Modeling the complex dynamics of heterogeneous catalytic reactions with fast, intermediate, and slow variables | Sciact - Система учета научной деятельности ИМ СО РАН

Modeling the complex dynamics of heterogeneous catalytic reactions with fast, intermediate, and slow variables Научная публикация

Журнал

Chemical Engineering Journal
ISSN: 1385-8947

Вых. Данные

Год: 2015, Том: 282, Страницы: 11-19 Страниц : 9 DOI: 10.1016/j.cej.2015.03.017

Ключевые слова

Heterogeneous catalysis; Kinetic model; Multi-peak oscillations; Chaos; Dynamical system

Авторы

Chumakov Gennadii A. ^1,3 , Chumakova Nataliya A. ^2,3 , Lashina Elena A. ^2,3

Организации

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

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.

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

Опубликована online:

13 мар. 2015 г.

Web of science:	WOS:000362860100003
Scopus:	2-s2.0-84925954951
OpenAlex:	W2025450612

БД	Цитирований
OpenAlex	11
Scopus	12
Web of science	6