Self-Sustained Oscillations in CO Oxidation Reaction on PdO/Al2O3 Catalyst | Sciact - CRIS-system of Boreskov Institute of Catalysis

Self-Sustained Oscillations in CO Oxidation Reaction on PdO/Al2O3 Catalyst Full article

Journal

Chemical Engineering Science
ISSN: 0009-2509 , E-ISSN: 1873-4405

Output data

Year: 2012, Volume: 83, Pages: 149-158 Pages count : 9 DOI: 10.1016/j.ces.2012.03.020

Tags

Catalysis, CO oxidation, Experiment, Feedback mechanism, Mathematical modeling, Self-oscillations

Authors

Lashina E.A. ¹ , Slavinskaya E.M. ¹ , Chumakova N.A. ^1,3 , Stonkus O.A. ^1,3 , Gulyaev R.V. ¹ , Stadnichenko A.I. ^1,3 , Chumakov G.A. ^2,3 , Boronin A.I. ^1,3 , Demidenko G.V. ^2,3

Affiliations

1	Boreskov Institute of Catalysis SB RAS, pr. Akad. Lavrent’eva 5, Novosibirsk 630090, Russia
2	Sobolev Institute of Mathematics SB RAS, pr. Akad. Koptyuga 4, Novosibirsk 630090, Russia
3	Novosibirsk State University, ul. Pirogova 2, Novosibirsk 630090, Russia

Funding (1)

Siberian Branch of the Russian Academy of Sciences

107

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.

Lashina E.A. , Slavinskaya E.M. , Chumakova N.A. , Stonkus O.A. , Gulyaev R.V. , Stadnichenko A.I. , Chumakov G.A. , Boronin A.I. , Demidenko G.V.
Self-Sustained Oscillations in CO Oxidation Reaction on PdO/Al2O3 Catalyst
Chemical Engineering Science. 2012. V.83. P.149-158. DOI: 10.1016/j.ces.2012.03.020 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Jul 26, 2011
Accepted:	Mar 19, 2012
Published online:	Mar 31, 2012
Published print:	Dec 1, 2012

Web of science:	WOS:000309051500015
Scopus:	2-s2.0-84866183454
Elibrary:	21887537
Chemical Abstracts:	2012:1358340
Chemical Abstracts (print):	157:559533
OpenAlex:	W2076649804

DB	Citing
Web of science	25
Scopus	27
Elibrary	29
OpenAlex	28