离子交换平衡的研究已经有了很长的历史,并且积累了大量的实验数据,但大多只限于研究二元离子交换反应。三元离子交换平衡的研究始于1957年。虽然至今已近卅年了,但得到的数据却并不多,这是因为三元离子交换平衡的实验工作量及难度都比二元离子交换的大得多。然而,实际上遇到的离子交换体系,绝大多数是三元及三元以上的。因此,如何利用二元离子交换平衡数据椎算三元或三元以上的离子交换平衡数据,是当前重要的研究课题。然而,至今还没有一种普遍适用的推算方法。 Ion exchange equilibrium has a long history, and accumulated a large number of experimental data, but mostly limited to the study of binary ion exchange reaction. The study of ternary ion exchange equilibrium began in 1957. Although nearly a year has passed, but the data obtained are not many, this is because the balance of experimental work and three-ion ion exchange more difficult than the binary ion exchange. However, in fact, the majority of ion exchange systems encountered are ternary and ternary. Therefore, how to utilize the binary ion exchange equilibrium data to calculate the ion exchange equilibrium data of ternary or more is an important research topic at present. However, there is no universal method of estimation so far.