Nanoporosity development in the thermal-shock KOH activation of brown coal

作者：Kucherenko Vladimir A; Shendrik Tetyana G; Tamarkina Yuliya V^*; Mysyk Roman D

来源：Carbon, 2010, 48(15): 4556-4558.

DOI：10.1016/j.carbon.2010.07.027

Thermal-shock KOH activation of brown coal (800 degrees C, KOH/coal ratio 1 g/g) was shown to produce nanoporous activated carbon with more developed surface area than thermally-programmed heating (S(BET) up to 1700 vs 1000 m(2)/g). Increasing the KOH/coal ratio (up to 1 g/g) in the activated mixture increases the total pore volume (0.14-1.0 cm(3)/g), the micropore volume (0.03-0.71 cm(3)/g), and also the volume of subnanometer pores (0.01-0.40 cm(3)/g). Thermal shock produces nanoporosity at lower KOH/coal ratios (0.5-1.0 g/g) than respective low-rate heating KOH activation.

• 出版日期2010-12