Preparation of Ni–Cu Catalyst for Carbon Nanofiber Production by the Mechanochemical Route Full article
| Conference |
6th International Conference on Catalysis and Chemical Engineering 22-26 Feb 2022 , San Francisco |
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| Journal |
Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028 |
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| Output data | Year: 2023, Volume: 66, Pages: 393–404 Pages count : 12 DOI: 10.1007/s11244-022-01739-7 | ||||||
| Tags | nickel-copper solid solution, mechanochemical alloying, ethylene, carbon erosion, carbon nanofbers | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0010 (АААА-А21-121011390054-1) |
Abstract:
The development of efective catalytic systems for the synthesis of carbon nanomaterials by catalytic pyrolysis is a relevant direction for modern science. In this work, the peculiarities of the microdispersed alloy Ni0.89Cu0.11 synthesis by mechanochemical alloying of metal powders in a planetary mill were investigated. The evolution of morphology and phase composition of Ni–Cu composite depending on the diameter of the milling balls and the activation time was studied using X-ray difraction and particle size analyses, and scanning electron microscopy. The conditions corresponding to the formation of a single-phase Ni–Cu solid solution were determined and a scheme for the appearance of microdispersed alloy particles during the activation process was proposed. The prepared samples of the Ni–Cu composite were tested as catalyst precursors in the ethylene decomposition at 550 °C accompanied with the formation of carbon flaments. An extreme character of the carbon yield dependence on the activation time was found. The maximum carbon yield of 68–78 g/gcat after 15 min of reaction was achieved on the sample activated for 5–7 min and possessing slab morphology. The complete disintegration of the microdispersed Ni–Cu alloy was observed after ~1 min of a contact with the reaction medium. The resulting active particles were shown to catalyze the growth of carbon flaments. According to EDX data, the average content of copper in the composition of the active particles was estimated to be equal to its initial concentration in the alloy (~ 12 at.%).
Cite:
Afonnikova S.D.
, Mishakov I.V.
, Bauman Y.I.
, Trenikhin M.V.
, Shubin Y.V.
, Serkova A.N.
, Vedyagin A.A.
Preparation of Ni–Cu Catalyst for Carbon Nanofiber Production by the Mechanochemical Route
Topics in Catalysis. 2023. V.66. P.393–404. DOI: 10.1007/s11244-022-01739-7 WOS Scopus РИНЦ OpenAlex
Preparation of Ni–Cu Catalyst for Carbon Nanofiber Production by the Mechanochemical Route
Topics in Catalysis. 2023. V.66. P.393–404. DOI: 10.1007/s11244-022-01739-7 WOS Scopus РИНЦ OpenAlex
Dates:
| Accepted: | Oct 26, 2022 |
| Published online: | Nov 15, 2022 |
| Published print: | Mar 23, 2023 |
Identifiers:
| Web of science: | WOS:000884146200001 |
| Scopus: | 2-s2.0-85141992001 |
| Elibrary: | 53804754 |
| OpenAlex: | W4309635289 |