Search International and National Patent Collections

1. (WO2018160041) METHOD FOR MANUFACTURING MULTI-WALL CARBON NANOTUBES USING CONTINUOUS TYPE PROCESS

Pub. No.:    WO/2018/160041    International Application No.:    PCT/KR2018/002548
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Sat Mar 03 00:59:59 CET 2018
IPC: C01B 32/162
C01B 32/164
B01J 23/74
B01J 35/00
B01J 23/78
B01J 21/02
B01J 21/06
B01J 19/00
B01J 8/18
Applicants: KOREA KUMHO PETROCHEMICAL CO., LTD.
금호석유화학 주식회사
Inventors: RYU, Sang Hyo
류상효
SUNG, Hyun Kyung
성현경
JEONG, Chung Heon
정충헌
KIM, Dong Hwan
김동환
Title: METHOD FOR MANUFACTURING MULTI-WALL CARBON NANOTUBES USING CONTINUOUS TYPE PROCESS
Abstract:
An embodiment of the present invention provides a method for manufacturing multi-wall carbon nanotubes, the method comprising the steps of: (a) dissolving a metal precursor in a solvent to prepare a precursor solution; (b) perform thermal decomposition while spraying the precursor solution into a reactor, thereby forming a catalyst powder; and (c) introducing the catalyst powder into a fluidized-bed reactor heated to 600-900°C and spraying a carbon-based gas and a carrier gas to synthesize multi-wall carbon nanotubes from the catalyst powder, wherein steps (a) to (c) are performed in a continuous type and wherein the catalyst powder contains metal components according to equation 1 below. Ma:Mb = x:y, wherein Ma represents at least two metals selected from Fe, Ni, Co, Mn, Cr, Mo, V, W, Sn, and Cu; Mb represents at least one metal selected from Mg, Al, Si, and Zr; x and y each represent the molar ratio of Ma and Mb; and x+y = 10, 2.0≤x≤7.5, and 2.5≤y≤8.0.