In Situ Measurement of Submicron Particles During Synthesis from Gaseous Precursors

气溶胶处理是一种成熟的生产方法， 用于颜料等技术的亚微米颗粒， 可烧结陶瓷 虽然颗粒大小分布 通常控制最终产品的质量， 参数目前无法在线测量，因为 密集的粒子流 此外，数量密度和 反应器中的粒子的温度也是未知的。 这项提议是先进燃料公司的一项联合研究成果。 research公司和缅因州大学合作开发一种传感器 用于高温气体反应的颗粒分析 混合物。 传感器将在线和原位，并将 解卷积傅里叶变换红外光谱，得到 粒度分布。 第一阶段研究将 通过对测量的 已知TiO 2颗粒的红外光谱，以产生精确的 粒度分布 一个简单的实验室规模的火焰将显示 现场测量是可行的。 第二阶段研究 将包括对TiO2火焰的广泛研究， 工业实验室。 第二阶段的最后一步将是 在商用TiO2反应器上进行现场试验。

Aerosol processing is a well established method to produce submicron particles for technologies like pigments and sinterable ceramics. Although the particle size distribution often controls the quality of the final product, this parameter cannot currently be measured on-line because of the dense particle streams. In addition, the number density and temperature of the particles in the reactor are also unknown. This proposal is a combined research effort by Advanced Fuel Research, Inc. and the University of Maine to develop a sensor for particle analysis of high-temperature gas reaction mixtures. The sensor will be on-line and in-situ and will deconvolute the Fourier Transform Infrared spectra to yield the particle size distribution. The Phase I research will demonstrate the technology by deconvoluting the measured infrared spectra of known TiO2 particles to yield an accurate size distribution. A simple laboratory scale flame will show that in-situ measurements are feasible. Phase II research will include extensive research on a TiO2 flame in an industrial laboratory. The final step of Phase II will be a field test on a commercial TiO2 reactor.