RU2020134623A - Композиции, содержащие кластеры-наночастицы платины с улучшенной термостабильностью - Google Patents
Композиции, содержащие кластеры-наночастицы платины с улучшенной термостабильностью Download PDFInfo
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- RU2020134623A RU2020134623A RU2020134623A RU2020134623A RU2020134623A RU 2020134623 A RU2020134623 A RU 2020134623A RU 2020134623 A RU2020134623 A RU 2020134623A RU 2020134623 A RU2020134623 A RU 2020134623A RU 2020134623 A RU2020134623 A RU 2020134623A
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims 23
- 239000000203 mixture Substances 0.000 title claims 16
- 239000002105 nanoparticle Substances 0.000 title claims 16
- 229910052697 platinum Inorganic materials 0.000 title claims 2
- 239000002245 particle Substances 0.000 claims 16
- 230000032683 aging Effects 0.000 claims 7
- 238000000034 method Methods 0.000 claims 3
- 238000004566 IR spectroscopy Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 229910052809 inorganic oxide Inorganic materials 0.000 claims 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
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- B01D2255/00—Catalysts
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- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
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Claims (15)
1. Композиция, содержащая наночастицы платины (Pt) и неорганический оксид, в которой наночастицы Pt содержат не более 100 атомов Pt, причем наночастицы Pt имеют средний размер частиц от 1 нм до 10 нм со среднеквадратичным отклонением (СКО) не более 1 нм.
2. Композиция по п. 1, в которой наночастицы Pt имеют средний размер частиц от 1 нм до 5 нм.
3. Композиция по п. 1 или 2, в которой наночастицы Pt имеют средний размер частиц не более 15 нм после старения в гидротермических окислительно-восстановительных условиях при 600°C в течение 4 ч, причем средний размер частиц измеряют с помощью трансмиссионного электронного микроскопа (ТЭМ).
4. Композиция по любому одному из предшествующих пунктов, в которой наночастицы Pt имеют средний размер частиц не более 20 нм после старения в гидротермических окислительно-восстановительных условиях при 700°C в течение 4 часов, причем средний размер частиц измеряют с помощью ТЭМ.
5. Композиция по любому одному из предшествующих пунктов, в которой наночастицы Pt имеют средний размер частиц не более 25 нм после старения в гидротермических окислительно-восстановительных условиях при 800°C в течение 4 часов, причем средний размер частиц измеряют с помощью ТЭМ.
6. Композиция по любому одному из предшествующих пунктов, в которой наночастицы Pt содержат от 2 до 100 атомов Pt.
7. Композиция по п. 6, в которой наночастицы Pt содержат от 30 до 100 атомов Pt.
8. Композиция по любому одному из предшествующих пунктов, в которой наночастицы Pt имеют средний размер частиц не более 50 нм после старения при 1000 °C в течение 4 ч, причем средний размер частиц измеряют с помощью ТЭМ.
9. Композиция по любому одному из предшествующих пунктов, в которой наночастицы Pt имеют средний размер частиц не более 30 нм после старения в гидротермических окислительно-восстановительных условиях при 800°C в течение 4 часов, причем средний размер частиц измеряют методом импульса CO.
10. Композиция по любому одному из предшествующих пунктов, в которой наночастицы Pt имеют средний размер частиц не более 60 нм после старения в гидротермических окислительно-восстановительных условиях при 900°C в течение 4 ч, причем средний размер частиц измеряют методом импульса CO.
11. Композиция по любому одному из предшествующих пунктов, в которой наночастицы Pt имеют средний размер частиц не более 80 нм после старения при 1000°C в течение 4 ч, причем средний размер частиц измеряют методом импульса CO.
12. Композиция по любому одному из предшествующих пунктов, в которой наночастицы Pt имеют атомарное разрешение.
13. Композиция по п. 12, в которой наночастицы Pt содержат от 12 до 28 атомов Pt.
14. Композиция по любому одному из предшествующих пунктов, в которой частота колебаний адсорбированной молекулы CO меньше 2080 см-1 при 200°C по результатам инфракрасной (ИК) спектроскопии.
15. Композиция по любому одному из предшествующих пунктов, в которой частота колебаний адсорбированной молекулы CO меньше 2070 см-1 при 200°C по результатам ИК-спектроскопии.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-078117 | 2018-04-16 | ||
| JP2018078117 | 2018-04-16 | ||
| PCT/JP2019/013991 WO2019202949A1 (en) | 2018-04-16 | 2019-03-29 | Compositions comprising platinum nanoparticle clusters with improved thermostability |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| RU2020134623A true RU2020134623A (ru) | 2022-04-21 |
| RU2020134623A3 RU2020134623A3 (ru) | 2022-04-21 |
| RU2778867C2 RU2778867C2 (ru) | 2022-08-26 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3781305A1 (en) | 2021-02-24 |
| US20210094019A1 (en) | 2021-04-01 |
| BR112020020299A2 (pt) | 2021-01-12 |
| CN112118905A (zh) | 2020-12-22 |
| JP2021527555A (ja) | 2021-10-14 |
| WO2019202949A1 (en) | 2019-10-24 |
| RU2020134623A3 (ru) | 2022-04-21 |
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