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Modeling the complex dynamics of heterogeneous catalytic reactions with fast, intermediate, and slow variables Full article

Journal Chemical Engineering Journal
ISSN: 1385-8947
Output data Year: 2015, Volume: 282, Pages: 11-19 Pages count : 9 DOI: 10.1016/j.cej.2015.03.017
Tags Heterogeneous catalysis; Kinetic model; Multi-peak oscillations; Chaos; Dynamical system
Authors Chumakov Gennadii A. 1,3 , Chumakova Nataliya A. 2,3 , Lashina Elena A. 2,3
Affiliations
1 Sobolev Institute of Mathematics, pr. Akad. Koptyuga 4, Novosibirsk 630090, Russia
2 Boreskov Institute of Catalysis, pr. Akad. Lavrent’eva 5, Novosibirsk 630090, Russia
3 Novosibirsk State University, ul. Pirogova 2, Novosibirsk 630090, Russia

Abstract: The paper presents some results of studying different types of the multi-peak oscillations and the chaotic behavior in the low-dimensional dynamical systems with a hierarchy of characteristic times. Under study is a kinetic model which consists of three nonlinear ordinary differential equations with fast, intermediate, and slow variables and illustrates that the influence of adsorbed species on the rate of catalytic reaction may lead to multi-peak oscillations and even to chaotic behavior under isothermal conditions. Such a situation occurs, for example, when the surface heterogeneity of the catalytic sites causes the activation energy of some reaction stage (or stages) to change with the surface coverage by one of the intermediate substances. Numerical simulations are used to demonstrate different types of the multi-peak oscillations and chaos in the kinetic model of hydrogen oxidation on nickel catalyst.
Cite: Chumakov G.A. , Chumakova N.A. , Lashina E.A.
Modeling the complex dynamics of heterogeneous catalytic reactions with fast, intermediate, and slow variables
Chemical Engineering Journal. 2015. V.282. P.11-19. DOI: 10.1016/j.cej.2015.03.017 WOS Scopus OpenAlex
Dates:
Published online: Mar 13, 2015
Identifiers:
Web of science: WOS:000362860100003
Scopus: 2-s2.0-84925954951
OpenAlex: W2025450612
Citing:
DB Citing
OpenAlex 11
Scopus 12
Web of science 6
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