Synthesis of nanostructured perovskite powders via simple carbonate co-precipitation

被引：6
|
作者：
Cristiani, Cinzia [1 ]
Dotelli, Giovanni [1 ]
Mariani, Mario [2 ]
Pelosato, Renato [1 ]
Zampori, Luca [1 ]
机构：
[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, I-20133 Milan, Italy
[2] Politecn Milan, Dipartimento Energia, I-20156 Milan, Italy
来源：
CHEMICAL PAPERS | 2013年 / 67卷 / 05期
关键词：
perovskite; nanostructure; co-precipitation; synthesis; OXIDE-ION CONDUCTOR; CRYSTAL-STRUCTURE; DOPED LAGAO3; CATHODE;
D O I：
10.2478/s11696-013-0306-z
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A very simple, cost-effective, chloride- and alkali-free, carbonate co-precipitation synthesis in aqueous medium was applied in the preparation of perovskite-type lanthanum manganese oxide-based powders, i.e. La0.70Sr0.30MnO3-delta (LSM) and La0.75Sr0.25Cr0.5Mn0.5O3-delta (LSCrM). The precursors so obtained yielded nano-structured perovskite oxides when treated at 900A degrees C and 800A degrees C, respectively. The measured BET surface areas were in the low-end range for high temperature oxides (4 m(2) g(-1) and 10 m(2) g(-1)) but the X-ray crystallite size was as low as 50 nm for LSCrM and 90 nm for LSM.
引用
收藏
页码：526 / 531
页数：6
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