High-resolution transmission electron microscopy study of carbon deposited on the NiO/MgO solid solution catalysts
- State Univ. of New York, Buffalo, NY (United States). Dept. of Chemical Engineering
The carbon deposition due to the CH{sub 4} decomposition at 790 C over NiO/MgO catalysts was investigated by high-resolution transmission electron microscopy. While no deposits could be detected over the catalysts with a NiO content smaller than 9.1 wt%, they were detected over the catalysts with NiO contents of 23 and 50 wt%. The carbon deposits are composed of platelets located at distances of about 0.34 nm, corresponding to the graphitic carbon. Various structures of the deposited carbon were observed: (a) carbon consisting of platelets parallel to the surface of the particle, which covers a catalyst particle, (b) nanotubes composed of platelets parallel to their axis, and (c) carbon vortexes consisting of platelets parallel to their axis.
- OSTI ID:
- 354390
- Journal Information:
- Journal of Catalysis, Vol. 184, Issue 1; Other Information: PBD: 15 May 1999
- Country of Publication:
- United States
- Language:
- English
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