Production of Fine Particle Materials with High Performance by Microreactor

Abstract

Mixing in micro space is categorized into two concepts: rapid mixing and precise diffusion control. In this paper, the methodology for designing nanoparticles was summarized based on these mixing concepts. First, the synthesis of TiO₂ nano-particles by double-tube microreactor developed was introduced. It was shown that a precise diffusion control by designing a micro space had a significant effect for individual strict control of nucleation and particle growth processes. Next, the micro mixer, so called K-M mixer, was introduced as a typical micro mixer for strict control of nucleation process. The performance of K-M mixer on the processing of nanoparticles was demonstrated by introducing several examples; production of monodisperse nanoparticles of metal and organic matter, core-shell particle synthesis, alloy catalyst particle synthesis, high efficiency synthesis of MOF, and so on. The results shown here clearly indicate that microreactor technology will be a powerful tool for nano-processing. Finally, I discussed how to use the microreactor as a production technology.

Graphical Abstract