A Model for the Activation of Metallic Catalysts for Multi-Walled Carbon Nanotube Growth | Sciact - CRIS-system of Boreskov Institute of Catalysis

A Model for the Activation of Metallic Catalysts for Multi-Walled Carbon Nanotube Growth Conference Abstracts

Conference

Catalyst Design: 4th International School-Conference on Catalysis for Young Scientists
05-06 Sep 2015 , Казань

Source

CATALYST DESIGN. From Molecular to Industrial level / 4th International School-Conference on Catalysis for Young Scientists (ISCC-2015) (September 5-6, 2015 Kazan, Russia)
Compilation, BIC. Novosibirsk.2015. 218 c. ISBN 9785906376114. РИНЦ

Output data

Year: 2015, Article number : OP-10, Pages count : 2

Authors

Krasnikov D.V. ^1,2 , Kuznetsov V.L. ^1,2,3 , Shmakov A.N. ^1,2 , Selyutin A.G. ¹ , Ishchenko A.V. ^1,2

Affiliations

1	Boreskov Institute of Catalysis, Novosibirsk, 630090 Russia
2	Novosibirsk State University, Novosibirsk, 630090 Russia
3	National Tomsk State University, Tomsk, 634050 Russia

Funding (1)

The Ministry of Education and Science of the Russian Federation

14.607.21.0046 (RFMEFI60714X0046)

Due to their unique mechanical, optical properties, high electrical and thermal conductivity multi-walled carbon nanotubes (MWCNTs) are of great interest to be applied in such industries as aerospace, constructions, electronics, medicine etc. Extensive attention to MWCNTs in past two decades has allowed developing of the techniques for nanotube largescale production, for tunable surface functionalization, quality characterization. However, an amount MWCNT-based aplications is still limited. This can be attributed to lack in understanding mechanism and processes to take place during MWCNT growth. Therefore, one fails to fully conrol tailor characterstics of MWCNTs. Such properties of carbon nanotubes as diameter distribution, number and structure of walls, and morphology are determined during the activation of the MWCNT grwoth catalyst. In the present work, a kinetic aspects of the catalyst activation have been studied using in situ [1-3] and ex situ methods (fig. 1). Special attention have been paid to mechanism of the activation of the MWCNT growth catalyst. At least for elementary steps during the activation have been distinguished. There are reduction of the active metals, their sintering accompanied with saturation with carbon with the following nucleation of carbon nanotube [4]. It was found that sintering of the metallic particles is the rate-determining step of the catalyst activation. On the basis of this mechanism a kinetic model for the activation has been developed. The results obtained with this model are in good agreement with expreiment.

Krasnikov D.V. , Kuznetsov V.L. , Shmakov A.N. , Selyutin A.G. , Ishchenko A.V.
A Model for the Activation of Metallic Catalysts for Multi-Walled Carbon Nanotube Growth
In compilation CATALYST DESIGN. From Molecular to Industrial level / 4th International School-Conference on Catalysis for Young Scientists (ISCC-2015) (September 5-6, 2015 Kazan, Russia). – BIC., 2015. – C.38-39. – ISBN 9785906376114.

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