摘要
以硫酸氧钛和乙二胺四乙酸（EDTA）为原料，采用络合沉淀法在撞击流一旋转填料床反应器内制备了高纯纳米二氧化钛粉体。用TEM和XRD对粉体的形貌和晶相进行了表征，并分析了EDTA对产品纯度和产率的影响。结果表明：引入EDTA可以有效控制粉体粒径，有利于固液分离，实现产物高纯化。所制备的二氧化钛粉体分散性较好，平均粒径为50～60nm，纯度为99．87％；控制不同的焙烧温度可以得到不同晶相的氧化钛。
High purity nano -TiO2 was prepared from TiOSO4 and EDTA by the complexing -precipitate method in IS - RPB, and powders were characterized by TEM and X - ray powder diffraction. The influence of n （ Ti^4＋ ） ： n （ EDTA ） on productive rate and purity was also investigated. The experimental results show that because of EDTA introduced, particle size can be effectively controlled, and it is heneficial to solid - liquid seperation. So, the high purity product can be obtained. The TiO2 manufactured with the purity of 99.87% and average size of 50 - 60 nm has good dispersity. The TiO2 with different crystal phase can be obtained along with the different calcination temperature controlled.
出处
《无机盐工业》
CAS
北大核心
2006年第4期19-21,共3页
Inorganic Chemicals Industry
基金
山西省高校科技研究开发项目(20041221)
关键词
撞击流一旋转填料床
络合沉淀
纳米二氧化钛
impinging steam- rotating packed bed
complexing- precipitate
titanium oxide nanoparticle
