Formation of Catalytically Active Nanoparticles under Thermolysis of Silver Chloroplatinate(II) and Chloroplatinate(IV) Научная публикация
| Журнал |
Molecules
ISSN: 1420-3049 |
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| Вых. Данные | Год: 2022, Том: 27, Номер: 4, Номер статьи : 1173, Страниц : 15 DOI: 10.3390/molecules27041173 | ||||||
| Ключевые слова | thermolysis; silver; platinum; solid solution of metals; CO PROX | ||||||
| Авторы |
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| Организации |
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Информация о финансировании (2)
| 1 | Министерство науки и высшего образования Российской Федерации | 121031700315–2 |
| 2 | Российский научный фонд | 21-73-20203 |
Реферат:
The thermal behaviour of Ag2[PtCl4] and Ag2[PtCl6] complex salts in inert and reducing
atmospheres has been studied. The thermolysis of compounds in a helium atmosphere is shown
to occur in two stages. At the first stage, the complexes decompose in the temperature range of
350–500 C with the formation of platinum and silver chloride and the release of chlorine gas.
At the second stage, silver chloride is sublimated in the temperature range of 700–900 C, while
metallic platinum remains in the solid phase. In contrast to the thermolysis of Ag2[PtCl6], the
thermal decomposition of Ag2[PtCl4] at 350 C is accompanied by significant heat release, which
is associated with disproportionation of the initial salt to Ag2[PtCl6], silver chloride, and platinum
metal. It is confirmed by DSC measurements, DFT calculations of a suggested reaction, and XRD. The thermolysis of Ag2[PtCl4] and Ag2[PtCl6] compounds is shown to occur in a hydrogen atmosphere in two poorly separable steps. The compounds are decomposed within 170–350 C, and silver and platinum are reduced to a metallic state, while a metastable single-phase solid solution of Ag0.67Pt0.33 is formed. The catalytic activity of the resulting nanoalloy Ag0.67Pt0.33 is studied in the reaction of CO total (TOX) and preferential (PROX) oxidation. Ag0.67Pt0.33 enhanced Pt nano-powder activity in CO TOX, but was not selective in CO PROX.
Библиографическая ссылка:
Filatov E.
, Smirnov P.
, Potemkin D.
, Pishchur D.
, Kryuchkova N.
, Plyusnin P.
, Korenev S.
Formation of Catalytically Active Nanoparticles under Thermolysis of Silver Chloroplatinate(II) and Chloroplatinate(IV)
Molecules. 2022. V.27. N4. 1173 :1-15. DOI: 10.3390/molecules27041173 WOS Scopus РИНЦ OpenAlex
Formation of Catalytically Active Nanoparticles under Thermolysis of Silver Chloroplatinate(II) and Chloroplatinate(IV)
Molecules. 2022. V.27. N4. 1173 :1-15. DOI: 10.3390/molecules27041173 WOS Scopus РИНЦ OpenAlex
Даты:
| Поступила в редакцию: | 24 дек. 2021 г. |
| Принята к публикации: | 8 февр. 2022 г. |
| Опубликована в печати: | 9 февр. 2022 г. |
| Опубликована online: | 9 февр. 2022 г. |
Идентификаторы БД:
| Web of science: | WOS:000764302000001 |
| Scopus: | 2-s2.0-85124599183 |
| РИНЦ: | 48150895 |
| OpenAlex: | W4221028940 |