CAJ | 학술논문

以神东煤为原料,KOH为活化剂制备高比表面积活性炭,分别考察碱煤比、活化温度和活化时间对活性炭孔结构的影响,并用于CH_4和H_2的吸附与分离.结果发现,制得活性炭的比表面积和孔容随碱煤比和活化时间的增加分别呈增加和先增加后减小的趋势,但比表面积受活化温度影响不大,孔容随活化温度升高而增加;适合于CH_4和H_2分离的活性炭的最佳制备条件为:碱煤比为5,活化温度800 ℃,活化时间为90 min.
이신동매위원료,KOH위활화제제비고비표면적활성탄,분별고찰감매비、활화온도화활화시간대활성탄공결구적영향,병용우CH_4화H_2적흡부여분리.결과발현,제득활성탄적비표면적화공용수감매비화활화시간적증가분별정증가화선증가후감소적추세,단비표면적수활화온도영향불대,공용수활화온도승고이증가;괄합우CH_4화H_2분리적활성탄적최가제비조건위:감매비위5,활화온도800 ℃,활화시간위90 min.
CT Shendong coal was activated by KOH for preparation of high surface area activated carbons as adsorbent to separate CH_4 and H_2. The effects of different preparation variables, including the KOH/coal ratio, activation temperature and time, on the final porous texture of activated carbon were discussed. The results showed that the surface area and pore volume of prepared activated carbon increase with the increase of KOH/coal. The surface area and pore vo-lume reach maximum with activation time and then decrease. The activation temperature has little effect on surface area and the pore volume increases with activation temperature. The optimum preparation conditions of activated carbon for separation CH_4 and H_2 are KOH/coal ratio of 5, activation temperature of 800 ℃ and activation time of 90 min.