摘要：建立了CO气相燃烧合成纳米颗粒材料技术 ,利用TiCl4 气相氧化合成粒度小于 10 0nm纯金红石或锐钛和金红石混合相的TiO2 颗粒。混合温度升高、TiCl4 进料量减小、停留时间缩短时 ,二氧化钛颗粒粒度减小。随混合温度升高、TiCl4 进料增大以及停留时间延长 ,TiO2 颗粒中金红石含量增大。在反应物中加入AlCl3 作为晶型调节剂时 ,金红石含量增大。
关键词：气相合成；燃烧；二氧化钛；纳米颗粒
Abstract：Reacting TiCl 4 with high temperature O 2 in CO combustion reactor produced nanosize TiO 2 particle.The mean particle diameter is less than 100 nm.With the increasing of the mixing temperature and decreasing of the TiCl 4 flow rate and resident time,the particle size decreases.Whth the increasing of the mixing temperature,TiCl 4 flow rate and residence time rutile content of TiO 2 particle increases.When the AlCl 3,which is dopant,is feed into the reactant,the rutile content of the particle increases.
Keywords：gas-phase synthesis;combustion;TiO 2,nanoparticle
