TiCl4气相氧化制备TiO2颗粒的粒径控制研究

摘要

在氧化反应器中,利用TiCl4氧化反应制备TiO2颗粒,研究了甲苯流量、反应温度、反应停留时间、KCl的加入等对TiO2颗粒粒径和粒径分布的影响.结果表明,TiO2粒径随甲苯流量增大、反应温度升高和停留时间延长而增大,KCl的加入有利于控制TiO2粒径.%TiO2 particles were synthesized by the gas-phase oxidation of titanium tetrachloride in a high temperature gas phase reactor. The effects of toluene flow rate,reaction temperature residence time and KCl flow rate on TiO2 particle size were studied. The result showed that the TiO2 particle size increases with increasing toluene flow rate, reaction temperature or residence time,and the enhancement of KCl flow rate is benefit for controlling TiO2 particle size.