Detailed numerical simulation of single-walled carbon nanotube synthesis in a radio-frequency induction thermal plasma system
| Autor: | Christopher T. Kingston, Gervais Soucy, Benoit Simard, Keun Su Kim, S Arabzadeh Esfarjani, Javad Mostaghimi, Seth B. Dworkin |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
History
Materials science Reaction rates Chemistry models RF plasma systems CFD codes chemistry.chemical_element Nanotechnology Modified model Carbon nanotube Computational fluid dynamics Wave plasma interactions Chemical reaction Education law.invention Reaction rate Radio-frequency induction Single-walled carbon nanotubes (SWCN) law Single-walled carbon Different operating conditions Chemical reactions Radio frequencies Yield rates Computer simulation Chemical model Plasma theory Plasma Numerical calculation Metal catalyst Plasma devices Carbon clusters Computer Science Applications RF plasma chemistry Chemical physics Yield (chemistry) Axisymmetric Thermofluid fields Carbon Induction thermal plasma Forecasting |
| Popis: | 2D axisymmetric numerical calculations are conducted to model the thermo-fluid fields and chemical reactions leading to the formation of SWCNTs in an RF plasma system. A modified version of the SWCNT "reduced" chemical model is used to estimate the formation of SWCNT in an RF plasma system for the first time. The "reduced" model incorporates 14 species and 36 chemical reactions to predict the formation of metal and carbon clusters and SWCNTs. By combing the chemistry model into the RF plasma CFD code, the formation and development of carbon and metal catalyst clusters and their reactions which produce SWCNTs are shown. The chemistry model is shown to under-predict the yield rate of SWCNT. In order to better predict the yield rate, a sensitivity analysis is performed to modify the dominant reaction rates. The modified model predicts the yield of SWCNTs correctly within the range reported experimentally. However, more studies should be conducted to validate the accuracy of the model for different operating conditions. 12th High-Tech Plasma Processes Conference, HTPP 2012, 24 June 2012 through 29 June 2012, Bologna |
| Databáze: | OpenAIRE |
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