文献类型：期刊文献

英文题名：Solvent-Free Synthesis Enables Encapsulation of Subnanometric FeO x Clusters in Pure Siliceous Zeolites for Efficient Catalytic Oxidation Reactions

作者：Ye, Jiajie[1];Tang, Xuan[1,2];Cheng, Lu[1];Zhang, Shoujie[1];Zhan, Wangcheng[1];Guo, Yanglong[1];Wang, Li[1];Cao, Xiao-Ming[1];Wang, Kuan-Wen[3];Dai, Sheng[2];Guo, Yun[1]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, State key Lab green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan 320, Taiwan

年份：2024

卷号：16

期号：19

起止页码：24691

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20241916053102);WOS:【SCI-EXPANDED(收录号:WOS:001227582000001)】；

基金：This work was supported by the National Key Research and Development Program of China (2022YFB3504200), the National Natural Science Foundation of China (U21A20326, 22376062, and 22306063), the Young Elite Scientists Sponsorship Program by CAST (YESS20230258), the China Postdoctoral Science Foundation (2022M721144), the Shanghai Postdoctoral Excellence Program (2022165), the Shanghai Sailing Program (23YF1409100), the Science and Technology Commission of Shanghai Municipality (22ZR1415700), the Shanghai Rising-star Program (20QA1402400), and the Fundamental Research Funds for the Central Universities. Additional support was provided by the Frontiers Science Center for Materiobiology and Dynamic Chemistry and the Feringa Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：confinement synthesis; FeO x cluster; pure siliceous zeolite; solvent-freesynthesis; direct oxidation of methane

摘要：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 FeOx clusters in zeolite is still challenging, which limits the application of zeolite-encapsulated FeOx clusters in catalysis. Herein, we design a modified solvent-free method to encapsulate FeOx clusters in pure siliceous MFI zeolites (Fe@MFI). It is revealed that the 0.3-0.4 nm subnanometric FeOx 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.