Organically Bound Metals in a Solvent-Refined Coal: Metallograms for a Wyoming Subbituminous Coal

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Science  07 Aug 1981:
Vol. 213, Issue 4508, pp. 644-646
DOI: 10.1126/science.213.4508.644


Fractions of a solvent-refined coal that contain organically bound species of magnesium, calcium, titanium, iron, copper, or zinc have been isolated. The fractions represent a wide range of chemical types and molecular size. Their isolation is a step toward speciation.