Optimized Pt-MnO_(x) interface in Pt-MnO_(x)/3DOM-Al_(2)O_(3)catalysts for enhancing catalytic soot combustion

作     者：Jing Xiong Zhenguo Li Peng Zhang Qi Yu Kaixiang Li Yilin Zhang Zhen Zhao Jian Liu Jianmei Li Yuechang Wei Jing Xiong;Zhenguo Li;Peng Zhang;Qi Yu;Kaixiang Li;Yilin Zhang;Zhen Zhao;Jian Liu;Jianmei Li;Yuechang Wei

作者机构：National Engineering Laboratory for Mobile Source Emission Control TechnologyChina Automotive Technology&Research Center Co.Ltd.Tianjin 300300China State Key Laboratory of Heavy Oil ProcessingCollege of ScienceChina University of PetroleumBeijing 102249China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2021年第32卷第4期

页      面：1447-1450页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.21673142,21972166) Beijing Natural Science Foundation(No.2202045) National Engineering Laboratory for Mobile Source Emission Control Technology(No.NELMS2017A05) PetroChina Innovation Foundation(No.2018D-5007-0505) Science Foundation of China University of Petroleum,Beijing(No.242017QNXZ02) 

主　　题：3DOM material Platinum Manganese oxide Strong metal-oxide interaction Soot combustion 

摘      要：The catalysts of three-dimensionally ordered macroporous(3 DOM)Al_(2)O_(3)-supported core-shell structured Pt@MnOx nanoparticles(3 DOM-Pt@MnO_(x)/Al_(2)O_(3))were successfully prepared by the gas bubbling-assisted membrane reduction-precipitation(GBMR/P)***@MnO_(x)core-shell nanoparticles(NPs)are highly dispersed on the inner surface of 3 DOM-Al_(2)O_(3)***@MnOx/3 DOM-Al_(2)O_(3)catalysts,which combine both advantages of high-efficiency soot-catalyst contact by 3 DOM-Al_(2)O_(3)structure and the abundant active sites by the optimized Pt-MnO_(x)interface,exhibit high catalytic activities for soot combustion,and the catalytic activities are strongly dependent on the thickness of MnO_(x)*** the catalysts,3 DOM-Pt@MnO_(x)/Al_(2)O_(3)-1 catalyst with optimized Pt-MnO_(x)interface shows the highest catalytic activity for soot combustion,i.e.,its values of T_(50)and S_(CO_(2))^(m) are 351℃and98.6%,*** highest density of Pt-MnO_(x)active sites for adsorptio n-activation of gaseous O_(2)is responsible for enhancing catalytic activity for soot ***@MnOx/3 DOM-Al_(2)O_(3)catalysts are promising to practical applications for the emission reduction of soot particles.