Method for producing carbon nanotubes
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United States of America Patent
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Jan 9, 2018
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N/A
app pub date -
Aug 2, 2017
filing date -
Aug 4, 2016
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Abstract
Disclosed is a method for producing a carbon nanotube, including supplying a carbon nanotube and a catalyst to a reactor in a predetermined order or simultaneously and fluidizing them to form a fluidized bed, wherein a difference in minimum fluidization velocities (ΔV) according to Formula 1 below is 5 cm/s or less: [Formula 1] Difference in minimum fluidization velocities (ΔV, cm/s)=|Vcat−Vcntproduct| wherein Vcat is a minimum fluidization velocity of catalyst, and VCNTproduct is a minimum fluidization velocity of carbon nanotubes supplied to a reactor in the step of forming a fluidized bed.
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