Structural Changes in a Nickel-Copper Catalyst During Growth of Nitrogen-Containing Carbon Nanofibers by Ethylene/Ammonia Decomposition Full article
| Journal |
Carbon
ISSN: 0008-6223 , E-ISSN: 1873-3891 |
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| Output data | Year: 2010, Volume: 48, Number: 10, Pages: 2792-2801 Pages count : 10 DOI: 10.1016/j.carbon.2010.04.008 | ||||
| Tags | CHEMICAL-VAPOR-DEPOSITION; METHANE DECOMPOSITION; FILAMENTOUS CARBON; NANOTUBES; IRON; MECHANISM; THERMODYNAMICS; NUCLEATION; EVOLUTION; DIFFUSION | ||||
| Authors |
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| Affiliations |
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Funding (5)
| 1 | Russian Foundation for Basic Research | 09-03-93114 |
| 2 | Siberian Branch of the Russian Academy of Sciences | 9 |
| 3 | Siberian Branch of the Russian Academy of Sciences | 31 |
| 4 | Siberian Branch of the Russian Academy of Sciences | 88 |
| 5 | Президиум РАН | 27.58 |
Abstract:
Structural changes in a 65Ni–25Cu–Al2O3 catalyst during the decomposition of a C2H4/NH3 mixture at different stages of nitrogen-containing carbon nanofiber (N-CNF) synthesis were studied by X-ray diffraction (XRD) analysis, X-ray diffraction using anomalous scattering effect and extended X-ray absorption fine structure (EXAFS) spectroscopy. The N-CNF growth over a catalyst particle was supposed to proceed via the formation of an oversaturated solid solution of carbon and nitrogen in a nickel-enriched alloy “NiCuxCyNz”. The latter resulted in an increase of the alloy lattice parameter to abnormally large values а = 3.616–3.706 Å without destruction of its cubic structure. The formation of the “NiCuxCyNz” phase and its presence in the system coincide with the optimum time for the synthesis of N-CNFs with the highest nitrogen concentration and maximum values of specific surface area and total pore volume.
Cite:
Podyacheva O.Y.
, Ismagilov Z.R.
, Shalagina A.E.
, Ushakov V.A.
, Shmakov A.N.
, Tsybulya S.V.
, Kriventsov V.V.
, Ischenko A.V.
Structural Changes in a Nickel-Copper Catalyst During Growth of Nitrogen-Containing Carbon Nanofibers by Ethylene/Ammonia Decomposition
Carbon. 2010. V.48. N10. P.2792-2801. DOI: 10.1016/j.carbon.2010.04.008 WOS Scopus РИНЦ ANCAN OpenAlex
Structural Changes in a Nickel-Copper Catalyst During Growth of Nitrogen-Containing Carbon Nanofibers by Ethylene/Ammonia Decomposition
Carbon. 2010. V.48. N10. P.2792-2801. DOI: 10.1016/j.carbon.2010.04.008 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Nov 30, 2009 |
| Accepted: | Apr 6, 2010 |
| Published online: | Apr 10, 2010 |
| Published print: | Aug 1, 2010 |
Identifiers:
| Web of science: | WOS:000279443900012 |
| Scopus: | 2-s2.0-77955696062 |
| Elibrary: | 15329158 |
| Chemical Abstracts: | 2010:677545 |
| Chemical Abstracts (print): | 153:296958 |
| OpenAlex: | W2044666950 |