Status of coal research: Solvent extraction
- Eastern Illinois Univ., Charleston, IL (United States)
The early history of Solvent extraction in coal research has been reviewed by Van Krevelen. From the beginning, solvent extraction has been used to isolate and characterize both soluble and insoluble coal fractions. The recent studies covered in this report fall into four broad areas: (1) Improvement in extraction yields or selectivity; (2) Correlation of solvent swelling and extraction behavior to structural models for the insoluble organic portion of coal; (3) Analyses of extracts to identify and perhaps quantify organic compounds in the raw coal, and (4) Use of solvent extraction to predict or influence coal behavior in some other process such as liquefaction. To cover this active area in a brief Preprint, references were chosen to illustrate both the current status of the field and cite related studies. The availability of the pristine Argonne Premium Coal Samples has led to a significant improvement in the reproducibility of solvent extraction as an analytical tool. In 1984, Triolo and Child cautioned that solvent extraction may be an inherently unreproducible process. Based on studies of how weathering affects solvent extraction, that was a fair statement at the time. With the improvements and standardization of solvent extraction practices developed since then, it is now possible to obtain reproducible and reliable information from the solvent extraction of coal.
- OSTI ID:
- 254678
- Report Number(s):
- CONF-940813-; TRN: 96:003482-0014
- Resource Relation:
- Conference: 208. American Chemical Society (ACS) national meeting, Washington, DC (United States), 21-26 Aug 1994; Other Information: PBD: 1994; Related Information: Is Part Of 207th ACS national meeting. Volume 39, Nos. 1, 2, 3 and 4; PB: 1304 p.
- Country of Publication:
- United States
- Language:
- English
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