✦ LIBER ✦
Synthesis of twisted carbon fibres comprised of four intertwined helical strands
✍ Scribed by Monica J. Hanus; Andrew T. Harris
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 290 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0008-6223
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✦ Synopsis
NiSO 4 /Al 2 O 3 was reacted with H 2 and C 2 H 2 in a fluidised-bed reactor at 650 °C to form Ni/Al 2 O 3 and H 2 S. The Ni catalyst became coated with a moderately graphitised (0.6 I D /I G ratio) carbonaceous product containing twisted carbon fibres, 200-500 nm in diameter and up to 27 lm in length. The fibres are comprised of four intertwined helical strands and are a unique carbon morphology. Their growth pattern and surface morphology is attributed to differing carbon extrusion speeds from the faces of the polycrystalline Ni catalyst particles that have been modified by H 2 S.