Filamentous carbon catalytic deposition of coal-tar pitch fraction on corundum
- Technical University of Ostrava, Ostrava (Czech Republic)
Our work was focused on deposition of volatile hydrocarbons of carbonaceous precursor on corundum wafer, taking advantage of a metallic catalyst incorporated in precursor. Coal tar-pitch, namely a fraction soluble in toluene, served as precursor material for deposition of filamentous material. The toluene-soluble fraction of tar-pitch originally contained metallic particles of iron and nickel. During heat treatment up to 1000{sup o}C, metallic particles accompanied the volatile hydrocarbons conducive to forming a filamentous deposit. The deposit obtained demonstrates a semicrystalline material that has an irregular filamentous structure with an average filament diameter of 30 {mu}m. The presence of catalysts after the deposition process was proved in the deposit but catalysts were not found in the residuum.
- OSTI ID:
- 20885703
- Journal Information:
- Fullerenes, Nanotubes, and Carbon Nanostructures, Vol. 15, Issue 1; ISSN 1536-383X
- Country of Publication:
- United States
- Language:
- English
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