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

	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)1,2; Teng Zihao 3; Kang RN(康润宁)1,2 ; Bin F(宾峰)1,2,4 ; Wei XL(魏小林)1,2,4 ; Hao Qinglan 3; Hui Kwun Nam 5; Hui Kwan San 6; Dou Baojuan 3
通讯作者	Bin, Feng([email protected]) ; Dou, Baojuan([email protected])
发表期刊	FUEL
	2021-05-15
卷号	292 页码:10
ISSN	0016-2361
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.
关键词	Self-sustained combustion Perovskite Carbon monoxide Stability limit Sugar agent
DOI	10.1016/j.fuel.2021.120289
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000634751300002
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
资助项目	National Natural Science Foundation of China[51776216] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21040500]
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	一类
力学所作者排名	1
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://dspace.imech.ac.cn/handle/311007/86357
专题	高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Tianjin Univ Sci & Technol, Tianjin 300457, Peoples R China; 4.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China; 5.Univ Macau, Inst Appl Phys & Mat Engn, Ave Univ, Taipa, Macau, Peoples R China; 6.Univ East Anglia, Fac Sci, Sch Engn, Norwich Res Pk, Norwich NR4 7TJ, Norfolk, England
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.

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