Nano Science and Technology Institute
Nanotech 2010 Vol. 1
Nanotech 2010 Vol. 1
Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites
Chapter 3: Nanoparticle Synthesis & Applications

Gas-phase synthesis of highly-specific nanoparticles on the pilot-plant scale

Authors:T. Huelser, S.M. Schnurre, C. Schulz, H. Wiggers
Affilation:Institute of Energy and Environmental Technology, DE
Pages:330 - 333
Keywords:nano particle synthesis, gas-phase, pilot plant scale
Abstract:Highly-specific nanoparticles from the gas-phase provide promising properties for a large variety of applications as the size dependence of their properties allows to tailor materials for specific applications. Industrial nanoparticle production, however, is covered by cost-effective flame processes with high throughput. The quality of the resulting materials is limited and often agglomerates with a broad size distribution are formed. Highly specific nanomaterials, however, are synthesized in specific lab-scale reactors - often available in minute quantities. We designed a unique pilot-plant-scale particle synthesis plant enabling for three different synthesis routes using either a hot-wall reactor, a flame reactor or a plasma reactor. Depending on precursor and gas-phase composition, materials like metals, metal oxides or (doped) semiconductors are generated. The chemical composition of the nanoparticles can be adjusted to pure, doped, mixed and composite materials. Pressure, precursor concentration, and residence time can be varied to fine-tune particle size and morphology. The set-up provides ample opportunities for sampling and in-situ measurements and the reactors enable for the synthesis of significant amounts (up to kg/h) of nanoparticles without losing their specification. Therefore, we are able to produce sufficient amounts for first approaches in industrial processes.
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