Thermal analyses of Ohio bituminous coals
β Scribed by R.J. Rosenvold; J.B. Dubow; K. Rajeshwar
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 705 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0040-6031
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π SIMILAR VOLUMES
Certain high-sulphur-containing, high-volatile bituminous (hvb) coals have been converted into products which are almost completely soluble in chloroform. These products were obtained by a series of reactions involving initial oxidation with 2N nitric acid, depolymerization with boron trifluoride-ph
## Pyrolysisgaschromatography (Py-g.c.) was used tocharacterizequantitativelya seriesof high-to lowvolatile bituminous Permian Australian coals. The levels of n-alkanes, n-alkenes and triterpenoids released by pyrolysis all decrease as a function of increasing rank and thus, the coal samples can b
The rheological behaviour of several bituminous coals has been evaluated by means of a constant torque Gieseler plastometer, utilizing both steadily increasing (3Β°C min-') and isothermal (410Β°C) temperature conditions. The results indicated that under either thermal treatment, the coals investigated
Solvent-induced swelling has been used to characterize the macromolecular nature of bituminous coal. It is necessary to prove the reversibility of coal swelling in order to apply the statistical theory of rubber elasticity. Although such reversibility has been reported, there is little reliable evid