- PII
- S30345413S0453881125020039-1
- DOI
- 10.7868/S3034541325020039
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume 66 / Issue number 2
- Pages
- 91-103
- Abstract
- The article is devoted to the experimental and theoretical study of complex oscillations during ethylene oxidation on the nickel foil. Mathematical model was based on the 14-stage mechanism of reaction including the stages of oxidation and reduction of the Ni catalyst. An essential condition for the occurrence of an oscillatory behavior of the system was the adsorption of H and CO from the mobile pre-adsorption state. It was shown that for real values of the parameters, the mathematical model can describe both regular and irregular oscillations, as well as the mixed-mode oscillations observed in the experiment. For the first time oscillations with different properties and distinct mechanisms of their occurrence were detected in the same model. It was demonstrated that oscillations occurred as a result of a strong dependence of the reaction rate on the concentration of active sites both due to a variation in the concentration of the surface oxide or the surface carbon.
- Keywords
- окисление этилена никель колебательные режимы математическое моделирование оксид никеля карбонизация никеля
- Date of publication
- 12.03.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 31
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