钛酸锶粉体合成新方法研究  

STUDY ON NEW METHOD FOR SYNTHESIS OF STRONTIUM TITANATE POWDER.

作　　者：朱启安[1] 石荣恺[2] 黄伯清[2] 谭仪文 

机构地区：[1]湘潭大学化学学院,湖南湘潭411105 [2]湘潭大学物理系 [3]株洲冶炼厂中心化验室

出　　处：《无机盐工业》2002年第2期5-7,共3页Inorganic Chemicals Industry

摘　　要：以四氯化钛和氯化锶为原料、碳酸铵和氨水作沉淀剂化学共沉淀法合成钛酸锶粉体 ,研究了工艺条件对产品纯度和锶钛比的影响 ,最佳反应条件为 :氯化锶与四氯化钛摩尔比为 1.0 2 ,碳酸铵与氯化锶摩尔比为 1.4 0 ,反应温度为室温 ,反应时间 4h ,pH =10 ,煅烧温度 90 0℃ ,煅烧时间 4h。所得产品经化学、红外光谱、电镜、X—射线衍射和原子发射光谱分析 ,分析结果显示 :产品纯度高、粒径小。The strontium titanate powder was synthesized by chemical coprecipitation method,when TiCl 4 and SrCl 2·6H 2O were used as raw materials and (NH 4) 2CO 3 and NH 3·H 2O as precipitation agents.The influences of technology conditions on the purity of product and its ratio of Sr to Ti were studied.The optimal reaction conditions are as follows:SrCl 2/TiCl 4=1.02(mol);(NH 4) 2CO 3/SrCl 2=1.40;reaction temperature:room temperature;reaction time=4 h;pH=10;calcining temperature=900 ℃;calcining time=4 h.Product prepared was analyzed by chemical analysis,IR,SEM,X-Ray and AES,the analysis results show that the purity of strontium titanate powder prepared is high,particle diameter is small and the ratio of Sr to Ti is good.

关 键 词：电子陶瓷 钛酸锶 合成 四氯化钛 氯化锶 碳酸铵 氨水 沉淀剂 化学共沉淀法 

分 类 号：TQ132.33[化学工程—无机化工] TQ174.758