Development of a New Microreactor Based on Annular Microsegments for Fine Particle Production

Abstract

A new type of microreactor for fine particle production was developed to achieve stable continuous production, precise control of particle properties (such as particle size, distribution, and shape), and high throughput. The proposed microreactor, the annular multi-lamination microreactor, had an annular five-layer structure in a column at the center of the microreactor. By utilizing the microreactor, the crystallization of fine silver halide particles was examined under various operational conditions. From these results, optimum structures and operation methods for the high-throughput production of fine particles, which do not cause clogging of the microchannel, were determined. In addition, we give a simple method of equaling-up for industrial production. Thus, it is expected that the concepts of design, operational method, and equaling-up shown here can be incorporated into practical microreaction technology in the industrial field of fine particle production.

Explanation of the size dependent in-plane optical resonance of triangular silver nanoprisms

“…This situation changed with the introduction of microfluidic techniques for the preparation of nanoparticles. [24][25][26] Short mixing times 27 and well reproducible flow patterns lead to a significant improvement of the process and product homogeneity under microfluidic conditions. 28 This microfluidic approach was also successfully applied for the continuous flow synthesis of noble metal nanoparticles.…”

Development in Microreactor Technology for Nanoparticle Synthesis

“…100 The reactor contains a thermal jacket for controlling the temperature of the reaction. The reaction channel is made up of stainless steel, and consists of a column, a cylindrical outer pipe, and four inner cylindrical pipes with different diameters, for injecting five different fluids.…”

Mikrofluidik in der anorganischen Chemie

“…Über die Synthese von dünnen AgX-Nanopartikeln (X = Cl oder Br) in einem ringförmigen, mehrschichtigen Mikroreaktor wurde von Nagasawa und Mae berichtet. [123] [124] Die an drei Positionen im Mikrokanal aufgenommenen Röntgen-Nahkanten-Absorptions-Spektren (XANES) an der Cobalt-K-Kante zusammen mit Referenzspektren der Vorstufen und des am Ende des Mikrofluidiksystems aufgefangenen Produkts zeigten, dass aus der räum-lichen Auflösung innerhalb des Mikroreaktors eine zeitliche Auflösung der Reaktion in der Größenordnung von Millisekunden erzielt werden kann -dies demonstriert eindrucksvoll die ¾quivalenz von Position und Zeit in der Mikrofluidik mit kontinuierlichem Durchfluss.…”