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
Indexed ByISTP ; SCI
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
AbstractA 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.
WOS IDWOS:000076264000047
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Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
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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