A new popular transition metal-based catalyst:SmMn_(2)O_(5) mullite-type oxide  

作　　者：Yatian Deng Dao Wang Jinglan Cheng Yunkun Zhao Zongbao Li Chunyan Zang Jian Li Lichao Jia 

机构地区：[1]School of Materials Science and Engineering,State Key Lab of Material Processing and Die&Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,China [2]College of Science,Qiongtai Normal University,Haikou 571127,China [3]Kunming Sino-Platinum Metals Catalyst Co.,Ltd.,Kunming 650106,China [4]State Key Laboratory of Advanced Electromagnetic Technology,Huazhong University of Science and Technology,Wuhan 430074,China

出　　处：《Chinese Chemical Letters》2024年第8期25-35,共11页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52072134,U1910209,51972128,52272205);Hubei Province(Nos.2021BCA149,2021CFA072,2022BAA087).

摘　　要：Catalyst with high performance has drawn increasing attention recently due to its significant advantages in chemical reactions such as speeding up the reaction,lowering the reaction temperature or pressure,and proceeding without itself being consumed.Despite the superior catalytic performance of precious metal catalysts,transition metal oxides offer a promising route for substitution of precious metals in catalysis arising from their low cost,intrinsic activity and sufficient stability.Mullite-type oxide SmMn_(2)O_(5) exhibits a unique crystal structure containing double crystalline fields,and nowadays is used widely as the catalyst in different chemical reactions,including the reactions of vehicle emissions reduction and oxygen evolution reaction,gas sensors,and metal-air batteries,promoting attention in catalytic perfor-mance enhancement.To our knowledge,there is no review article covering the comprehensive informa-tion of SmMn2 O 5 and its applications.Here we review the recent progress in understanding of the crys-tal structure of SmMn_(2)O_(5) and its basic physical properties.We then summarize the catalytic sources of SmMn_(2)O_(5) and reaction mechanisms,while the strategies to improve catalytic performance of SmMn_(2)O_(5) are further presented.Finally,we provide a perspective on how to make further progress in catalytic applications.

关 键 词：CATALYST SmMn_(2)O_(5) Mullite-type oxide Catalytic oxidation Oxygen reduction reaction Oxygen evolution reaction Reaction mechanisms 

分 类 号：O643.36[理学—物理化学]