Abstract
Ubari coal was hydrogenated at the initial hydrogen pressure of 100atm and the reaction temperature of 3600°-370° using copper-barium-chromium oxide catalyst.
The products which were soluble in petroleum ether were devided into three parts of basic, acidic and neutral, and the degradation products were fractionated after methy-lation of the acidic and wax elimination and dehydrogenation of the neutral
The aromatic ring structure analysis was made from the determinations of mean molecular formula, molecular refraction, molecular magnetic susceptibility and mole-cular heat of combustion of each fractions. The structure of polymerization unit of coal was discussed based on the above results of the aromatic ring structure analysis.
The results obtained show that the polymerization unit in the degradation products has aromatic ring structure from one to four benzene ring and that the ring condensation type is mainly cata condensed and about 53-63% of all carbon atoms is in these aromatic rings.
