Porous Cu-Mn-O catalysts fabricated by spray pyrolysis method for efficient CO oxidation

doi:10.1016/j.rinp.2019.01.049

IMR OpenIR

	Porous Cu-Mn-O catalysts fabricated by spray pyrolysis method for efficient CO oxidation
	Zhou, Yang 1,2; Liu, Xiaoyuan 1,2; Wang, Ke 1,2; Li, Jing 1; Zhang, Xinglai 1; Jin, Xin 1; Tang, Xinyue 1; Zhu, Xiuhui 3; Zhang, Ruishi 3; Jiang, Xin 1; Liu, Baodan 1
通讯作者	Liu, Baodan(baodanliu@imr.ac.cn)
	2019-03-01
发表期刊	RESULTS IN PHYSICS
ISSN	2211-3797
卷号	12 页码:1893-1900
摘要	Series of "Hopcalite" catalysts for low-temperature CO oxidation are prepared through a facile ultra-sonic spray pyrolysis approach. It has been found that the spray pyrolysis temperature and Cu/Mn atomic ratio in initial precursors show significant impacts on the catalytic activity of Cu-Mn-O catalysts. The catalyst synthesized at 550 degrees C with Cu/Mn = 1/2 in precursor (Cul Mn2-550) shows the highest catalytic activity towards CO oxidation (T-100 = 63 degrees C; E-a = 17.04 KJ mol(-1)), owing to the formation of CuMn2O4 phase with poor crystallinity. The synergistic effect of Cu and Mn species in spinel Cu-Mn-O phases attributes to the evaluated catalytic activity compared with those of pure oxides of copper or manganese towards CO oxidation. The results reveal that Cul Mn2-550 not only provides more defects and vacancies to create more active sites, but also generates more highly active Cu (II) to promote CO oxidation. On the contrary, the decreasing amount of Cu (II) and the higher degree of crystallinity resulting from higher synthesis temperature lead to the deterioration of catalytic activity. Moreover, the phase transformation among the Cu(x)Mn(3-x)O(4 )spinels also shows significant effect on CO conversion rate. Finally, the formation mechanism of Cu-Mn-O catalysts and related CO oxidation process are discussed based on series of characterizations.
关键词	Spray pyrolysis Cu-Mn-O catalysts CO oxidation Porous nanostructures Synergistic effect
资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science
DOI	10.1016/j.rinp.2019.01.049
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51702326] ; National Natural Science Foundation of China[51872296] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[Y4NC711171] ; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science[2017RP25]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Multidisciplinary
WOS记录号	WOS:000460704700275
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/132087
专题	中国科学院金属研究所
通讯作者	Liu, Baodan
作者单位	1.Chinese Acad Sci, IMR, Shenyang Natl Lab Mat Sci SYNL, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Yingkou Univ Technol, Dept Chem & Environm Engn, Yingkou 115014, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yang,Liu, Xiaoyuan,Wang, Ke,et al. Porous Cu-Mn-O catalysts fabricated by spray pyrolysis method for efficient CO oxidation[J]. RESULTS IN PHYSICS,2019,12:1893-1900.
APA	Zhou, Yang.,Liu, Xiaoyuan.,Wang, Ke.,Li, Jing.,Zhang, Xinglai.,...&Liu, Baodan.(2019).Porous Cu-Mn-O catalysts fabricated by spray pyrolysis method for efficient CO oxidation.RESULTS IN PHYSICS,12,1893-1900.
MLA	Zhou, Yang,et al."Porous Cu-Mn-O catalysts fabricated by spray pyrolysis method for efficient CO oxidation".RESULTS IN PHYSICS 12(2019):1893-1900.