Chemistry and characterization of coal macerals: overview

The papers in this journal highlight the past research on coal macerals and are aimed at characterizing in some way the various macromolecules that comprise the many kinds of coal macerals. The material in the journal is divided into the following sections: the Maceral Concept, Maceral Characterizations, Development of Petrographic Characterization, Separations, Characterization, Aromacity, Free Radicals in Macerals, Organic Structural Analysis, Direct Characterizations, Reactivity of Macerals in Conversion Processes, and Conclusions. 96 references.