Mechanochemical Synthesis, Structure, and Catalytic Activity of Ni-Cu, Ni-Fe, and Ni-Mo Alloys in the Preparation OF Carbon Nanofibers During the Decomposition of Chlorohydrocarbons
| Autor: | Yu. I. Bauman, A. P. Koskin, Ilya V. Mishakov, Yu. V. Shubin, N. V. Kutaev, A. N. Serkova, A. A. Vedyagin |
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| Rok vydání: | 2020 |
| Předmět: |
Yield (engineering)
Materials science Solid-state physics Carbon nanofiber Alloy engineering.material 010402 general chemistry 010403 inorganic & nuclear chemistry 01 natural sciences Decomposition 0104 chemical sciences Catalysis Inorganic Chemistry Metal Chemical engineering visual_art Phase composition Materials Chemistry visual_art.visual_art_medium engineering Physical and Theoretical Chemistry |
| Zdroj: | Journal of Structural Chemistry. 61:769-779 |
| ISSN: | 1573-8779 0022-4766 |
| DOI: | 10.1134/s0022476620050133 |
| Popis: | A series of Ni-M (M = Cu, Fe, Mo)-based alloys is synthesized using mechanochemical alloying of metal powders. The phase composition and structure of Ni-M samples are analyzed by powder X-ray diffraction. The catalytic activity of Ni-M B is studied in the synthesis of carbon nanofibers (CNFs) by decomposing a C2H4Cl2/H2/Ar mixture at 600 °C. It is shown that as a result of the interaction of alloys with the reaction medium, their rapid disintegration occurs with the formation of active particles catalyzing the growth of CNFs. The highest yield (22.2 g(CNF)/g(Ni)) is obtained for Ni-Mo alloy (in 2 h). The structural and morphological features of carbon materials are investigated. SEM and TEM data indicate the formation of carbon fibers with a pronounced segmented structure. The specific surface of the carbon material is 250–400 m2/g. |
| Databáze: | OpenAIRE |
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