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	The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode
	Cao, Chunmei1; Xing, Lingli1; Yang, Yuexi1; Tian, Ye1; Ding, Tong1; Zhang, Jing2; Hu, Tiandou2; Zheng, Lirong2; Li, Xingang1
刊名	Applied surface science
	2017-06-01
卷号	406页码:245-253
关键词	Transition metal oxides Nanosheets Three-dimensionally macroporous ni foam Soot combustion Crossed macropores
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2017.02.117
通讯作者	Li, xingang(xingang_li@tju.edu.cn)
英文摘要	Crossed nanosheets of transition metal oxide (tmo-ns: co-ns, mn-ns and fe-ns) were synthesized by a facile hydrothermal method and employed for soot combustion in the no/o-2/n-2 and o-2/n-2 atmosphere under gravitational contact mode (gcm). they show high catalytic activities for soot combustion due to the macroporous structure of the as-prepare catalysts increasing the soot-catalyst contact efficiency. the xrd and xps results reveal that the active phases in the corresponding catalysts exist as co3o4, mn2o3 and fe2o3, respectively. among these catalysts, the co-ns shows the best activity for soot combustion, especially in the presence of no, whose catalytic activity of t-50 (391 degrees c) and s-co2 (100%) is as good as that of the pt/al2o3 catalyst. the excellent performance of the co-ns catalyst results from several factors: the highest intrinsic activity (tof = 1.77 x 10(-5) s(-1)); the highest redox property as revealed by h-2-tpr and soot-tpr; the largest amount of active oxygen species as clarified by xps; the highest ability of no oxidation to no2 supported by no-tpo. in addition, the multiporous structure of co3o4 nanosheets is facilitated for the mass transfer. in the o-2 atmosphere, soot particulates are directly oxidized by the surface adsorbed oxygen. after introducing of no, the soot particulates are readily oxidized by no2 at the low temperature (< 330 degrees c); with the increase of the reaction temperature (330-450 degrees c), both the active oxygen species and no2 involve in soot combustion. (c) 2017 elsevier b.v. all rights reserved.
WOS关键词	CARBON-MONOXIDE OXIDATION ; CATALYTIC PERFORMANCE ; ARRAY CATALYST ; NOX STORAGE ; GOLD NANOPARTICLES ; NANOPOROUS WALLS ; CEO2 NANOCUBES ; ORGANIC-DYES ; REMOVAL ; PEROVSKITE
WOS研究方向	Chemistry ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000398011600031
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176666
专题	高能物理研究所
通讯作者	Li, Xingang
作者单位	1.Tianjin Univ, Tianjin Key Lab Appl Catalysis Sci & Engn, Sch Chem Engn & Technol, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cao, Chunmei,Xing, Lingli,Yang, Yuexi,et al. The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode[J]. Applied surface science,2017,406:245-253.
APA	Cao, Chunmei.,Xing, Lingli.,Yang, Yuexi.,Tian, Ye.,Ding, Tong.,...&Li, Xingang.(2017).The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode.Applied surface science,406,245-253.
MLA	Cao, Chunmei,et al."The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode".Applied surface science 406(2017):245-253.

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