Characterization of hydrogenolysis products from acidic extracts of low rank coal

摘要: Abstract An appreciable amount of acidic substances was extracted from a Japanese lignite using concentrated sodium hydroxide. Long-chain alkanes were found in their hydrogenated products. Their structure and reactivity for the hydrogenolysis suggested that precursors n-alkanes long-chain alkyl groups bound directly through ketones to aromatic rings, presence which confirmed extracts. In contrast, fatty acids could be excluded as source n-alkanes. Thus, coal liquid is elucidated.