Nickel Catalysts Supported on Carbon Nanofibers: Structure and Activity in Methane Decomposition Full article
Journal |
Catalysis Letters
ISSN: 1011-372X , E-ISSN: 1572-879X |
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Output data | Year: 1997, Volume: 47, Number: 1, Pages: 35-42 Pages count : 8 DOI: 10.1023/A:1019003609909 | ||
Tags | Carbon, EXAFS, Methane, Nickel carbide, Nickel catalyst | ||
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Abstract:
Structures of Ni catalysts supported on filamentous carbon (CFC) produced by methane decomposition over coprecipitated Ni and Ni-Cu/alumina catalysts were studied by EXAFS and TEM. Thermal pre-treatment in N2 at 350°C of samples impregnated by nickel nitrate precursor was found to produce either NiO or nickel carbide, Ni3C, phase. This was explained by different reducing properties of the carbon nanofibers which depend on the surface structure. High stability of the Ni/C catalysts in methane decomposition reaction at 550°C was found with those prepared from only nickel chloride precursor, due to the formation of large (30-70 nm) Ni particles further leading to new carbon filaments growth. Data implies a common mechanism of the filamentous carbon deposition in all Ni-based catalysts, independent of the support (silica, alumina, carbon) being used. However, accumulation of filamentous carbon is strongly influenced by morphology and texture of the support.
Cite:
Shaikhutdinov S.K.
, Avdeeva L.B.
, Novgorodov B.N.
, Zaikovskii V.I.
, Kochubey D.I.
Nickel Catalysts Supported on Carbon Nanofibers: Structure and Activity in Methane Decomposition
Catalysis Letters. 1997. V.47. N1. P.35-42. DOI: 10.1023/A:1019003609909 WOS Scopus РИНЦ
Nickel Catalysts Supported on Carbon Nanofibers: Structure and Activity in Methane Decomposition
Catalysis Letters. 1997. V.47. N1. P.35-42. DOI: 10.1023/A:1019003609909 WOS Scopus РИНЦ
Dates:
Submitted: | Mar 21, 1997 |
Accepted: | May 20, 1997 |
Published print: | Aug 1, 1997 |
Identifiers:
Web of science | WOS:A1997XV65400006 |
Scopus | 2-s2.0-0001965526 |
Elibrary | 13268697 |
Chemical Abstracts | 1997:594126 |
Chemical Abstracts (print) | 127:265004 |
OpenAlex | W120724099 |