Subbituminous and lignite coals contain high levels of oxygen. Extensive structure reactivity studies of Wyodak coal have revealed that carboxy groups and ether linkages are the predominant oxygen functionahties of this coal. Chemical decarboxylation to remove oxygen and upgrade the coal can be achi
Chemical structure of Wyodak coal
โ Scribed by N.C. Deno; Barbara A. Greigger; A.Daniel Jones; Walter G. Rakitsky; Karen Ann Smith; Robert D. Minard
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 140 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0016-2361
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โฆ Synopsis
The chemical structure of a sub-bituminous coal from the Wyodak seam, Wyoming, has been investigated using the technique of per TFA oxidative degradation. The relative amounts of products differ markedly from those from a typical bituminous coal (Illinois No, 6 seam, Monterey mine).
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An adaptation of the transalkylation reaction provides a means for cleaving alkyl substituents off of the aromatic portions of coal as well as extracting aliphatic connecting groups from between aromatic clusters. Using reasonably low concentrations of acid catalysts, the groups are transferred to a