Method for producing encapsulated nanoparticles and carbon nanotubes using catalytic disproportionation of carbon monoxide
US5780101A · kind A · utility
144Cited by
2References
16Claims
0Family size
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Key dates
| Filing date | Feb 17, 1995 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Feb 17, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A method for the production of carbon encapsulated nanoparticles, carbon nanotubes and other closed carbon structures, including contacting a catalyst of a transition metal, or a compound or alloy thereof, with a gas mixture containing carbon monoxide, and an amount of available molecular hydrogen which is insufficient to cause formation of graphite plane edges through capping, at a temperature in the range from 300.degree.-1000.degree. C., to provide closed carbon structures, which are useful in the preparation of thermal composites, reinforcement composites and magnetic particle recording media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.