Study on activity, stability limit and reaction mechanism of CO self-sustained combustion over the LaMnO3, La0.9Ce0.1MnO3 and La0.9Sr0.1MnO3 perovskite catalysts using sugar agent

doi:10.1016/j.fuel.2021.120289

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Study on activity, stability limit and reaction mechanism of CO self-sustained combustion over the LaMnO3, La0.9Ce0.1MnO3 and La0.9Sr0.1MnO3 perovskite catalysts using sugar agent
	Huang JQ(黄俊钦)4,5; Teng Zihao 6; Kang RN(康润宁)4,5; Bin F(宾峰)1,4,5; Wei XL(魏小林)1,4,5; Hao Qinglan 6; Hui Kwun Nam 2; Hui Kwan San 3; Dou Baojuan 6
刊名	FUEL
	2021-05-15
卷号	292 页码:10
关键词	Self-sustained combustion Perovskite Carbon monoxide Stability limit Sugar agent
ISSN号	0016-2361
DOI	10.1016/j.fuel.2021.120289
通讯作者	Bin, Feng(binfeng@imech.ac.cn) ; Dou, Baojuan(bjdou@tust.edu.cn)
英文摘要	The LaMnO3, La0.9Ce0.1MnO3 and La0.9Sr0.1MnO3 catalysts are synthesized using sugar agent, and the CO selfsustained combustion is investigated, where the catalytic performance is decided by temperature with CO conversions of 10% (T10), 50% (T50), and 90% (T90). The results show that self-sustaining combustion is successfully realized on the catalyst, and the order of activity decrease is as follows: La0.9Ce0.1MnO3 (with sugar) > La0.9Sr0.1MnO3 (with sugar) > LaMnO3 (with sugar) > LaMnO3 (without sugar) > La0.9Sr0.1MnO3 (without sugar) > La0.9Ce0.1MnO3 (without sugar). Combined with the results of XPS, H2-TPR, O2-TPD and CO-TPD techniques, the excellent activity of La0.9Ce0.1MnO3 (with sugar) can be attributed to the high content of Mn4+ ions and reactive oxygen vacancies enriched on the catalyst surface, sound low-temperature reduction, and uniform dispersion. Besides, in situ IR spectroscopy results indicate that the catalytic combustion of CO over manganese-based perovskite catalysts follows the L-H mechanism: the chemisorption of CO and O2 takes place to produce monodentate carbonates and bicarbonate species, which then decompose to yield CO2 release. The hightemperature stability test provides evidence that the La0.9Ce0.1MnO3 (with sugar) gives 100% CO conversion and that the activities remain almost unchanged after reaction for 12 h, where the temperature of catalyst bed reaches about 717 ?C. The results obtained are helpful to accept this technology on efficient and clean energy utilization in iron and steel industry.
分类号	一类
资助项目	National Natural Science Foundation of China[51776216] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21040500]
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
WOS记录号	WOS:000634751300002
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86356]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China; 2.Univ Macau, Inst Appl Phys & Mat Engn, Ave Univ, Taipa, Macau, Peoples R China; 3.Univ East Anglia, Fac Sci, Sch Engn, Norwich Res Pk, Norwich NR4 7TJ, Norfolk, England 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 5.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 6.Tianjin Univ Sci & Technol, Tianjin 300457, Peoples R China;
推荐引用方式 GB/T 7714	Huang JQ,Teng Zihao,Kang RN,et al. Study on activity, stability limit and reaction mechanism of CO self-sustained combustion over the LaMnO3, La0.9Ce0.1MnO3 and La0.9Sr0.1MnO3 perovskite catalysts using sugar agent[J]. FUEL,2021,292:10.
APA	黄俊钦.,Teng Zihao.,康润宁.,宾峰.,魏小林.,...&Dou Baojuan.(2021).Study on activity, stability limit and reaction mechanism of CO self-sustained combustion over the LaMnO3, La0.9Ce0.1MnO3 and La0.9Sr0.1MnO3 perovskite catalysts using sugar agent.FUEL,292,10.
MLA	黄俊钦,et al."Study on activity, stability limit and reaction mechanism of CO self-sustained combustion over the LaMnO3, La0.9Ce0.1MnO3 and La0.9Sr0.1MnO3 perovskite catalysts using sugar agent".FUEL 292(2021):10.