Constitution of tars from the flash pyrolysis of Australian coals: 2. Structural study of Millmerran coal-tar resins by hydrogenolysis |
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Authors: | Andrew J Koplick Peter C Wailes MNeil Galbraith Ivan Vit |
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Affiliation: | CSIRO, Division of Applied Organic Chemistry, GPO Box 4331, Melbourne, Australia, 3001 |
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Abstract: | The structures of the acid, base, polyfunctional and neutral resin fractions of Millmerran coal tar have been studied by high-pressure catalytic hydrogenolysis followed by g.c.-m.s. analysis of the volatile products. n-Alkanes from C9 to C32 constitute 4–24% of the organic products. Each fraction shows a characteristic n-alkane distribution. The alkanes are considered to be an integral part of the coal-tar resin structure. The results show that 40–70% of the coal-tar resin fractions consist of 1- or 2-ring aromatic units substituted or linked by long methylene chains. |
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Keywords: | coal tar pyrolysis structure |
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