| 초록 |
In this study, activated carbon fibers (ACF) were prepared by a steam activation method from various precursors (pitch and cellulose-derived fibers) for the adsorption of dimethyl methyl phosphonate (DMMP) gas. DMMP adsorption characteristics were evaluated by breakthrough experiments in the gas phase, and the results of the samples were compared with a commercial ACF (FM10). The specific surface area of the ACF was controlled in the range of 1,000-2,000 m2/g for retaining the mechanical strength. The texture properties of the ACF were analyzed by BET, BJH, and NLDFT with N2/77K adsorption isothermal. The crystallite formation properties were studied by X-ray diffraction analysis. As a result, the specific surface area and pore volume of the ACF were determined to be 1,200-2,000 m2/g and 0.50-0.90 cm3/g, respectively. The DMMP adsorption capacity was determined not only by a specific surface area and micropore volume but also by the mesopore volume of the ACF. |
