Supercritical extraction is expected as a promising separation process of coal liquids because we should purify them to use coal derived components as the resources of speciality chemicals. The solubility data of coal derived components in supercritical fluid are essentially required as the fundamental data to study the feasibility of separation process. The data source published in the literature is compiled here. Further, the correlation methods of the solubility are reviewed. It is emphasized that the entrainer effect is very important to enhance the solubility and the selectivity.
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