Mathematical modelling of complex oscillations during ethylene oxidation over nickel catalyst
- 作者: Slinko M.M.1, Semendyaeva N.L.2,3, Makeev A.G.2, Bychkov V.Y.1
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隶属关系:
- N.N. Semenov Federal Research Center for Chemical Physics RAS
- Moscow State University, Faculty of Computational Mathematics and Cybernetics
- Shenzhen MSU-BIT University
- 期: 卷 66, 编号 2 (2025)
- 页面: 91-103
- 栏目: ARTICLES
- URL: https://consilium.orscience.ru/0453-8811/article/view/689867
- DOI: https://doi.org/10.31857/S0453881125020039
- EDN: https://elibrary.ru/SKMTXB
- ID: 689867
如何引用文章
详细
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 C2H4 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.
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作者简介
M. Slinko
N.N. Semenov Federal Research Center for Chemical Physics RAS
编辑信件的主要联系方式.
Email: slinko@polymer.chph.ras.ru
俄罗斯联邦, Moscow
N. Semendyaeva
Moscow State University, Faculty of Computational Mathematics and Cybernetics; Shenzhen MSU-BIT University
Email: slinko@polymer.chph.ras.ru
Faculty of Computational Mathematics and Cybernetics
俄罗斯联邦, Moscow; International University Park Road, Dayun New Town, Longgang District, Shenzhen, 518172, КитайA. Makeev
Moscow State University, Faculty of Computational Mathematics and Cybernetics
Email: slinko@polymer.chph.ras.ru
俄罗斯联邦, Moscow
V. Bychkov
N.N. Semenov Federal Research Center for Chemical Physics RAS
Email: slinko@polymer.chph.ras.ru
俄罗斯联邦, Moscow
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