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以 2 乙基己基膦酸单 α 乙基己酯为载体 ,考察了料液相pH、膜相载体浓度、反萃相盐酸浓度及温度对液膜迁移镧离子的影响 .获得了不同温度下的表观反应速率常数 .萃取和反萃取反应的表观活化能分别为 15 .2kJ·mol- 1 和 2 6 .6kJ·mol- 1 .结果表明 ,镧离子的跨膜迁移过程可以两个串联的准一级不可逆过程进行描述
The influence of liquid phase pH, carrier phase concentration, stripping hydrochloric acid concentration and temperature on the migration of lanthanum ions in liquid film was investigated with 2-ethylhexylphosphonic acid mono-α-ethylhexyl ester as carrier. Apparent reaction rate constant.The apparent activation energy of extraction and stripping reaction were 15.2kJ · mol-1 and 26.6kJ · mol-1, respectively.The results showed that the transmembrane migration of lanthanum ions can be carried out in two series Quasi-level irreversible process described