Patent ID: 7897209
Filing Date: 2011-03-01
Classification: B82Y,C01B,C01P,C23C

Abstract:
1. A method for producing an aligned carbon-nanotube aggregate by synthesizing the aligned carbon-nanotube aggregate on a base material having a catalyst on a surface thereof, the method comprising: a formation step of causing an environment surrounding the catalyst to be an environment of a reducing gas and heating at least either the catalyst or the reducing gas, the formation step being executed in a formation unit which has a formation furnace; a growth step of synthesizing the aligned carbon-nanotube aggregate by causing the environment surrounding the catalyst to be an environment of a raw material gas and by heating at least either the catalyst or the raw material gas, the growth step being executed in a growth unit which has a growth furnace, means to prevent gas mixing being used to prevent gas from the formation furnace from mixing with gas from the growth furnace, the means to prevent gas mixing being provided in a connection section via which the growth furnace and formation furnace of the respective units are spatially connected.