Synthesis of Multiwall Carbon Nanotubes over Cobalt Catalysts | Sciact - CRIS-system of Boreskov Institute of Catalysis

Synthesis of Multiwall Carbon Nanotubes over Cobalt Catalysts Full article

Journal

Theoretical Foundations of Chemical Engineering
ISSN: 0040-5795 , E-ISSN: 1608-3431

Output data

Year: 2007, Volume: 41, Number: 5, Pages: 634-638 Pages count : 5 DOI: 10.1134/S0040579507050314

Tags

Pyrolysis; Multiwall Carbon; Catalyst Sample; Tungsten Oxide; Cobalt Catalyst

Authors

Yuferev N.N. ¹ , Blinov S.N. ¹ , Zavarukhin S.G. ² , Timofeev A.A. ⁴ , Rakova E.V. ³ , Rakov E.G. ¹

Affiliations

1	Mendeleev University of Chemical Technology, Miusskaya pl. 9, Moscow, 125190 Russia
2	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 5, Novosibirsk, 630090 Russia
3	Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119991 Russia
4	Moscow Engineering Physics Institute, Kashirskoe sh. 31, Moscow, 125080 Russia

CH4 pyrolysis over Co/Al2O3 (60 wt %) catalysts, prepared by different methods and doped with tervalent-metal oxides, was studied gravimetrically under isothermal conditions at 600–750°C and the atmospheric pressure. The process starts at the maximum rate and decays with time. The pyrolysis rate as a function of linear CH4 rate peaks at 40 cm/min. With the provision of the maximum process rate, the activation energy of CH4 pyrolysis over various catalysts falls within a range of 150–240 kJ/mol. For catalysts with identical compositions, the activity depends on their preparation. Transmission electron microscopy showed that the product was multiwall carbon nanotubes with diameters ranging from 6 to 30 nm. Mathematical equations were proposed to describe the process kinetics. A productivity of 12 g/h is achieved on a laboratory continuous reactor.

Yuferev N.N. , Blinov S.N. , Zavarukhin S.G. , Timofeev A.A. , Rakova E.V. , Rakov E.G.
Synthesis of Multiwall Carbon Nanotubes over Cobalt Catalysts
Theoretical Foundations of Chemical Engineering. 2007. V.41. N5. P.634-638. DOI: 10.1134/S0040579507050314 WOS Scopus РИНЦ ANCAN OpenAlex

Юферев Н.Н. , Блинов С.Н. , Заварухин С.Г. , Тимофеев А.А. , Ракова Е.В. , Раков Э.Г.
Синтез многослойных углеродных нанотрубок на кобальтсодержащих катализаторах
Химическая технология. 2007. Т.8. №4. С.168-171. РИНЦ

Submitted:	Mar 14, 2006
Published print:	Oct 1, 2007

Web of science:	WOS:000250583700030
Scopus:	2-s2.0-35649005933
Elibrary:	14654737
Chemical Abstracts:	2007:1243949
Chemical Abstracts (print):	148:477239
OpenAlex:	W2076562422

DB	Citing
Scopus	1
OpenAlex	1