4.溶剤抽出による石炭のフラクショネーション

抄録

We have presented a new coal solvent extraction method that realizes not only demineralization of coal but also coal fractionation in terms of molecular mass. It was found that five extraction steps could fractionate the coal into 8 fractions. Ultimate analysis and molecular mass measurement showed that the fractions obtained at lower temperature consisted of smaller molecular mass compounds which were existent in the parent coal and have larger atomic H/C ratio. H-NMR analysis indicated that the chemical structures of the extracts obtained below 300℃ were rather close.