膨張黒鉛への重油の収着
収着への嵩密度・細孔の影響
1999 年 1999 巻 187 号 p. 96-100
詳細
1999 年 1999 巻 187 号 p. 96-100
It was found that an exfoliated graphite (EG) can sorb a large amount of heavy oilvery quickly. Maximumsorption capacity on EG was shown to be about 80g of heavy oil per 1 g of EG, which is much largr than the packageof absorbents have ever been used. Sorption time of A-grade oil was so quick as to complete within 1 min. On EGsamples compacted to different volumes which had high bulk density, small surface area and total pore volume, lessmaximum sorption capacity was observed; the one having the higher bulk density sorbed the less amount of heavy oil. Time to reach maximum sorption, as well as sorption capacity, for an exfoliated graphite depended on bulk densityand pore.
On observation through SEM and porosimeter, differences of morphology on exfoliated graphite were detected. The sorption capacity and time for sorption of heavy oil into exfoliated graphite were supposed to depend strongly onthe size and shape of pores in exfoliated graphite.
