Method for heat treating gas phase purifying carbon nanometre tube in diffusion furnace

Application Number: 00109212
Application Date: 2000.06.14
Publication Number: 1277148
Publication Date: 2000.12.20
Priority Information: 1999/6/15 KR 22416/1999; 2000/4/27 KR 22526/2000
International: C01B31/02
Applicant(s) Name: Lee Chul-Chim
Inventor(s) Name: Lee Chul-Chim;Ryu Chae-Evn
Patent Agency Code: 72002
Patent Agent: gan ling
Abstract A method of purifying carbon nanotubes in a gas phase by pyrolysis of acid gas. The carbon nanotube purification method includes purifying carbon nanotubes using an acid gas thermally decomposed in a diffusion furnace having a tube suitable for thermal treatment. The acid gas includes hydrochloric acid gas or nitric acid gas, and can be supplied along with a diluent gas, such as hydrogen gas, into the tube.