Hollow MnOx-CeO2 mixed oxides as highly efficient catalysts in NO oxidation

doi:10.1016/j.cej.2017.02.148

	Hollow MnOx-CeO2 mixed oxides as highly efficient catalysts in NO oxidation
	Shen, Qun 1; Zhang, Lingyun 1; Sun, Nannan 1; Wang, Hui 1; Zhong, Liangshu 1; He, Chi 2; Wei, Wei1,3 ; Sun, Yuhan1,3
	2017-08-15
发表期刊	CHEMICAL ENGINEERING JOURNAL (IF:13.3[JCR-2023],13.2[5-Year])
ISSN	1385-8947
卷号	322 页码:46-55
发表状态	已发表
DOI	10.1016/j.cej.2017.02.148
摘要	A series of hollow MnOx-CeO2 mixed oxide catalysts were prepared by employing carbon as hard templates. The activity tests reveal that the catalytic performance of MnOx-CeO2(CS) samples are more active than that of MnOx-CeO2(AC) sample, indicating carbon sphere (CS) as a more effective carbon template. Among these samples, MnOx-CeO2(CS1) sample exhibits the best activity, for which a maximal NO conversion (similar to 82%) could be attained at 220 degrees C when GHSV = 120,000 h(-1). In addition, the NO conversion could be further improved with lower NO initial concentration or higher O-2 content. Under the simulated flue gas condition, the activity of MnOx-CeO2(CS1) sample is barely affected by the presence of CO2, but the influence of H2O and SO2 couldn't be neglected. The characterization result proves that the core-shell hollow structure has been successfully synthesized over MnOx-CeO2 binary oxides. For the hollow MnOx-CeO2 sample, the mesopore structures are formed and the MnOx oxides are highly dispersed on CeO2 support. Among these samples, MnOx-CeO2(CS1) sample possesses the largest S-BET and V-total values. The result of H-2-TPR and oxygen pulse measurement indicates that MnOx-CeO2(CS) samples, especially MnOx-CeO2(CS1) exhibits the best redox property. Moreover, more amount of high valence Mn as redox active sites and more oxygen vacancies exist in MnOx-CeO2(CS1) proved by XPS technique. Overall, these properties may contribute to the excellent activity. (C) 2017 Elsevier B.V. All rights reserved.
关键词	Hollow mixed oxides NO oxidation MnOx-CeO2 Carbon sphere template Oxygen storage capacity (OSC)
收录类别	SCI ; EI
语种	英语
资助项目	National Key Research and Development Program[2016YFA0202800] ; National Key Research and Development Program[2016YFC0204201]
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000401594200005
出版者	ELSEVIER SCIENCE SA
EI入藏号	20171503556913
EI主题词	Carbon dioxide ; Catalysts ; Manganese ; Oxygen ; Redox reactions ; Sulfur dioxide
EI分类号	Manganese and Alloys:543.2 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Crystalline Solids:933.1
WOS关键词	DIESEL SOOT OXIDATION ; LOW-TEMPERATURE ; SHELL MICROSPHERES ; PORE STRUCTURE ; CO OXIDATION ; FAST NH3-SCR ; REDUCTION ; PERFORMANCE ; COMBUSTION ; REMOVAL
原始文献类型	Article
通讯作者	Sun, Nannan ; Wei, Wei
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1316
专题	物质科学与技术学院_特聘教授组_魏伟组物质科学与技术学院_特聘教授组_孙予罕组
通讯作者	Sun, Nannan; Wei, Wei
作者单位	1.Chinese Acad Sci, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai 201210, Peoples R China 2.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Sch Energy & Power Engn, Xian 710049, Peoples R China 3.ShanghaiTech Univ, 100 Haike Rd, Shanghai 201210, Peoples R China
通讯作者单位	上海科技大学
推荐引用方式 GB/T 7714	Shen, Qun,Zhang, Lingyun,Sun, Nannan,et al. Hollow MnOx-CeO2 mixed oxides as highly efficient catalysts in NO oxidation[J]. CHEMICAL ENGINEERING JOURNAL,2017,322:46-55.
APA	Shen, Qun.,Zhang, Lingyun.,Sun, Nannan.,Wang, Hui.,Zhong, Liangshu.,...&Sun, Yuhan.(2017).Hollow MnOx-CeO2 mixed oxides as highly efficient catalysts in NO oxidation.CHEMICAL ENGINEERING JOURNAL,322,46-55.
MLA	Shen, Qun,et al."Hollow MnOx-CeO2 mixed oxides as highly efficient catalysts in NO oxidation".CHEMICAL ENGINEERING JOURNAL 322(2017):46-55.