Journal
CHEMICAL ENGINEERING SCIENCE
Volume 83, Issue -, Pages 149-158Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2012.03.020
Keywords
Catalysis; CO oxidation; Self-oscillations; Experiment; Mathematical modeling; Feedback mechanism
Categories
Funding
- Siberian Branch of the Russian Academy of Sciences [107]
Ask authors/readers for more resources
The paper presents the experimental study and mathematical modeling of self-sustained oscillations in the reaction of CO oxidation on PdO/Al2O3 catalysts. In experiments we observe the complicated multi-peak oscillatory behavior of CO conversion under isothermal conditions. At these, the palladium surface is composed of a mixture of the metallic and oxide phases. We develop some new mathematical models describing the interaction of reagents with the Pd and PdO surfaces and taking into account the influence of the reaction medium on the catalyst activity. The models qualitatively describe the relaxation and multi-peak oscillations of the CO conversion. The redox process of Pd-PdO transition observed in the experiment causes the relaxation oscillations, while the mixed-mode oscillations in the model are observed due to coupling between the deep oxidation of palladium and the surface modification by oxygen. (C) 2012 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available