45. Study on Structual Change during Coalification : Chemical Structure of Ishikari Peat

Abstract

Two kinds of Ishikari Peats (50cm and 500cm in depth) were successively extracted at 100, 150, 200, and 250℃ in ethanol and benzene (1:2). The extracts were classified into four fractions by using silica gel chromatography, and the saturated and aromatic fractions were analyzed by GC and GC-MS. The extraction residues were further hydrogenated over a Ni-Mo/Al_2O_3 catalyst at 350℃, and gases and the toluene soluble portions were analyzed by GC and GC-MS.