Abstract
The previous project dissected the heats of interactions of a series of coals into components that represented Bronsted acidity, hydrogen-bonding acidity and dispersion force interactions through comparison with the simple prototype solid acids: sulfonic acid resin, silica, and graphitized carbon black respectively. The present grant has emphasized the interaction of basic components in the coal with strong Bronsted acids and boron trichloride, a very strong Lewis acid, with a brief examination of the interactions of the coals with phenols as weaker hydrogen-bonding acids. We have also compared several coals with liquids derived from them at Wilsonville and Exxon. Finally, we have examined the effect of citric acid washing on several coals.
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