Color center-richγ-Al_(2)O_(3)promotes propane dehydrogenation

作     者：Yu Wang Xiang Wang Mengfei Qiao Qingyuan Wu Kunlong Liu Xiaodong Yi Ruixuan Qin Gang Fu Nanfeng Zheng 

作者机构：State Key Laboratory for Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy Materialsand Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM)Xiamen 361102China Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsCollege of Chemistry and Material SciencesZhejiang Normal UniversityJinhua 321004China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2024年第67卷第12期

页      面：4134-4141页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported from the National Key R&D Program of China(2022YFA1504500) the National Natural Science Foundation of China(92261207,21890752,and 22202164)for financial support support from the Natural Science Foundation of Fujian Province(2023J05006) the Fujian Provincial Chemistry Discipline Alliance the Fundamental Research Funds for the Central Universities(20720230002) 

主　　题：catalytic stability pentacoordinate Al^(3+) PtSn catalyst metal-support interaction mechanical strength 

摘      要：The Pt Sn/Al_(2)O_(3)catalyst is commonly used in commercial propane dehydrogenation(PDH)processes,but it faces challenges in the deactivation and periodic regeneration due to metal aggregation and coke deposition at high *** Al_(penta)^(3+)has been proven to be beneficial for enhancing catalytic stability,bottom-up synthesis protocols usually restrict their ***,a facile post-treatment approach using acetic acid was applied to create color centers(electrons trapped within oxygen vacancies)onγ-Al_(2)O_(3).Notably,the content of Al_(penta)^(3+)was enriched to 18.3%.Then,the pre-established Pt Sn clusters were *** electrons facilitated the formation of ultrafine Pt Sn nanoparticles(~2 nm),and the Al_(penta)^(3+)sites prevented the sintering of Pt Sn by constructing the strong Al_(penta)^(3+)–O–Sn ***,the catalytic durability of the catalyst prepared by conventional impregnation methods was remarkably extended from 186 h for the color center-free sample to 1,000 h using the HAc–Al_(2)O_(3)*** facile post-modification was further successfully extended to commercial Al_(2)O_(3)pellets without altering their mechanical properties,highlighting its potential in industrial applications.