Patent ID: 7790228
Filing Date: 2010-09-07
Classification: B82Y,C01B

Abstract:
1. A high-efficiency synthesis method of a carbon nanostructure, the method comprising: bringing a raw material gas and a catalyst into contact with each other under reaction conditions so as to produce a carbon nanostructure, wherein: initiation of the contact between the raw material gas and the catalyst is carried out instantaneously by: (a) instantaneously initiating, under electronic control or computer control, feed of the raw material gas to the catalyst that is stationary in a reaction chamber; (b) under a condition where the raw material gas is built up, causing the catalyst to instantaneously move from outside the raw material gas to inside the raw material gas; (c) under a condition where the raw material gas is built up, instantaneously spraying powders of the catalyst to the raw material gas so that the catalyst is instantaneously moved from outside the raw material gas to inside the raw material gas; or (d) under a condition where the catalyst is placed in the raw material gas that is built up, subjecting the catalyst to beam irradiation, infrared beam irradiation, electron beam radiation, or ion beam irradiation so that a temperature of the catalyst or a temperature in a vicinity of the catalyst is instantaneously increased to a reaction temperature.