CoZr Nanocomposites in a Ceramic-Metal AlOx(OH)y/Al Matrix with Different Co/Zr Ratio and Its Potential for Syngas Processing Научная публикация
| Журнал |
Dalton Transactions
ISSN: 1477-9226 , E-ISSN: 1477-9234 |
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| Вых. Данные | Год: 2024, Том: 53, Номер: 25, Страницы: 10720-10729 Страниц : 9 DOI: 10.1039/D4DT00960F | ||
| Ключевые слова | Binary alloys; Cobalt; Hydrocarbons; Metal nanoparticles; Metallic matrix composites; Nanocatalysts; Organometallics; Powder metals; Scanning electron microscopy; Synthesis (chemical); Synthesis gas; Zirconium | ||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | FWUR-2024-0033 |
Реферат:
We investigated the possibility of synthesizing Co nanoparticles in CoZrnH/AlOx(OH)y/Al ceramic-metal catalysts and controlling catalytic properties of these nanoparticles in the syngas conversion by changing the Co/Zr ratio. The CoZr nanocomposites were obtained from metal powders by mechanochemical activation in high-energy mill, in an argon atmosphere, followed by treatment in hydrogen at high pressures and room temperature. Ceramic-metal catalysts were prepared by mixing the corresponding CoZrnH powder nanocomposite - (30 wt.%) with powdered aluminum – 70 wt.%, hydrothermal treatment of the mixture and subsequent calcination. The materials were characterized with the set of physicochemical methods: powder X-ray diffraction, scanning electron microscopy, 59Co internal field nuclear magnetic resonance spectroscopy spectroscopy, temperature programmed reduction. Catalytic studies were performed in laboratory fixed-bed flow reactor at 2 MPA and 210-270°C. It is shown that the activity in syngas conversion to C5+ hydrocarbons and selectivity to methane and C2-C4 hydrocarbons - depend on Co/Zr ratio. Thus, with an increase in the zirconium content in the samples, the interaction of metal cobalt with metal zirconium improves in process of mechanical activation and subsequent treatment with hydrogen. Wherein the destruction of agglomerates of crystallites of metallic cobalt in the form of β-Co (Cofcc) occurs and their transformation to α-Co (Cohcp) particles active in the syngas conversion to C5+ hydrocarbons. This can explain the highest specific yield of C5+ hydrocarbons on cermet with lowest Co/Zr ratio.
Библиографическая ссылка:
Dokuchits E.V.
, Tikhov S.F.
, Valeev K.R.
, Kardash T.Y.
, Rogov V.A.
, Salanov A.N.
, Yakovlev I.
, Lapina O.B.
, Minyukova T.
CoZr Nanocomposites in a Ceramic-Metal AlOx(OH)y/Al Matrix with Different Co/Zr Ratio and Its Potential for Syngas Processing
Dalton Transactions. 2024. V.53. N25. P.10720-10729. DOI: 10.1039/D4DT00960F WOS Scopus РИНЦ CAPlus OpenAlex
CoZr Nanocomposites in a Ceramic-Metal AlOx(OH)y/Al Matrix with Different Co/Zr Ratio and Its Potential for Syngas Processing
Dalton Transactions. 2024. V.53. N25. P.10720-10729. DOI: 10.1039/D4DT00960F WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 2 апр. 2024 г. |
| Принята к публикации: | 3 июн. 2024 г. |
| Опубликована online: | 4 июн. 2024 г. |
| Опубликована в печати: | 24 июн. 2024 г. |
Идентификаторы БД:
| Web of science: | WOS:001247624800001 |
| Scopus: | 2-s2.0-85196019556 |
| РИНЦ: | 68460924 |
| Chemical Abstracts: | 2024:1310417 |
| OpenAlex: | W4399348606 |
Цитирование в БД:
Пока нет цитирований