シリカ・アルミナ吸着剤の陽イオン吸着特性
シリカ・アルミナ吸着剤の利用に関する研究(第1報)
1971 年 20 巻 11 号 p. 1459-1461
詳細
1971 年 20 巻 11 号 p. 1459-1461
The adsorption of 18 cations on a silica-alumina adsorbent (containing 2.70% aluminum and treated at 500°C) has been determined by a batch method. The adsorption was found to be larger in the order Ba2+>>Pb2+ >Fe3+>Hg2+>Al3+>Ni2+>Sr2+>Sn2+> Cd2+>Co2+>Zn2+>Mn2+>Ca2+>Cu2+>Ag+> K+>Na+>Mg2+. The capacity of this adsorbent was 5 to 10 times larger than that of silica gel treated at 300°C. The capacity is larger when the ionic charge or the ionic radius is larger and among metal ions in the same periodic group, it is larger as the atomic number increases.
