溶胶-凝胶柠檬酸燃烧法制备Sr_2FeMoO_(6-δ)粉体  

Synthesis of Sr_2FeMoO_(6-δ) Powders by Sol-gel Citric Acid Combustion Method

作　　者：盖文超 刘晓林[1] 马景陶[2] 陈建峰[1] 

机构地区：[1]北京化工大学化学工程学院有机无机复合材料国家重点实验室,北京100029 [2]清华大学新型陶瓷与精细工艺国家重点实验室先进核能技术协同创新中心核能与新能源技术研究院,北京100084

出　　处：《人工晶体学报》2015年第10期2767-2770,共4页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51272127;51372014)

摘　　要：采用溶胶-凝胶柠檬酸燃烧法成功制备出Sr2FeMoO6-δ纳米粉体,并研究了溶胶的pH、煅烧气氛、煅烧温度对Sr2FeMoO6-δ粉体形成的影响。利用X射线衍射仪测试分析了粉体的物相以及利用扫描电子显微镜观察了粉体的微观结构。结果表明：胶液的pH为2~3,经过5%H2/Ar还原气氛在900~1000℃煅烧8h,得到单一的双钙钛矿结构的Sr2FeMoO6-δ粉体。Sr2FeMoO6-δ powders were successfully synthesized by sol-gel citric acid combustion method. Some procedure were studied to determine the formation of double perovskite SrzFeMoO6-δ powders, such as pH of sol, calcination atmosphere, and calcination temperature. The phases and crystal structures of SrzFeMoO6-δ powders were characterized by X-ray diffraction （XRD）, and the microstructures of Sr2 FeMoO6-δ powders were observed by scanning electron microscopy （SEM）. The results show that pure double perovskite SrzFeMoO6-δ powders were synthesized by calcination at 900-1000 ℃ for 8 h under 5% Hz/Ar atmosphere.

关 键 词：固体氧化物电解池 阴极材料 Sr2FeMoO6-δ 溶胶-凝胶柠檬酸燃烧法 

分 类 号：TQ116.2[化学工程—无机化工]