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Genesis of the Active-Component Precursor in the Synthesis of Pt/Al2O3 Catalysts: II. Synthesis of Platinum Hydroxo Complexes on the Alumina Surface As Precursors of the Active Component of Pt/Al2O3 Catalysts Full article

Journal Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210
Output data Year: 2008, Volume: 49, Number: 5, Pages: 729-736 Pages count : 8 DOI: 10.1134/S0023158408050182
Authors Belʹskaya O.B. 1 , Karymova R.K. 1 , Kochubey D.I. 2 , Duplyakin V.K. 1
Affiliations
1 Institute of Hydrocarbon Processing, Siberian Branch, Russian Academy of Sciences, Omsk, 644040 Russia
2 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Science, Novosibirsk, 630090 Russia

Abstract: The thermal hydrolysis of chloroplatinate adsorbed on γ-Al2O3 is a possible approach to the synthesis of surface platinum hydroxo complexes as precursors to the active component of supported platinum catalysts. It is demonstrated by EXAFS and diffuse reflectance spectroscopy that the surface chloro complexes undergo deep hydrolysis under hydrothermal conditions at various processing times and temperatures. The average oxygen coordination number of platinum in these complexes is as large as 4.5. According to gradient elution data obtained using both the competitive replacement of adsorbed complex anions and variation of the charged state of the oxide surface, the resulting hydrolyzed precursor differs from the conventional chloride precursor in the nature of binding to the surface and interacts with alumina via a coordination mechanism.
Cite: Belʹskaya O.B. , Karymova R.K. , Kochubey D.I. , Duplyakin V.K.
Genesis of the Active-Component Precursor in the Synthesis of Pt/Al2O3 Catalysts: II. Synthesis of Platinum Hydroxo Complexes on the Alumina Surface As Precursors of the Active Component of Pt/Al2O3 Catalysts
Kinetics and Catalysis. 2008. V.49. N5. P.729-736. DOI: 10.1134/S0023158408050182 WOS Scopus РИНЦ ANCAN OpenAlex
Original: Бельская О.Б. , Карымова Р.Х. , Кочубей Д.И. , Дуплякин В.К.
Генезис предшественника активного компонента в процессе синтеза катализаторов Pt/Al2O3 II. Синтез гидроксокомплексов платины на поверхности оксида алюминия как предшественников активного компонента катализаторов Pt/Al2O3
Кинетика и катализ. 2008. Т.49. №5. С.764-772. РИНЦ
Original: Бельская О.Б. , Карымова Р.Х. , Кочубей Д.И. , Дуплякин В.К.
Генезис предшественника активного компонента в процессе синтеза катализаторов Pt/Al2O3 I. Трансформация комплекса [PtCl6]2 при взаимодействии раствора платинохлористоводородной кислоты с поверхностью γ-Al2O3
Кинетика и катализ. 2008. Т.49. №5. С.754-763. РИНЦ
Dates:
Published print: Aug 31, 2008
Published online: Sep 29, 2008
Identifiers:
Web of science: WOS:000259698000018
Scopus: 2-s2.0-53249098930
Elibrary: 13579712
Chemical Abstracts: 2008:1175923
Chemical Abstracts (print): 150:24801
OpenAlex: W2017132708
Citing:
DB Citing
Web of science 6
Scopus 6
Elibrary 1
OpenAlex 7
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