SYSTEMATIC EVALUATION AND DEVELOPMENT OF ADSORPTION CHROMATOGRAPHIC TECHNIQUES FOR COAL LIQUID ANALYSES

ABSTRACT A review of adsorption chromatography in coal liquids analyses reveals a multitude of closely related methods. This paper the use of distribution coefficient measurement (KD) as a tool for systematically evaluating chromatographic separations. The KQ for model compounds can be used to select adsorbents, optimize elution solvents, and standardize activity. Such KD measurements have been used to design a scheme for separating coal liquids Into five well defined fractions.