Gas Phase Manufacture of Particulates in Aerosol Reactors

本研究是关于气溶胶反应器中反应动力学(均相和颗粒表面控制)与气溶胶动力学(颗粒生长、凝聚、迁移和沉积)的相互作用以及这些因素对产物粉末表征的影响的实验和理论研究。将特别强调掺杂剂对所得颗粒的尺寸分布的影响。作为一个案例研究，将通过FTIR光谱、近实时气溶胶测定和捕获颗粒的显微镜来研究在炉中通过卤化物蒸汽的氧化形成的二氧化钛粉末的生产。气溶胶反应器用于制造碳黑、颜料、高级陶瓷粉末和光波导管。目前这类反应堆的设计在很大程度上是经验的。这项研究应该有助于将此类反应堆的设计建立在更坚实的基础上，并导致对生产的粉末进行更好的质量控制。

This research is an experimental and theoretical study of the interplay of reaction kinetics (both homogeneous and particle surface controlled) with aerosol dynamics (particle growth, coagulation, migration, and deposition) in aerosol reactors and the influence of these factors on product powder characterization. Special emphasis will be placed of the effect of dopants on the size distribution of the resulting particles. As a case study, production of titanium oxide powders formed by the oxidation of halide vapors in a furnace reactor will be investigated by FTIR spectroscopy, near real time aerosol sizing, and microscopy of captured particles. Aerosol reactors are used in manufacture of carbon blacks, pigments, powders for advanced ceramics, and lighwave guides. Current design of such reactors is largely empirical. This research should help put the design of such reactors on a firmer basis and lead to greater quality control of the powder produced.