Effect of Hydrothermal Treatment on the Composition and Structure of Pt(IV) Hydroxo Complexes As Model Precursors of the Active Component in Pt/Al2O3 Catalysts Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2009, Volume: 50, Number: 6, Pages: 880-885 Pages count : 6 DOI: 10.1134/S0023158409060147 | ||||
| Tags | Hydrothermal Treatment; Temperature Program Reduction; Diffuse Reflectance Spectroscopy; Hydroxo Complex; Platinum Oxide | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Foundation for Basic Research | 06-03-32862 |
Abstract:
The influence of hydrothermal treatment conditions (temperature, duration, acidity of the
medium) on the structural and chemical transformations of the complex H2[Pt(OH)6] was studied. The composition and structure of the resulting compounds were determined by several hysicochemical methods. Thermal analysis coupled with mass spectrometry showed that, as the hydrothermal treatment temperature is raised from 25 to 120 and 150°C, the product composition in terms of empirical formulas changes as follows: PtO2 ⋅ 4H2O PtO2 ⋅ 3.5H2O PtO2 ⋅ 1.5H2O. Xray diffraction and UV and IR spectroscopy demonstrated that the changes in the chemical composition are accompanied by the amorphization of the structure and Pt–O bond strengthening. Xray structure determination using the radial electron density distribution method showed that polynuclear species ~10–15 Å in size with a structure similar to that of orthorhombic PtO2 form in the complexes subjected to “hard” hydrothermal treatment (T ≥ 150°C).
Cite:
Belʹskaya O.B.
, Drozdov V.A.
, Gulyaeva T.I.
, Arbuzov A.B.
, Moroz E.M.
, Zyuzin D.A.
, Paukshtis E.A.
, Larina T.V.
, Duplyakin V.K.
Effect of Hydrothermal Treatment on the Composition and Structure of Pt(IV) Hydroxo Complexes As Model Precursors of the Active Component in Pt/Al2O3 Catalysts
Kinetics and Catalysis. 2009. V.50. N6. P.880-885. DOI: 10.1134/S0023158409060147 WOS Scopus РИНЦ ANCAN OpenAlex
Effect of Hydrothermal Treatment on the Composition and Structure of Pt(IV) Hydroxo Complexes As Model Precursors of the Active Component in Pt/Al2O3 Catalysts
Kinetics and Catalysis. 2009. V.50. N6. P.880-885. DOI: 10.1134/S0023158409060147 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Бельская О.Б.
, Дроздов В.А.
, Гуляева Т.И.
, Арбузов А.Б.
, Мороз Э.М.
, Зюзин Д.А.
, Паукштис Е.А.
, Ларина Т.В.
, Дуплякин В.К.
Изучение гидротермального воздействия на состав и структуру гидроксокомплексов Pt (IV) - модельных предшественников активного компонента в катализаторах Pt/Al2O3
Кинетика и катализ. 2009. Т.50. №6. С.916-921. РИНЦ
Изучение гидротермального воздействия на состав и структуру гидроксокомплексов Pt (IV) - модельных предшественников активного компонента в катализаторах Pt/Al2O3
Кинетика и катализ. 2009. Т.50. №6. С.916-921. РИНЦ
Dates:
| Submitted: | Oct 14, 2008 |
| Published print: | Nov 1, 2009 |
| Published online: | Dec 23, 2009 |
Identifiers:
| Web of science: | WOS:000274742300014 |
| Scopus: | 2-s2.0-75749095576 |
| Elibrary: | 15300759 |
| Chemical Abstracts: | 2010:34204 |
| Chemical Abstracts (print): | 154:143008 |
| OpenAlex: | W2034599582 |