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Article

Flow Simulations Including Iron Nanoparticle Nucleation, Growth and Evaporation for Floating Catalyst CNT Production

Department of Engineering, University of Cambridge, Trumpington Stree, Cambridge CB2 1PZ, UK
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Author to whom correspondence should be addressed.
Catalysts 2020, 10(12), 1383; https://doi.org/10.3390/catal10121383
Received: 4 November 2020 / Revised: 23 November 2020 / Accepted: 24 November 2020 / Published: 27 November 2020
We use a computational fluid dynamics model coupled with a particle dynamics model to simulate how catalyst nanoparticles nucleate, grow and evaporate over the length of a floating catalyst reactor. We focus on the influence of the flowrate in the reactor and the ferrocene mass fraction on the production of the catalyst nanoparticles. In the downstream region of the reactor, where the majority of CNT growth occurs, we find that, as either the flowrate or the ferrocene mass fraction increases, the particle mass fraction profile changes, with the mass fraction peak shifting away from the centreline. This displacement away from the centreline of the mass fraction peak may explain why the CNTs form a hollow, sock-like, aerogel at the downstream end of the reactor. View Full-Text
Keywords: carbon nanotubes; computational fluid dynamics; floating catalyst; chemical vapour deposition; CNT synthesis; catalytic synthesis; particle modelling carbon nanotubes; computational fluid dynamics; floating catalyst; chemical vapour deposition; CNT synthesis; catalytic synthesis; particle modelling
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MDPI and ACS Style

Gökstorp, F.K.A.; Juniper, M.P. Flow Simulations Including Iron Nanoparticle Nucleation, Growth and Evaporation for Floating Catalyst CNT Production. Catalysts 2020, 10, 1383. https://doi.org/10.3390/catal10121383

AMA Style

Gökstorp FKA, Juniper MP. Flow Simulations Including Iron Nanoparticle Nucleation, Growth and Evaporation for Floating Catalyst CNT Production. Catalysts. 2020; 10(12):1383. https://doi.org/10.3390/catal10121383

Chicago/Turabian Style

Gökstorp, Filip K. A., and Matthew P. Juniper. 2020. "Flow Simulations Including Iron Nanoparticle Nucleation, Growth and Evaporation for Floating Catalyst CNT Production" Catalysts 10, no. 12: 1383. https://doi.org/10.3390/catal10121383

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