摘要
本文采用火焰CVD法制备纳米颗粒,针对其制备纳米颗粒材料过程中颗粒碰撞长大现象,发展了火焰CVD法制备纳米颗粒材料过程的动力理论。针对以工业丙烷为燃料,以TiCl4为原料的火焰CVD法制备纳米TiO2的实验过程为背景,采用一维稳定流动的动力理论模型进行计算,并得出粒子平均直径与反应器长度及平均粒径与颗粒生长准数之间的关系,其计算结果表明,TiO2平均粒径在100nm以内时,与从实验得到地TEM所测结果相符。
A kinetic mode has been developed based on gas molecular dynamics for the growth of nanoparticles due to coagulation in a flame CVD process. For the titania syntheses by a flame CVD process, the mean particle size has been calculated by the kinetic theory at different positions in the reactor and different operational conditions. The calculated results show that the wean particle size is within 100nm and is conincidence with the particle size measure by TEM.
出处
《化工科技市场》
CAS
2004年第6期21-23,共3页
Chemical Technology Market
