文献类型：期刊文献

英文题名：Confinement of subnanometric PdCo bimetallic oxide clusters in zeolites for methane complete oxidation

作者：Tang, Xuan[1];Lou, Yang[2];Zhao, Ruiling[1];Tang, Bingjing[1];Guo, Wenyi[2];Guo, Yanglong[1];Zhan, Wangcheng[1];Jia, Yanyan[1];Wang, Li[1];Dai, Sheng[1];Guo, Yun[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat & Feringa Nobel Prize Scientist J, Sch Chem & Mol Engn, Res Inst Ind Catalysis, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Jiangnan Univ, Sch Chem & Mat Engn, Key Lab Synthet & Biol Colloids, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China

年份：2021

卷号：418

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20211810295531);WOS:【SCI-EXPANDED(收录号:WOS:000691507900002)】；

基金：This project was financially supported by the National Key Research and Development Program of China (2016YFC0204300), the National Natural Science Foundation of China (21908079, 21571061 and 21976057), the Startup Funding of Jiangnan University (1045210322190170, 1045219039200010), the State Key Laboratory of Fine Chemicals, Dalian University of Technology (KF2005), the "Shanghai Science and Technology Innovation Plan" Program (19DZ1208000), the fund of the State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals (SKL-SPM-202018), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, and Shanghai Rising-star Program (20QA1402400). Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center. The authors also thank the Research Center of Analysis and Test (ECUST) for help on data and characterization.

语种：英文

外文关键词：Methane complete oxidation; Bimetallic oxide clusters; Zeolites; Confinement synthesis

摘要：Supported Pd-based catalysts are widely used for various catalytic transformations, but steam-induced sintering remains a critical issue for industrial application. Here, we report a strategy of encapsulating PdCo bimetallic oxide clusters (0.4-0.6 nm) into sinusoidal channels of MFI zeolite used for methane complete oxidation. The introduction of Co species promotes the activation of surface oxygen species and modulates electronic state of Pd species, effectively enhancing the catalytic performance with the lowest temperature of CH4 complete conversion obtained at 435 degrees C in the presence of steam. Meanwhile, the PdCo particle size and catalytic activity are remained on PdCo@MFI after 20 h at 420 degrees C in the presence of steam, much more stable than that of reference catalysts (PdCo/ZSM-5, drop 19% and PdCo/Al2O3, drop 22%). The strategy of confining bimetallic clusters into zeolites to enhance the activity and stability broadens the avenue to designing better catalysts for methane complete oxidation.