文献类型：期刊文献

英文题名：Refining Metal-Support Interactions via Surface Modification of Irreducible Oxide Support for Enhanced Complete Propane Oxidation

作者：You, Yang[1];Xu, Aijie[1];Tang, Xuan[1,2];Guo, Yanglong[1];Zhan, Wangcheng[1];Wang, Li[1];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, Shanghai 200237, Peoples R China

年份：2024

卷号：14

期号：15

起止页码：11457

外文期刊名：ACS CATALYSIS

收录：;EI(收录号：20243016732934);WOS:【SCI-EXPANDED(收录号:WOS:001272003700001)】；

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, 22306063, and 22376063), the Young Elite Scientists Sponsorship Program by CAST (YESS20230258), 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. The authors also thank the Research Center of Analysis and Test at ECUST for technique support.

语种：英文

外文关键词：propane oxidation; metal-support interaction; irreducible oxide support; H2O2 treatment; chemical state of Pt

摘要：Regulating the metal-support interaction (MSI) of supported metal catalysts is critical to enhancing their catalytic performance. However, achieving direct control over the MSI by tuning the properties of irreducible oxide-supported supports remains a challenging task. In this study, we propose a surface modification strategy to refine the MSI on an irreducible MgAl2O4-supported Pt catalyst. By employing a facile H2O2 treatment to modify the support surface, the number of Bronsted acid sites on MgAl2O4 was successfully reduced. The MSI between Pt and MgAl2O4 is appropriately weakened, resulting in a higher proportion of metallic Pt species, while maintaining a high level of dispersion during the reaction. These metallic Pt species enhance the activation ability of C-H bonds in propane and facilitate the rapid consumption of intermediate species. Consequently, the complete propane oxidation reaction performance of H2O2-treated Pt/MgAl2O4 is significantly promoted, exhibiting an impressive increase in intrinsic activity of over 32-fold compared to traditional Pt/MgAl2O4.