate FeO x clusters in pure siliceous MFI zeolites (Fe@MFI). It is revealed that the 0.3–0.4 nm subnanometric FeO x clusters are stably encapsulated in the 5/6-membered rings intersectional voids of the pure siliceous MFI zeolites. The encapsulated Fe@MFI catalyst with a Fe loading of 1.4 wt % demonstrates remarkable catalytic activity and recycle stability in the direct oxidation of methane, while also promoting the direct oxidation of cyclohexane, surpassing the performance of conventional zeolite-supported Fe catalysts.
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Research context

OpenAlex topics: Catalytic Processes in Materials Science · Nanomaterials for catalytic reactions · Catalysis and Hydrodesulfurization Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China

Key Laboratory for Advanced Materials, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China

Institute of Materials Science and Engineering, National Central University, Taoyuan 320, Taiwan

Funding

China Association for Science and Technology · National Key Research and Development Program of China · China Postdoctoral Science Foundation · Science and Technology Commission of Shanghai Municipality · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Shanghai Rising-Star Program · Frontiers Science Center for Materiobiology and Dynamic Chemistry · Feringa Nobel Prize Scientist Joint Research Center · Shanghai Post-doctoral Excellence Program

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