Carbon Nanotubes' and Silicon Carbide Whiskers' Growth on Metal Catalysts: Common Features of Formation Mechanisms
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Conference |
2004 MRS Fall Meeting, Symposium HH – Functional Carbon Nanotubes
29 Nov - 2 Dec 2004
,
Boston
|
| Source |
2004 MRS Fall Meeting. Symposium HH – Functional Carbon Nanotubes, 29 Nov - 2 Dec 2004, Boston
Compilation,
2004.
|
| Journal |
Materials Research Society Symposium Proceedings
ISSN: 0272-9172
|
| Output data |
Year: 2005,
Volume: 858E,
Number: Functional Carbon Nanotubes,
Article number
: HH3.14,
Pages count
: 6
DOI:
10.1557/PROC-858-HH3.14
|
| Authors |
Kuznetsov Vladimir
1
,
Usoltseva Anna
1
,
Mazov Ilya
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Lavrentieva 5, 630090, Novosibirsk, Russia
|
|
Funding (3)
|
1
|
Civilian Research and Development Foundation
|
NO-008-X1
|
|
2
|
Russian Foundation for Basic Research
|
02-03-32296
|
|
3
|
International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union
|
YSF 03-55-1816
|
The formation mechanisms of carbon deposits and silicon carbide whiskers on metal surface catalysts have some common steps. The most important are: (1) the formation of metal particle alloys oversaturated with carbon or silicon and carbon atoms and (2) the nucleation of corresponding deposits on the metal catalyst surface. A thermodynamic analysis of the carbon and/or silicon carbide nucleation on the metal surface was performed. The master equations for the dependence of critical radius of carbon or SiC nucleus on reaction parameters, such as reaction temperature, supersaturation degree of catalyst particles with C (or Si and C), work of adhesion of metal to carbon (or metal to SiC), were obtained. These equations combined with the phase diagram approach can be used for the description of different scenarios of carbon and/or SiC deposits formation and for the development of the main principles of catalyst and promoters design.