X-ray analysis of coals treated with organic liquids. Detailed study of the adduct formed between pyridine molecules and Beulah Zap lignite

SB DuBose
David L. Wertz, University of Southern Mississippi

Abstract

Wide-angle X-ray scattering methods indicate that, almost instantly, pyridine molecules penetrate between the nearest layers of the poly-cyclic units of Beulah Zap lignite to form a quasi-stable adduct. The lifetime of this adduct is several hours, and even after most of the pyridine has evaporated from the BZ/PYR gel, the expanded interlayer distance characteristic of the gel is retained.