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Effects of precursor concentration on morphologies of Cu2O micro/nanocrystals and properties of CO self-sustained catalytic combustion

文献类型：期刊论文

作者Ma PD(马盼东)2,3; Teng, Zihao3; Hao, Qinglan3; Kang RN(康润宁)1,2; Li, Bei3; Bin F(宾峰)1,2; Dou, Baojuan3
刊名FUEL
出版日期2021-04-01
卷号289页码:8
关键词Cu2O micro/nanocrystals Precursor concentration Morphology CO oxidation Self-sustained catalytic combustion
ISSN号0016-2361
DOI10.1016/j.fuel.2020.119776
通讯作者Bin, Feng(binfeng@imech.ac.cn) ; Dou, Baojuan(bjdou@tust.edu.cn)
英文摘要The self-sustained catalytic combustion is one of the most effective ways to remove high concentration CO at low temperature. In this paper, Cu2O micro/nanocrystals with different morphologies were successfully synthesized by changing the precursor concentration using liquid phase reduction method. The obtained Cu2O were characterized using SEM, XRD, XPS, H-2-TPR and O-2-TPD, and the relationship between the catalytic performance and morphology was analyzed based on CO-TPD-MS and activity evaluation results. It was found that high precursor concentration leads to more exposure of active crystal planes of Cu2O. Compared with Cu2O-1 exposing only (100) crystal planes, Cu2O-5, the precursor concentration of which is 5 times of Cu2O-1, exposes (100) and (110) crystal planes. Cu2O-9, with 9 times of precursor concentration of Cu2O-1, exposes (100), (110) and (1 1 1) crystal planes simultaneously. All the obtained Cu2O with different precursor concentrations can achieve self-sustained CO catalytic combustion, and the catalytic activity increases with increasing precursor concentration (Cu2O-1 < Cu2O-5 < Cu2O-9). The results prove that unsaturated coordination of Cu and O on the (1 1 1) and (1 1 0) planes can enhance the corresponding reducibility, adsorption and activation of gaseous oxygen, consequently promoting the CO oxidation to CO2 over Cu2O-9.
分类号一类
WOS关键词CARBON-MONOXIDE ; SCALE SYNTHESIS ; PERFORMANCE ; OXIDATION ; NANOCUBES ; ANODE
资助项目National Natural Science Foundation of China[51776216] ; Postdoctoral Science Foundation of China[2017M623284]
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000612056500008
资助机构National Natural Science Foundation of China ; Postdoctoral Science Foundation of China
其他责任者Bin, Feng ; Dou, Baojuan
源URL[http://dspace.imech.ac.cn/handle/311007/86103]  
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.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China;
3.Tianjin Univ Sci & Technol, Coll Marine & Environm Sci, Tianjin 300457, Peoples R China;
推荐引用方式
GB/T 7714		 Ma PD,Teng, Zihao,Hao, Qinglan,et al. Effects of precursor concentration on morphologies of Cu2O micro/nanocrystals and properties of CO self-sustained catalytic combustion[J]. FUEL,2021,289:8.
APA 马盼东.,Teng, Zihao.,Hao, Qinglan.,康润宁.,Li, Bei.,...&Dou, Baojuan.(2021).Effects of precursor concentration on morphologies of Cu2O micro/nanocrystals and properties of CO self-sustained catalytic combustion.FUEL,289,8.
MLA 马盼东,et al."Effects of precursor concentration on morphologies of Cu2O micro/nanocrystals and properties of CO self-sustained catalytic combustion".FUEL 289(2021):8.

入库方式： OAI收割

来源：力学研究所

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