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Fuel science and technology (fundamental science, analysis, instrumentation) 97/01542 Process for hydrodearomatization of hydrocarbon oils using carbon supported metal sulfide catalysts promoted by zinc Sudhakar, C. Eur. Pat. Appl. EP 731, 15h (Cl. ClOG45/50), I I Sep 1996, 97101556 Ultrasound velocity in infinitely dilute tetrahydrofuran and pyrldine solutlons of coal and lignite extracts
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1996, 33, (S
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
Carbonization of oxidized mesophase pitches originating from petroleum and coal tar was examined by thermogravimetry, FT-i.r. spectroscopy, and quantitative analysis of evolved gases. Polymerization and condensation of aromatic rings through loss of aromatic hydrogen are shown to be major chemical r