【摘要】 为了探究煤基活性炭孔隙结构对于丁烷吸附-脱附的影响,通过配煤法制得比表面积1 494 m2/g、总孔容1.11 cm3/g、丁烷工作容量39.51wt%(11.70 g/100 mL)的煤基活性炭。通过改变工艺条件得到不同孔分布的活性炭,分析活性炭样品孔隙结构与丁烷吸脱附之间的关系。结果表明:活性炭的总孔容与丁烷工作容量有显著的正相关关系,活性炭孔径在1.83 nm以下的孔不利于丁烷分子的吸附-脱附,而最利于活性炭吸附-脱附丁烷的孔径是1.83～3.70 nm。更多还原

【Abstract】 In order to explore the coal-based activated carbon pore structure of butane adsorption/desorption, a carbon with BET specific surface area up to 1 494 m2/g, total pore volume up to 1.11 cm3/g and butane working activated capacity up to 39.51 wt%(11.70 g/100 mL)was produced. The activated carbons with different pore size distribution were prepared by changing the coal blending ratio,carbonization temperature, activation temperature and burn-off. The results indicate that butane adsorption capacity of the activated carbons is strongly influenced by the pore volume and pore size distribution.To obtain high butane working capacity,it is important to form the pores with diameter between 1.83 to 3.70 nm and high pore volume.更多还原