Engineering Aspects of Preparation of Nanocrystalline Particles in Microemulsions
Source: Journal of Nanoparticle Research, Volume 1, Number 2, 1999 , pp. 267-276(10)
Abstract:Engineering aspects of the preparation of palladium nanoparticles in non-ionic w/o-microemulsions are examined. In order to achieve reproducible synthesis conditions a semi-batch reactor with a standardized design is used. Influences of the stirring rate and of different ways of concentration control on the product properties are observed. For reproducible synthesis it is important to establish appropriate and defined preparation conditions. Monodisperse palladium particles of around 5 nm size are obtained by adding the microemulsion containing the palladium salt at a constant feed rate to the precharged microemulsion containing the reducing agent. A quantitative kinetic model is proposed to describe particle formation in microemulsions. Unknown parameters of the model have been estimated by independent examinations or can be achieved by fitting to the experimental data.
Document Type: Regular Paper
Affiliations: 1: Institut für Technische Chemie, Sekr. TC 8, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany 2: Institut für Technische Chemie, Sekr. TC 8, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany (E-mail: Schomaecker@tu-berlin.de)
Publication date: January 1, 1999