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Abstr anthracene chars heat treated between 500 and 1200Β°C is developped and applied to d.c. electrical conductivity, paramagnetic susceptibility and apparent density. An inhomogeneous process for the carbonization is proposed, in agreement with recent results on the structure of these chars. acts 3
The pore structure of the pyrolysis residues of poiy-2.~dimethylphenyleneoxide (PPO) and oxidized PPO were studied by adsorption measurements. The Dubinin method with different gases as adsorbents was used for determination of the micropore volume. In all cases slit-shaped micropores were found, Pre
## Co-carbonizations were carried out to study the possible utilization of petroleum cokes of different qualities in the production of metallurgical cokes. The use of blends of a high volatile coking coal with petroleum cokes (high, medium and low volatile content) was studied. It was found that w