Obtaining the Porous Carbon Materials through High-Speed Heating and Preliminary Chemical Modification of Anthracites
B. N. KUZNETSOV, M. L. SHCHIPKO, N. V. CHESNOKOV, T. P. MILOSHENKO, L. V. SAFONOVA, E. V. VEPRIKOVA, A. M. ZHIZHAEV and N. I. PAVLENKO
Institute of Chemistry and Chemical Technology,
Siberian Branch of the Russian Academy of Sciences,
Ul. K. Marksa 42, Krasnoyarsk 660049 (Russia) E-mail: bnk@icct.ru
Pages: 521-529
Abstract
To develop a porous structure of anthracites of Donetsk and Kuznetsk basins, two various approaches have been applied: high-speed heating of the grinded raw material in a fluidized bed of catalytically active material in the air flow and thermal treatment in a fixed bed under conditions of thermal shock of anthracite that was previously subjected to chemical treatment. The highest BET specific surface (653 m2/g) and the total pore volume (0.319 cm3/g) are attained at high-speed heating of anthracite that was modified by a mixture of nitric and sulphuric acids. The sorbent yield ranges up to 84 % from the mass of initial anthracite. The produced sorbent shows predominantly microporous texture; its sorptive capacity for iodine (71 %) is at a level of commercial active coals, the obtaining of which requires a long-term energy and resource extensive stage of steam-gaseous activation.
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