On the nitrogen containing constituents of coal-tar pitch
β Scribed by Maximilian Zander
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 397 KB
- Volume
- 70
- Category
- Article
- ISSN
- 0016-2361
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π SIMILAR VOLUMES
## Chromatographic behaviour of 64 pure hydrocarbons and nitrogen compounds was verified by gel permeation chromatography. It was found that the elution volumes of almost all nitrogen compounds were higher than the elution volumes of aromatic hydrocarbons. This knowledge was used in the separatio
Ahstraet-A coal tar impregnation pitch has been heated to 420Β°C under shear conditions and cooled. Microstructural investigation of the material showed ellipsoidal mesophase particles produced by shear deformation. On reheating in quiescent conditions, these particles were observed to revert to the