Process control strategies for the gas phase synthesis of silicon nanoparticles
| Autor: | Wolfgang Peukert, Günter Leugering, Richard Körmer, Michael Gröschel, Maximilian Walther |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Silicon Applied Mathematics General Chemical Engineering Nucleation Nanoparticle chemistry.chemical_element Nanotechnology General Chemistry Industrial and Manufacturing Engineering Reaction rate constant chemistry Chemical engineering Scientific method Process control Particle Particle size |
| Zdroj: | Chemical Engineering Science. 73:181-194 |
| ISSN: | 0009-2509 |
| DOI: | 10.1016/j.ces.2012.01.035 |
| Popis: | In this contribution the identification of new reaction conditions for the production of nearly monodisperse silicon nanoparticles via the pyrolysis of monosilane in a hot wall reactor is considered. For this purpose a full finite volume model has been combined with a state-of-the-art trust-region optimisation algorithm for process control. Verified against experimental data, specific process conditions are determined accomplishing a versatile range of prescribed product properties. The main achievement of the optimisation is the possibility to control the different mechanisms in the particle formation process by mainly adjusting the temperature profile. Due to a successful separation of the nucleation and growth process, significantly narrower particle size distributions are obtained. Moreover, the presented optimisation framework establishes rate constants based on measured data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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