Alternative procedure for the analysis of coal-derived materials for oil, asphaltene and pre-asphaltene content
✍ Scribed by Albert A. Awadalla; Colin J. Rix; Ian M. Shaw; Brian E. Smith
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 382 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0016-2361
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✦ Synopsis
An alternative method for the analysis of coal-derived materials for oil, asphaltene and preasphaltene content, is described. The test sample is coated as a thin layer on the fine mesh glass beads and the relevant fractions are extracted sequentially with hexane, toluene and pyridine. The efficiencies of the extractions are satisfactory. Solvents are removed subsequently from the extracts by evaporation at low pressure, and the residues are weighed. The method has been tested on a range of samples, and its sensitivity to sample loading and to c@solvent effects has been investigated. (