水热法合成钛酸盐(MTiO_3)超细粉体  

Preparation of Ultrafine Titanates Powder by Hydrothermal Method

作　　者：刘春英[1] 柳云骐[1] 安长华[1] 王淑涛[1] 薛颖[1] 

机构地区：[1]中国石油大学(华东)化学化工学院,青岛266555

出　　处：《硅酸盐通报》2011年第3期620-624,共5页Bulletin of the Chinese Ceramic Society

摘　　要：本文采用水热法在温和条件下制备出钛酸盐(BaTiO3、PbTiO3、SrTiO3)超细粉体。以Ba(OH)2和钛酸四丁酯为原料,强碱性条件下,水热反应温度150℃、48 h时制备出粒径为20～80 nm的立方相BaTiO3;反应温度为180℃、48 h时制备出粒径为50～80 nm的四方相BaTiO3。以钛酸四丁酯和醋酸铅为原料,在180℃、20 h条件下,碱度为c(NaOH)=1.0 mol/L时,制备出粒径在100～130 nm之间的四方相PbTiO3粉体。以钛酸四丁酯和硝酸锶为原料,在180℃、2 h条件下,碱度为c(KOH)=0.2 mol/L时,制备的SrTiO3粉体粒径在40～90 nm之间。通过控制反应条件制得的钛酸盐粉体分散性好、均匀、纯度高。The uhrafine titanates （BaTiO3, PbTiO3, SrTiO3 ） powder was prepared under milder hydrothermal method condition in this paper. Uing Ba（ OH）2 and Ti（OC4H9）4 as raw materials, the cubic BaTiO3 powder with 20-80 nm was prepared at 150 ℃ for 48 h ; the tetragonal BaTi03 powder with 50-80 nm particle size was prepared at 180℃ for 48 h with high NH3 - H2O concentrations. Uing Pb （CH3COO） 2 and Ti （OC4H9 ）4 as raw materials, the tetragonal PbTiO3 powder with 100-130 nm was prepared at 180 ℃ for 20 h with 1.0 mol/L NaOH. Using Sr（ NO3 ）2 and Ti（ OC4H9 ）4 as raw materials, the SrTiO3 powder with 40-90 nm was prepared at 180℃ for 2 h with 0.2 mol/L KOH. The well dispersed, uniform and pure powers of titanates were obtained.

关 键 词：钛酸盐 水热法 超细粉体 

分 类 号：TF12[冶金工程—粉末冶金]