EFECTO DEL RANGO SOBRE LA DEPOLIMERIZACIÓN DE CARBÓN ASISTIDA POR SOLVENTES: REVISIÓN DE LOS MODELOS MOLECULARES

Abstract

Extraction yield values are published from Venezuelan coals in a wide range of maturity levels, with a suite of organic solvents under Soxhlet conditions; these data were collected from assays done since 1985 towards today, in the Organic Geochemistry Lab of the ICT. Middle - and low-rank coals exhibe the best yields, in both conventional and nitrogen -containing Lewis basic solvent. Some published models about coal structure are reviewed, concluding that only those models where the coal components are linked by molecular associations type hydrogen bridges are consi stent with evidences of solvent -assisted depolymerization of coal.