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New methods to prepare perovskite-type La0.8Sr0.2CoO3 catalyst at low temperature
Shao, ZP; Xiong, GX; Sheng, SS; Chen, HR; Li, L; Delmon, B; Jacobs, PA; Maggi, R; Martens, JA; Grange, P; Poncelet, G
刊名PREPARATION OF CATALYSTS VII
1998
118页:431-439
收录类别ISTP ; SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]OXYGEN PERMEATION ; OXIDES ; DECOMPOSITION
英文摘要A pure phase perovskite-type composite oxide La0.8Sr0.2CoO3 (LSCO) was prepared by three methods: sol-gel method using EDTA as ligand, environmentaly safe metal-EDTA-cellulose complexing method and metal-citric-cellulose complexing method. The formation processes of LSCO by those methods were investigated by TG-DTA, XRD and IR spectroscopy. The results indicated that when EDTA complexing method was used, at optimized condition, pure phase perovskite-type LSCO was acquired after the precursor was fired at 800 degrees C for 2hr. In the process of forming perovskite LSCO, SrCO3 was formed and calcination temperatures higher than 800 degrees C was needed to get rid of it, similar to the citric complexing method reported. When cellulose was introduced, the minimum calcination temperature to acquire pure phase LSCO was significantly lowered to around 600 degrees C for metal-EDTA-cellulose method and 540 degrees C for metal-citric-cellulose method. Low calcination temperature led to relatively high BET area for 21m(2)/g and 22m(2)/g respectively. But the surface area were significantly reduced to 12.7m(2)/g and 12.1m(2)/g respectively when they were further fired at 620 degrees C for 2hr.
语种英语
WOS记录号WOS:000076264000047
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138135
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Shao, ZP,Xiong, GX,Sheng, SS,et al. New methods to prepare perovskite-type La0.8Sr0.2CoO3 catalyst at low temperature[J]. PREPARATION OF CATALYSTS VII,1998,118:431-439.
APA Shao, ZP.,Xiong, GX.,Sheng, SS.,Chen, HR.,Li, L.,...&Poncelet, G.(1998).New methods to prepare perovskite-type La0.8Sr0.2CoO3 catalyst at low temperature.PREPARATION OF CATALYSTS VII,118,431-439.
MLA Shao, ZP,et al."New methods to prepare perovskite-type La0.8Sr0.2CoO3 catalyst at low temperature".PREPARATION OF CATALYSTS VII 118(1998):431-439.
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