Hydrogenolysis products of pyridine extract of a Japanese lignite |
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Authors: | Kiyoshi Mashimo Kozo Kiya Shinichi Sato Hideki Tsuchiya Tohru Wainai |
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Affiliation: | Department of Industrial Chemistry, College of Science and Technology. Nihon University, 1—8 Kanda-Surugadai, Chiyoda-ku, Tokyo 101, Japan |
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Abstract: | Petroleum ether insoluble fractions of a pyridine extract of a Japanese lignite were pyrolysed with tetralin. The chain length of alkyl groups bonded to aromatic rings and the average chemical structure of aromatic compounds in the lignite were obtained from analyses of hydrogenolysis products. Gas Chromatographic analyses of fractions eluted by cyclohexane showed the presence of C15 to C34 straight-chain alkanes. The chemical structures of the other fractions were analysed quantitatively by a combination of 13C and 1H n.m.r. The unit structure of petroleum ether insoluble fractions in the lignite consists of one to three aromatic rings with straight-chain alkyl groups, some of which are about 25–30 carbon atoms long. |
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Keywords: | coal hydrogenolysis pyridine |
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