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The samples of granulated (2–3 mm) active carbon were prepared by the alkaline activation of a mixture of soot and oil pitch (50/50) followed by washing and drying (the first stage). At the second stage, the prepared granules were steam activated at temperatures of 700–750°C. As a result, samples with a carbon loss of 10–56% were obtained; in this case, the specific surface area increased from 423...
Mesoporous carbon adsorbent may be produced from carbon black and petroleum pitch by high-temperature roasting (at 1100°C) and subsequent steam activation. The samples obtained are compared with samples roasted at 700°C, with losses of 5–70 wt %. It is found that raising the roasting temperature increases the mesopore surface by a factor of 1.5–2.5 (to 200–300 m2/g) and reduces the micropore volume...
The porous structure of cylindrical and ring-shaped carbonaceous material was developed by partial steam gasification. Micropore and mesopore structures of active carbons with various burn-offs were evaluated with nitrogen adsorption/desorption isotherms. The parameters of the Dubinin-Radushkevich equation were calculated, as were surface mesopores using Dollimore and Heal method and the micropore...
Wyselekcjonowano węgiel kamienny z KWK Marcel typu 34.1 jako najlepiej nadający się do wytworzenia adsorbentów do magazynowania metanu. Dokonano trzech mieleń wyselekcjonowanego węgla i zbadano ich rozkład uziarnienia. Przez porównanie zmierzonych rozkładów wielkości ziaren z obliczonym rozkładem idealnym (Fullera) wybrano sposób mielenia zapewniający maksymalne upakowanie frakcji węglowej. Badania...
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