Identifiation f Organic Sulfur compounds in Supercritical Extracts from Polish Lignite

摘要

Supercritical fluid extraction (SFE) of a Belchatow lignite (Ro=0.26/100) was carried out with four different solvents, i.e.k, a toluene, 2-propanol, toluene/2-prropanol, and toluene/THF mixtures, at 360 deg.c and 10 MPa in an apparatus with continuous flow of solvent. The type of solvent has an influence not only on the extract yield but also on thee sulfur extractability.