Modeling of Relaxation Oscillations in CO Oxidation on Metallic Catalysts with Consideration of Reconstructive Heterogeneity of the Surface Научная публикация
| Конференция |
XVI International Conference on Chemical Reactors 01-05 дек. 2003 , Berlin |
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| Журнал |
Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212 |
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| Вых. Данные | Год: 2005, Том: 107, Номер: 1-3, Страницы: 191-198 Страниц : 8 DOI: 10.1016/j.cej.2004.12.028 | ||||
| Ключевые слова | Catalytic reaction, CO oxidation, Kinetic model, Oscillations, Surface modification | ||||
| Авторы |
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| Организации |
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Реферат:
This paper is devoted to the development of a low-dimensional kinetic model of CO oxidation on a metallic catalyst surface and theoretical study of arising nonlinear phenomena and relaxation oscillations of the reaction rate. Experimental results of studies on the adsorbed oxygen are presented and its significance in the CO oxidation mechanism on Ir catalyst is shown. We consider the conventional Langmuir–Hinshelwood mechanism of catalytic CO oxidation and take into account the possibility of a metallic surface modification during reaction due to the oxygen penetration into subsurface layers. We suggest that when the adsorbed oxygen concentration exceeds some critical value, a surface modification occurs and the reaction capability of adsorbed oxygen changes, so that the activation energy of the interaction between the adsorbed species sharply increases. Construction of bifurcation curves on the parametric plane (PCO, PO2) permits us to separate areas of CO and O2 partial pressures, for which self-oscillations and/or multiplicity of steady states appear. This paper deals with parametric analysis of a new two-variable kinetic model of CO oxidation on Ir catalyst surface, but the approach developed is rather general and can be applied to studies of different catalytic reactions.
Библиографическая ссылка:
Ivanova E.A.
, Chumakova N.A.
, Chumakov G.A.
, Boronin A.I.
Modeling of Relaxation Oscillations in CO Oxidation on Metallic Catalysts with Consideration of Reconstructive Heterogeneity of the Surface
Chemical Engineering Journal. 2005. V.107. N1-3. P.191-198. DOI: 10.1016/j.cej.2004.12.028 WOS Scopus РИНЦ CAPlusCA OpenAlex
Modeling of Relaxation Oscillations in CO Oxidation on Metallic Catalysts with Consideration of Reconstructive Heterogeneity of the Surface
Chemical Engineering Journal. 2005. V.107. N1-3. P.191-198. DOI: 10.1016/j.cej.2004.12.028 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Опубликована online: | 26 февр. 2005 г. |
| Опубликована в печати: | 15 мар. 2005 г. |
Идентификаторы БД:
| Web of science: | WOS:000228417000025 |
| Scopus: | 2-s2.0-15544363530 |
| РИНЦ: | 13477785 |
| Chemical Abstracts: | 2005:288930 |
| Chemical Abstracts (print): | 142:361589 |
| OpenAlex: | W1979436420 |