Different Types and Their Characteristics:
The various synthetic inorganic ion exchangers could be widely classified under the following categories.
i) Hydrous oxides of polyvalent metals.
ii) Insoluble acidic salts of polyvalent metals.
iii) Salts of heteropolyacids.
iv) Insoluble ferrocyanides.
v) Synthetic aluminosilicates.
vi) Miscellaneous inorganic ion exchanger's example for., synthetic apatites, ends sulphides.