Low temperature electrochemical preparation of carbon with a high surface area from polytetrafluoroethylene
✍ Scribed by J. Jansta; F.P. Dousek; V. Patzelová
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 451 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0008-6223
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✦ Synopsis
A mixture of carbon and lithium fluoride dispersed on a molecular scale was prepared at a temperature of 100°C by corrosion of polytetrafluoroethylene using lithium amalgam. The corrosion mechanism was found to be electrochemical. Very highly dispersed amorphous carbon having a specific surface area of 3.511.0 x IO' m'/g could be isolated from the mixture by melting the lithium fluoride particles or dissolving them in water. The surface of the carbon particles is hydrophilic. Adsorption of Ar on them obeys an isotherm of the Langmuir type. No capillary condensation occurred during the adsorption.
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