| 초록 |
In this study, a series of pelletized activated carbons (AC) were prepared from petroleum-pitch and coal-tar pitch binder by physical activation. The effect of various processes such as activation temperature, activation time, and the ratio of mixing was investigated for optimizing those preparation parameters. Pore characteristics were investigated by N2/77K adsorption isotherms. The hardness of the AC was determined according to ASTM D3802. The butane working capacity (BWC) was determined according to ASTM D5228. From the results, the specific surface area and total pore volume of the AC were determined to be 650–1790 m2/g and 0.27–0.92 cm3/g, respectively. It was also observed that various pore size distributions were found to be dependent on the functions of the activation method and time. The AC exhibit enhanced BWC compared to commercial activated carbon with the high performance of butane working capacity due to its pore structure having a high mesopore ratio. |
