Engineering Initiation Award: Aerosol Reactor Engineering

叙述：将在高温气溶胶流动反应器中对四氯化钛（TiCl）氧化法制备细二氧化钛（TiO）粉末进行实验研究。这个项目的重点是了解化学动力学和气溶胶动力学之间的相互作用，在制造TiO颗粒。在精确控制的实验条件下，将在气溶胶流动反应器中对化学动力学和产品气溶胶特性进行详细的同时测量。用傅里叶变换红外（FTIR）分光光度计测量TiCl的氧化速率。将推导出基本反应速率表达式。TiO的气溶胶尺寸特性将由传统的气溶胶仪器测量。深入研究了掺杂剂四氯化硅（SiCl）对产物钛尺寸和多分散性的影响。将根据基本气溶胶过程（化学反应、成核、冷凝和凝聚）发展TiO颗粒产生的理论。该研究将促进气溶胶工艺的发展，用于制造高遮盖力颜料和先进陶瓷的陶瓷粉末。

Narrative: Production of fine titanium dioxide (TiO) powders by titanium tetrachloride (TiCl) oxidation will be investigated experimentally in a high temperature aerosol flow reactor. The focus of this project is on understanding the interplay between chemical kinetics and aerosol dynamics during manufacture of TiO particles. Detailed, simultaneous measurements of chemical kinetics and product aerosol characteristics in an aerosol flow reactor will be made under precisely controlled experimental conditions. The rate of TiCl oxidation will be measured by a Fourier transform infrared (FTIR) spectrophotometer. Fundamental reaction rate expressions will be derived. The aerosol size characteristics of TiO will be measured by conventional aerosol instruments. The effect of dopant silicon tetrachloride (SiCl) on product titania size and polydispersity will be thoroughly investigated. A theory for TiO particle production will be developed in terms of basic aerosol processes (chemical reaction, nucleation, condensation and coagulation). This study will trigger the development of aerosol processes for manufacture of high hiding power pigments and ceramic powders for advanced ceramics.