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

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
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)

1 Президиум СО РАН 107

Abstract: 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.
Cite: 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 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Jul 26, 2011
Accepted: Mar 19, 2012
Published online: Mar 31, 2012
Published print: Dec 1, 2012
Identifiers:
publication_identifier.wos_identifier_type WOS:000309051500015
publication_identifier.scopus_identifier_type 2-s2.0-84866183454
publication_identifier.rinz_identifier_type 21887537
publication_identifier.accession_number_identifier_type 2012:1358340
publication_identifier.chemical_accession_number_identifier_type 157:559533
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