Ruthenium-Containing Catalysts for Gas Purification from CO, NO, and C3H6: I. Synthesis and Characterization of Platinum-Ruthenium Catalysts

Ruthenium-Containing Catalysts for Gas Purification from CO, NO, and C3H6: I. Synthesis and Characterization of Platinum-Ruthenium Catalysts Full article

Journal

Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210

Output data

Year: 1997, Volume: 38, Number: 5, Pages: 685-691 Pages count : 7

Authors

Popova N.M. ¹ , Antonova N.A. ¹ , Sass A.S. ¹ , Moroz E.M. ² , Ushakov V.A. ² , Kochubey D.I. ² , Degtyarev S.P. ²

Affiliations

1	Institute of Organic Catalysis and Electrochemistry, National Academy of Sciences of Kazakhstan, Almaty, 480100 Kazakhstan
2	Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, Novosibirsk 630090, Russia

The results of physical and chemical studies of alumina-supported platinum-ruthenium-cerium catalysts are reported. The effect of support, binder, cerium additive, and preparative procedure on the formation of ruthenium-containing catalysts was analyzed by RAD, XRD, EXAFS, XPS, TPR, and X-ray fluorescence. The reasons for the catalyst stabilization upon its exposure to oxygen and high temperatures were conjectured. The reduced platinum-ruthenium-cerium catalyst is the mixture of CeO2, CeAlO3, and unconnected clusters of platinum and ruthenium, rather than an alloy. Ruthenium readily transforms to RuO2 and reduces to RuO even at 433-443 K. This property stipulates its role in the activation and reduction of NO to Nz. Platinum and ruthenium are stabilized in the oxidizing medium by the formation of connected PtOx and RuO2 clusters and a perovskite-like surface moiety involving cerium and, probably, ruthenium.

Popova N.M. , Antonova N.A. , Sass A.S. , Moroz E.M. , Ushakov V.A. , Kochubey D.I. , Degtyarev S.P.
Ruthenium-Containing Catalysts for Gas Purification from CO, NO, and C3H6: I. Synthesis and Characterization of Platinum-Ruthenium Catalysts
Kinetics and Catalysis. 1997. V.38. N5. P.685-691. WOS Scopus РИНЦ ANCAN

Попова Н.М. , Антонова Н.А. , Сасс А.С. , Мороз Э.М. , Ушаков В.А. , Кочубей Д.И. , Дегтярев С.Г.
Рутенийсодержащие катализаторы очистки газов от СО, NO и C3H6. I. Синтез и физико-химические исследования платинорутениевых катализаторов
Кинетика и катализ. 1997. Т.38. №5. С.749-756. РИНЦ publication_identifier_short.rz_viniti_identifier_type

Submitted:	Jul 24, 1995
Published print:	Sep 1, 1997

Web of science:	WOS:A1997YD16800016
Scopus:	2-s2.0-0642301367
Elibrary:	13263134
Chemical Abstracts:	1997:705197
Chemical Abstracts (print):	128:6718

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