Single-wall carbon nanotubes synthesized using organic additives to Co-Mo catalysts supported on nanoporous MgO

被引：89
作者：
Rashidi, A. M.
Akbarnejad, M. M.
Khodadadi, A. A.
Mortazavi, Y.
Ahmadpourd, Ali
机构：
[1] Univ Tehran, Catalyst & Nanostruct Mat Res Lab, Sch Chem Engn, Tehran, Iran
[2] RIPI, Carbon Res Ctr, Tehran, Iran
[3] Univ Tehran, Nanoelect Ctr Excellence, Tehran, Iran
[4] Ferdowsi Univ Mashhad, Fac Engn, Mashhad, Iran
来源：
NANOTECHNOLOGY | 2007年 / 18卷 / 31期
关键词：
D O I：
10.1088/0957-4484/18/31/315605
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Carbon nanotubes (CNTs) were synthesized by catalytic decomposition of 20% methane in hydrogen over Co-Mo/MgO catalysts at 1000 degrees C. The catalysts were prepared by a modified sol-gel method, using sorbitol, ethylenediamine tetraacetic acid (EDTA), tartaric acid and citric acid as organic additives. The specific surface area (SSA) of the catalysts changes with the organic additives in the order of sorbitol > EDTA > citric acid > tartaric acid. As a result the crystallite size, dispersion of Co-Mo and hence the quality of the carbon nanotubes change with the organic additive. Up to 180 wt% yield of high quality single-wall carbon nanotubes (SWNTs) with inner-wall diameter close to 1.0-1.2 nm are obtained on the catalyst prepared in the presence of sorbitol.
引用
收藏
页数：5
相关论文
共 20 条
[1]   Resonant Raman study of the structure and electronic properties of single-wall carbon nanotubes [J].
Alvarez, L ;
Righi, A ;
Guillard, T ;
Rols, S ;
Anglaret, E ;
Laplaze, D ;
Sauvajol, JL .
CHEMICAL PHYSICS LETTERS, 2000, 316 (3-4) :186-190
[2]   High specific surface area carbon nanotubes from catalytic chemical vapor deposition process [J].
Bacsa, RR ;
Laurent, C ;
Peigney, A ;
Bacsa, WS ;
Vaugien, T ;
Rousset, A .
CHEMICAL PHYSICS LETTERS, 2000, 323 (5-6) :566-571
[3]   High H2 uptake by alkali-doped carbon nanotubes under ambient pressure and moderate temperatures [J].
Chen, P ;
Wu, X ;
Lin, J ;
Tan, KL .
SCIENCE, 1999, 285 (5424) :91-93
[4]   Large-scale synthesis of single-wall carbon nanotubes by catalytic chemical vapor deposition (CCVD) method [J].
Colomer, JF ;
Stephan, C ;
Lefrant, S ;
Van Tendeloo, G ;
Willems, I ;
Kónya, Z ;
Fonseca, A ;
Laurent, C ;
Nagy, JB .
CHEMICAL PHYSICS LETTERS, 2000, 317 (1-2) :83-89
[5]   Single-wall nanotubes produced by metal-catalyzed disproportionation of carbon monoxide [J].
Dal, HJ ;
Rinzler, AG ;
Nikolaev, P ;
Thess, A ;
Colbert, DT ;
Smalley, RE .
CHEMICAL PHYSICS LETTERS, 1996, 260 (3-4) :471-475
[6]  
FUG S, 2001, CATAL LETT, V75, P65
[7]   CATALYTIC GROWTH OF SINGLE-WALLED NANOTUBES BY LASER VAPORIZATION [J].
GUO, T ;
NIKOLAEV, P ;
THESS, A ;
COLBERT, DT ;
SMALLEY, RE .
CHEMICAL PHYSICS LETTERS, 1995, 243 (1-2) :49-54
[8]   SINGLE-SHELL CARBON NANOTUBES OF 1-NM DIAMETER [J].
IIJIMA, S ;
ICHIHASHI, T .
NATURE, 1993, 363 (6430) :603-605
[9]   HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].
IIJIMA, S .
NATURE, 1991, 354 (6348) :56-58
[10]   Controlled production of single-wall carbon nanotubes by catalytic decomposition of CO on bimetallic Co-Mo catalysts [J].
Kitiyanan, B ;
Alvarez, WE ;
Harwell, JH ;
Resasco, DE .
CHEMICAL PHYSICS LETTERS, 2000, 317 (3-5) :497-503
12