Comparative study of mesoporous NixMn6-xCe4 composite oxides for NO catalytic oxidation

doi:10.1039/c9ra05098a

	Comparative study of mesoporous NixMn6-xCe4 composite oxides for NO catalytic oxidation
	Li Weiman 1,2,3,4; Liu Haidi 1; Zhang Min 1,4; Chen Yunfa 1,2
刊名	RSC ADVANCES
	2019-09-30
卷号	9 期号:53 页码:31035-31042
DOI	10.1039/c9ra05098a
英文摘要	In this work, a series of mesoporous NixMn6-xCe ternary oxides were prepared to investigate their NO catalytic oxidation ability. The sample Ni2Mn4Ce4 showed a 95% NO conversion at 210 degrees C (GHSV, similar to 80 000 h(-1)). Characterization results showed the good catalytic performance of Ni2Mn4Ce4 was due to its high specific surface area, more surface oxygen and high valance manganese species, which can be ascribed to the incorporation of three elements. Based on the results of XRD, H-2-TPR, O-2-TPD and XPS, we confirmed the existence of Ni3+ + Mn3+ -> Ni2+ + Mn4+, Ce4+ + Ni2+ -> Ce3+ + Ni3+ in Ni2Mn4Ce4, and the oxidation-reduction cycles were proved to be helpful for NO oxidation. The results from an in situ DRIFTS study indicated the presence of bidentate nitrate and monodentate nitrate species on the catalyst's surface. The nitrate species were proved to be intermediates for NO oxidation to NO2. A nitrogen circle mechanism was proposed to explain the possible route for NO oxidation. Nickel introduction was also helpful to improve the SO2 resistance of the NO oxidation reaction. The activity drop of Ni2Mn4Ce4 was 13.15% in the presence of SO2, better than Mn6Ce4 (25.29%).
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	LOW-TEMPERATURE SCR ; IN-SITU DRIFTS ; HIGHLY EFFICIENT ; CO OXIDATION ; REDUCTION ; MECHANISM ; PERFORMANCE ; MNOX-CEO2 ; AMMONIA ; FACILE
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000489652900050
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/122111/31087]
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, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.CAS Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Fujian, Peoples R China 3.Zhongke Langfang Inst Proc Engn, Langfang Econ Tech Dev Zone, Fenghua Rd 1, Zhongke, Hebei, Peoples R China 4.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li Weiman,Liu Haidi,Zhang Min,et al. Comparative study of mesoporous NixMn6-xCe4 composite oxides for NO catalytic oxidation[J]. RSC ADVANCES,2019,9(53):31035-31042.
APA	Li Weiman,Liu Haidi,Zhang Min,&Chen Yunfa.(2019).Comparative study of mesoporous NixMn6-xCe4 composite oxides for NO catalytic oxidation.RSC ADVANCES,9(53),31035-31042.
MLA	Li Weiman,et al."Comparative study of mesoporous NixMn6-xCe4 composite oxides for NO catalytic oxidation".RSC ADVANCES 9.53(2019):31035-31042.