四方相钛酸钡超细粉体的水热合成研究  

Study on hydrothermal synthesis of tetragonal barium titanate superfine powders

作　　者：刘春英[1] 柳云骐[1] 安长华[1] 王槐平[1] 周欣明[1] 盖仕辉[1] 

机构地区：[1]中国石油大学(华东),山东青岛266555

出　　处：《无机盐工业》2012年第3期16-18,共3页Inorganic Chemicals Industry

摘　　要：采用水热法在温和条件下制备出分散性好的四方相钛酸钡超细粉体。通过考察反应物钡(Ba2+)与钛(Ti4+)物质的量比、反应温度、反应时间、反应体系碱度等条件对制备四方相钛酸钡的影响,得出最佳制备条件。在反应物Ba2+与Ti4+物质的量比为2.0∶1、强碱性条件、反应温度为180℃、反应时间为72 h条件下,可以制备出粒径在80～140 nm的四方相钛酸钡(BaTiO3)超细粉体。采用化学分析法测得钛酸钡样品Ba与Ti物质的量比为0.995～1.005。在500 L高压釜中进行了工业放大实验,采用工业原料在动态条件下制备出粒径为100～200 nm的四方相钛酸钡超细粉体。Well dispersed tetragonal BaTiO3 superfine powders were prepared by hydrothermal method under milder conditions.Influences of reaction conditions,such as amount-of-substance ratio of Ba2＋ to Ti4＋,reaction temperature,time,and alkalinity of the reaction system,on hydrothermal synthesis of tetragonal BaTiO3 nano-powder were investigated systematically and the optimized preparation conditions were obtained.Tetragonal BaTiO3 powders with particle size of 80～140 nm could be prepared when the reactants with amount-of-substance ratio of Ba2＋ to Ti4＋ of 2.0∶1,reacted at 180 ℃ for 72 h under strong alkali condition.Chemical analysis result showed the amount-of-substance ratio of barium to titanium of the sample was at 0.995～1.005.Tetragonal BaTiO3 powders with particle size of 100～200 nm were successfully prepared with the industrial materials at the rotating condition in 500 L high pressure reactor in industrial scale experiment.

关 键 词：钛酸钡 四方相 纳米粉体 水热合成 工业实验 

分 类 号：TQ174[化学工程—陶瓷工业]