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The Kinetic Model of Formation of Nanofibrous Carbon from CH4–H2 Mixture over a High-Loaded Nickel Catalyst with Consideration for the Catalyst Deactivation Full article

Journal Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875
Output data Year: 2004, Volume: 272, Number: 1-2, Pages: 219-227 Pages count : 9 DOI: 10.1016/j.apcata.2004.05.044
Tags Deactivation, Filamentous carbon, Kinetic model, Methane decomposition, Nanofibrous carbon, Ni-Al 2O3 catalyst
Authors Zavarukhin Sergei G. 1 , Kuvshinov Gennady G. 2
Affiliations
1 Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
2 Novosibirsk State Technical University, Novosibirsk 630092, Russia

Funding (2)

1 The Ministry of Education and Science of the Russian Federation 203.06.03.001
2 Президиум РАН 4.8.1

Abstract: A mathematical model is suggested for the process of formation of nanofibrous carbon from the mixture of methane and hydrogen over a high-loaded nickel catalyst (90 wt.% Ni–Al2O3) to describe the observed process kinetics involving the catalyst deactivation. The experimental kinetic data obtained at hydrogen volume fraction of 0–40%, 490–590 °C and atmospheric pressure are analyzed to suggest the formula for calculation of the maximal rate of the carbon formation and the equation of the catalyst deactivation. The suggested kinetic model relates to the mechanism when the cleavage of the first hydrogen atom from a methane molecule adsorbed on the catalyst surface is the rate-limiting stage. The model is appropriate for the qualitative and quantitative description of the process under consideration. The calculations in terms of the model are exemplified with synthesis of nanofibrous carbon in an isothermal perfect-mixing reactor at a constant methane consumption. The calculated results agree well with the experimental data.
Cite: Zavarukhin S.G. , Kuvshinov G.G.
The Kinetic Model of Formation of Nanofibrous Carbon from CH4–H2 Mixture over a High-Loaded Nickel Catalyst with Consideration for the Catalyst Deactivation
Applied Catalysis A: General. 2004. V.272. N1-2. P.219-227. DOI: 10.1016/j.apcata.2004.05.044 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: May 28, 2004
Accepted: May 28, 2004
Published online: Jul 17, 2004
Published print: Sep 1, 2004
Identifiers:
Web of science: WOS:000223592700024
Scopus: 2-s2.0-3843123062
Elibrary: 13466146
Chemical Abstracts: 2004:671081
Chemical Abstracts (print): 141:318408
OpenAlex: W2093591975
Citing:
DB Citing
Web of science 84
Scopus 99
Elibrary 95
OpenAlex 97
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