XRD Studies of Evolution of Catalytic Nickel Nanoparticles During Synthesis of Filamentous Carbon from Methane Научная публикация
| Журнал |
Catalysis Letters
ISSN: 1011-372X , E-ISSN: 1572-879X |
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| Вых. Данные | Год: 1999, Том: 62, Номер: 2-4, Страницы: 93-97 Страниц : 5 DOI: 10.1023/A:1019079929435 | ||
| Ключевые слова | Evolution of particles, Filamentous carbon, Methane cracking, Nickel catalysts | ||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | Российский фонд фундаментальных исследований | 98-03-32329 |
Реферат:
The XDR technique was used for studying a series of high‐loaded (90%) nickel catalysts with silica as a textural promoter. These were catalysts for direct cracking of methane at 550°C. A relation between the initial average size of active catalyst particles, carbon yield and average methane conversion was demonstrated. Genesis of these catalysts was studied including oxide precursors, reduced catalysts prior to the reaction, as well as catalysts upon their contacting the reaction medium for various periods of time from 15 min to 2 h. The active catalyst particles were shown to merge or disperse at the outset of the reaction depending on their initial size. Anyway, close average sizes ranging from 30 to 40 nm were observed by the end of the first reaction hour for all the catalytic systems providing the carbon yield of 300–385 g/g Ni. The catalytic system was shown to self‐organize in the course of direct methane cracking, i.e., the catalyst particles transform in response to the reaction conditions. If the size of nickel particles cannot vary, these catalysts are inefficient for the given process.
Библиографическая ссылка:
Ermakova M.A.
, Ermakov D.Y.
, Plyasova L.M.
, Kuvshinov G.G.
XRD Studies of Evolution of Catalytic Nickel Nanoparticles During Synthesis of Filamentous Carbon from Methane
Catalysis Letters. 1999. V.62. N2-4. P.93-97. DOI: 10.1023/A:1019079929435 WOS Scopus РИНЦ CAPlusCA OpenAlex
XRD Studies of Evolution of Catalytic Nickel Nanoparticles During Synthesis of Filamentous Carbon from Methane
Catalysis Letters. 1999. V.62. N2-4. P.93-97. DOI: 10.1023/A:1019079929435 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 9 июн. 1999 г. |
| Принята к публикации: | 2 сент. 1999 г. |
| Опубликована в печати: | 1 окт. 1999 г. |
Идентификаторы БД:
| Web of science: | WOS:000083512000002 |
| Scopus: | 2-s2.0-0033232574 |
| РИНЦ: | 13313583 |
| Chemical Abstracts: | 1999:765442 |
| Chemical Abstracts (print): | 131:342559 |
| OpenAlex: | W247179065 |