Electronic monitoring of near- and supercritical water based metal oxide nano-particle precipitation within ceramic micro-reaction systems

提交项目的主要目标是通过使用小型化传感器结合（进一步开发的）反应流系统模拟方法，获得有关化学机制、相变现象以及金属氧化物纳米颗粒成核和生长过程的良好知识。为了实现这一目标，有必要实现在近/超临界水中合成金属氧化物纳米颗粒的微反应器，并对传感器技术、流量控制和停留时间进行优化。为此，必须对微反应系统进行优化，使系统配备大量传感器，以便电化学阻抗谱（EIS）可以监测：a)混合过程，b)（多相）流中的反应过程，c)具有空间和时间分辨率的颗粒形成和生长。

The main objective of the submitted project is to gain sound knowledge about chemical mechanisms, phase transition phenomena as well as nucleation and growth processes of metal oxide nanoparticles by using miniaturized sensors in combination with (further developed) simulation methods in reactive flow systems. In order to achieve this goal, it is necessary to realize a micro-reactor for the synthesis of metal oxide nanoparticles in near- / supercritical water, optimized with regard to sensor technology, flow control and residence time. For this purpose, the micro-reaction system must be optimized in such a way that the system is equipped with a large number of sensors, so that electrochemical impedance spectroscopy (EIS) can be used to monitor: a) the mixing process, b) the reaction process in (multi-phase) flows, and c) particle formation and growth with spatial and temporal resolution.