Mesoporous MnOx-CeO2 composites for NH3-SCR: the effect of preparation methods and a third dopant

doi:10.1039/c9ra00731h

	Mesoporous MnOx-CeO2 composites for NH3-SCR: the effect of preparation methods and a third dopant
	Li Weiman 1,2,3,4; Liu Haidi 1; Chen Yunfa 1,4
刊名	RSC ADVANCES
	2019
卷号	9 期号:21 页码:11912-11921
ISSN号	2046-2069
DOI	10.1039/c9ra00731h
英文摘要	In this study, different preparation methods including an oxalate route, a nano-casting strategy and a traditional co-precipitation route were applied to obtain MnOx-CeO2 mixed oxides for selective catalytic reduction (SCR) of NO with NH3. The catalyst prepared from the oxalate route showed improved performance for NOx conversion and SO2 + H2O durability. To further improve the SO2 and H2O resistance of catalysts, ternary oxides were prepared from the oxalate route. The catalysts were studied by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, X-ray photoelectron spectroscopy (XPS), H-2 temperature-programmed reduction (H-2-TPR), NH3 temperature-programmed desorption (NH3-TPD), SO2 temperature-programmed desorption (SO2-TPD), and in situ diffuse reflectance infrared fourier transform spectroscopy (in situ DRIFTS). The nickel-manganese-cerium ternary oxide showed the best SO2 and H2O durability. The reason can be ascribed to its smaller pores, amorphous structure, and moderate amount of surface Mn3+/oxygen species, which could decrease chemical adsorption of SO2.
资助项目	National Key Research and Development Plan[2016YFC0204100] ; National Key Research and Development Plan[2016YFC0204103] ; Control Strategy and Technology Integrated Demonstration of Industrial Source Pollution in Guanzhong area of China[ZDRW-ZS-2017-6-2]
WOS关键词	SELECTIVE CATALYTIC-REDUCTION ; LOW-TEMPERATURE SCR ; SO2 TOLERANCE ; REACTION-MECHANISM ; OXIDE CATALYSTS ; NO REMOVAL ; NI ; RESISTANCE ; NH3 ; CE
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000466757100038
资助机构	National Key Research and Development Plan ; Control Strategy and Technology Integrated Demonstration of Industrial Source Pollution in Guanzhong area of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/28360]
专题	中国科学院过程工程研究所
通讯作者	Chen Yunfa
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Zhongke Langfang Inst Proc Engn, Langfang Econ & Tech Dev Zone,Fenghua Rd 1, Langfang, Hebei, Peoples R China 4.CAS Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Li Weiman,Liu Haidi,Chen Yunfa. Mesoporous MnOx-CeO2 composites for NH3-SCR: the effect of preparation methods and a third dopant[J]. RSC ADVANCES,2019,9(21):11912-11921.
APA	Li Weiman,Liu Haidi,&Chen Yunfa.(2019).Mesoporous MnOx-CeO2 composites for NH3-SCR: the effect of preparation methods and a third dopant.RSC ADVANCES,9(21),11912-11921.
MLA	Li Weiman,et al."Mesoporous MnOx-CeO2 composites for NH3-SCR: the effect of preparation methods and a third dopant".RSC ADVANCES 9.21(2019):11912-11921.