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题名: Catalytic behavior of hydrothermally synthesized La0.5Sr0.5MnO3 single-crystal cubes in the oxidation of CO and CH4
作者: Teng, Fei;  Han, Wei;  Liang, Shuhui;  Gaugeu, Buergen;  Zong, Ruilong;  Zhu, Yongfa
关键词: La0.5Sr0.5MnO3 ;  single crystals ;  cubes ;  hydrothermal ;  catalytic oxidation ;  CO ;  CH4 ;  thermal stability
刊名: JOURNAL OF CATALYSIS
发表日期: 2007-08-15
DOI: 10.1016/j.jcat.2007.05.007
卷: 250, 期:1, 页:1-11
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: La0.5Sr0.5MnO3 single-crystal cubes and nanoparticles were synthesized by hydrothermal and citrate routes, respectively. Their catalytic properties for low-temperature CO oxidation and high-temperature CH4 combustion were evaluated, and the effects of crystal structure and morphology on the catalytic properties of the catalysts were investigated. The activity (220 degrees C of the complete oxidation of CO over the single cubes was lower than that (190 degrees C over the nanoparticles. After running at 600 degrees C for 48 h under the reaction conditions, the surface area of the nanoparticles decreased significantly, but the cubes nearly maintained their surface area. For CH4 combustion, the La0.5Sr0.5MnO3 cubes showed a higher activity (T-10 = 360 degrees C, T-10: the temperature at 10% conversion of CH4) than the nanoparticles (T-10 = 440 degrees C. The different activities were attributed to their different crystal structures and morphologies. (c) 2007 Elsevier Inc. All rights reserved.
关键词[WOS]: CARBON-MONOXIDE OXIDATION ;  PEROVSKITE-TYPE OXIDES ;  RAMAN-SCATTERING ;  LANTHANUM MANGANITE ;  MAGNETIC-PROPERTIES ;  LOW-TEMPERATURE ;  COMBUSTION ;  TRANSITION ;  NANOWIRES ;  STRONTIUM
语种: 英语
WOS记录号: WOS:000249104000001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140563
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Tsing Hua Univ, Dept Chem, Beijing 100084, Peoples R China
2.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Teng, Fei,Han, Wei,Liang, Shuhui,et al. Catalytic behavior of hydrothermally synthesized La0.5Sr0.5MnO3 single-crystal cubes in the oxidation of CO and CH4[J]. JOURNAL OF CATALYSIS,2007,250(1):1-11.
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