Facile synthesis of spinel Cu1.5Mn1.5O4microspheres with high activity for the catalytic combustion of diesel soot

doi:10.1039/c7ra01971h

	Facile synthesis of spinel Cu1.5Mn1.5O4microspheres with high activity for the catalytic combustion of diesel soot
	Zhao, H.1,2; Zhou, X.X.1; Pan, L.Y.1,2; Wang, M.1,2; Chen, H.R.1,3; Shi, J.L.1,3
刊名	RSC Advances
	2017
卷号	7 期号:33 页码:20451-20459
DOI	10.1039/c7ra01971h
英文摘要	A series of Cu-Mn mixed oxides were prepared via a facile co-precipitation method and used as catalysts for diesel soot combustion in NOx/O2/N2. It is found that the chemical composition in the Cu-Mn mixed oxides has a significant influence on both morphology and catalytic activity. When the Cu/Mn atomic ratio was optimized to be 1, a distinctive pure spinel phase of Cu1.5Mn1.5O4was obtained (named Cu1Mn1), which exhibited superior catalytic activity (e.g., finishing combustion temperature (Tf) = 360 °C, in loose contact mode). The excellent catalytic activity of Cu1Mn1 was mainly attributed to the following aspects: (1) distinct morphological features: the well-dispersed Cu1Mn1 microspheres with a rough surface could contact soot particles sufficiently, and the stacked pores between the loosely packed nanoparticles within the microspheres could facilitate the diffusion of gaseous O2, NO and NO2; and (2) the high intrinsic activity of the Cu1.5Mn1.5O4phase: the abundant adsorbed oxygen species (Oads) is beneficial to the direct oxidation of soot into CO2, and the enormous Cu+-Mnλ+(λ = 3, 4, hereinafter inclusive) cation pairs could facilitate the production of the strong oxidant NO2, and the interaction between Cu2+and NO2would lead to high enhancement efficiency of NO2for soot combustion. This facile strategy for the high activity spinel phase towards catalytic soot combustion shows great promise for practical applications. © The Royal Society of Chemistry.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25643]
专题	中国科学院上海硅酸盐研究所
作者单位	1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-Xi Road, Shanghai; 200050, China; 2.University of Chinese Academy of Sciences, Beijing; 100049, China; 3.Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing, China
推荐引用方式 GB/T 7714	Zhao, H.,Zhou, X.X.,Pan, L.Y.,et al. Facile synthesis of spinel Cu1.5Mn1.5O4microspheres with high activity for the catalytic combustion of diesel soot[J]. RSC Advances,2017,7(33):20451-20459.
APA	Zhao, H.,Zhou, X.X.,Pan, L.Y.,Wang, M.,Chen, H.R.,&Shi, J.L..(2017).Facile synthesis of spinel Cu1.5Mn1.5O4microspheres with high activity for the catalytic combustion of diesel soot.RSC Advances,7(33),20451-20459.
MLA	Zhao, H.,et al."Facile synthesis of spinel Cu1.5Mn1.5O4microspheres with high activity for the catalytic combustion of diesel soot".RSC Advances 7.33(2017):20451-20459.