The specific surface of coal particles is determined for 370 samples of Kuznetsk Basin coal with a wide range of metamorphic development. Low-temperature adsorption on a Sorbi N.4.1 instrument is employed, at liquid nitrogen temperature and various partial pressures. The specific surface is calculated by the Brunauer–Emmett–Teller (BET) method. In comparison with coal of poor and high metamorphic development, the specific surface is 0.23–3.90 m²/g higher for Zh, KZh, and K coal with vitrinite reflection coefficient 0.93–1.39% and yield of volatiles 20–36%.

中文翻译：

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库兹涅茨克盆地煤比表面积

对 370 个库兹涅茨克盆地煤样的煤颗粒比表面进行了测定，该煤样具有广泛的变质发育。采用 Sorbi N.4.1 仪器在液氮温度和各种分压下进行低温吸附。比表面通过 Brunauer-Emmett-Teller (BET) 方法计算。Zh、KZh、K煤与变质发育差、变质发育差的煤相比，比表面积高0.23~3.90 m ² /g，镜质体反射系数为0.93~1.39%，挥发物产率为20~36%。