摘要
报道了用相转移法制备高纯超细ＴｉＯ＿２的新技术；探讨了Ｔｉ（ＩＶ）从有机相转移到水相发生水解反应的机理；通过ＴＧ－ＤＴＡ分析以及ＸＲＤ物相分析对水解产物的组成、热分解机理，晶型转变规律进行研究，确立了水解产物焙烧的最佳温度，通过激光散射粒度仪、透射电镜、微量元素分析对热分解产物ＴｉＯ＿２粉体的各项参数进行综合分析结果表明，用该技术制备的ＴｉＯ＿２粉体纯度高、平均粒径小、粒度分布窄和分散性好，符合功能陶瓷对ＴｉＯ＿２粉体的质量要求。
A new preparation process of ultrafine TiO_2 powder by phase transfer reaction is reported in this paper. The mechanism of Ti(IV)transfered from organic phase to hydrolysis is discussed. Simultaneously,thermal decomposition of Ti(OH)_4 and crystal structure transformation is studied to get the optimal calcination temperature. The analyzed results of the TiO_2 powder by BI-90 particle sizer,TEM and ASS indicate that the prepared TiO_2 powedr with low cost is of high purity,good dispersity,about 120nm radium,and is suitable for functional ceramics manufacture.
出处
《压电与声光》
CSCD
北大核心
1995年第5期45-48,共4页
Piezoelectrics & Acoustooptics
关键词
超微粉体
相转移反应
制备
电子陶瓷
二氧化钛
titanium oxide,ultrafine powder,phase transfer reaction,preparation
