Catalytic behavior of hydrothermally synthesized La0.5Sr0.5MnO3 single-crystal cubes in the oxidation of CO and CH4 | |
Teng, Fei ; Han, Wei ; Liang, Shuhui ; Gaugeu, Buergen ; Zong, Ruilong ; Zhu, Yongfa | |
2010-05-06 ; 2010-05-06 | |
关键词 | La0.5Sr0.5MnO3 single crystals cubes hydrothermal catalytic oxidation CO CH4 thermal stability CARBON-MONOXIDE OXIDATION PEROVSKITE-TYPE OXIDES RAMAN-SCATTERING LANTHANUM MANGANITE MAGNETIC-PROPERTIES LOW-TEMPERATURE COMBUSTION TRANSITION NANOWIRES STRONTIUM Chemistry, Physical Engineering, Chemical |
中文摘要 | 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. |
语种 | 英语 ; 英语 |
出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE ; SAN DIEGO ; 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/13634] |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | 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],2010, 2010. |
APA | Teng, Fei,Han, Wei,Liang, Shuhui,Gaugeu, Buergen,Zong, Ruilong,&Zhu, Yongfa.(2010).Catalytic behavior of hydrothermally synthesized La0.5Sr0.5MnO3 single-crystal cubes in the oxidation of CO and CH4.. |
MLA | Teng, Fei,et al."Catalytic behavior of hydrothermally synthesized La0.5Sr0.5MnO3 single-crystal cubes in the oxidation of CO and CH4".(2010). |
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