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- W2087956183 abstract "Asphaltenes derived from tar from the flash pyrolysis of Millmerran coal have been separated into acid, base, polyfunctional and neutral fractions by ion-exchange chromatography. Each fraction was studied by high-pressure catalytic hydrogenolysis followed by g.c.-m.s. analysis of the volatile products. The high content of n-alkanes from C9 to C32 in the organic products highlights the unusual maceral composition of Millmerran coal and its high HC ratio. The results show that most of the asphaltenes are made up of small 1 — or 2-ring aromatic units probably linked by methylene chains bonded through intermediate functional groups. In some cases, the asphaltene structures appear to be ‘simpler’ than the corresponding coal-tar resin structures in the maltenes. Because no amphoteric molecules were detected these results support the concept of an acid-base structure for coal-derived asphaltenes." @default.
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- W2087956183 date "1984-11-01" @default.
- W2087956183 modified "2023-10-16" @default.
- W2087956183 title "Constitution of tars from flash pyrolysis of Australian coals: 3. A structural study of Millmerran asphaltene components by hydrogenolysis" @default.
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- W2087956183 doi "https://doi.org/10.1016/0016-2361(84)90229-1" @default.
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