Nanoparticle aerosol flow reactor

Fig. 3 SEM (A,B) and TEM (C) images of hollow nanoparticles produced by an aerosol flow reactor. (With permission from Ref. f)...

Eerikainen, H. Watanabe, W. Kauppinen, E.I. Ahonen, P.P. Aerosol flow reactor method for synthesis of drug nanoparticles. Eur. J. Pharm. Biopharm. 2003, 55 (3), 357-360. 

SWCNTs, MWCNTs, and CNFs have been synthesized by a floating catalyst method with different tube diameters achieved by controlling the FcH/benzene mole ratio. It is evident that small FcH/C ratios yield SWCNTs, and higher ratios CNFs [35]. SWCNTs were synthesized by the CO disproportionation reaction on Fe catalyst particles formed by FcH vapor decomposition in a laminar flow aerosol (floating catalyst) reactor [31], A mixture of CH4/H2/Ar with added Fe(CO)j was reacted in the presence of a microwave plasma torch for the synthesis of MWCNTs covered by iron oxide nanoparticles (NPs) [33]. 

Instead of assigning different shear rates, he employed different breakage rate expressions for the two zones. The problem of coupling population balance models with fluid flow models has received some attention recently and coupled PB-CFD models have been developed for a wide variety of processes such as fluidization [70], gas-liquid reactions in bubble columns [71] and nanoparticle synthesis in flame aerosol reactors [72]. Complete description of aggregation in turbulent environments requires simultaneous solution of basic balance equations for mass, momentum, energy and concentration of species present along with population balances for particles/aggregates of different size classes. 

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