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- W2151040250 abstract "Catalytically grown fishbone carbon nanofibers (CNF), are prepared by the decomposition of carbon-containing gases (CH4, CO/H2 or C2H4/H2) over a silica-supported nickel catalyst and an unsupported nickel catalyst at 550 ◦ C. It turns out that both the nickel particle size and the nature of the carbon-containing gas significantly affects the CNF growth process. We demonstrate that at the chosen temperature small supported nickel particles need a carbon-containing gas with a relatively low reactivity, like CH4 or CO/H2, to produce CNF. The resulting fishbone CNF have a uniform and small diameter (25 nm). The CNF thus synthesized hold great potential, e.g. as catalyst support material. However, the large unsupported nickel particles only produce CNF using a reactive carbon-containing gas, like C2H4/H2. The CNF thus obtained show a variety of morphologies with a large range of diameters (50–500 nm). The CNF yield is a subtle interplay between the nickel particle size and consequently the exposed crystal planes on the one hand and the reactivity of the carbon-containing gas on the other. © 2002 Elsevier Science B.V. All rights reserved." @default.
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- W2151040250 date "2002-11-01" @default.
- W2151040250 modified "2023-10-06" @default.
- W2151040250 title "Impact of the structure and reactivity of nickel particles on the catalytic growth of carbon nanofibers" @default.
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- W2151040250 doi "https://doi.org/10.1016/s0920-5861(02)00209-2" @default.
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