| abstract |
A porous ion exchanger which has a continuous pore structure comprising interconnected macropores and, formed in the walls of the macropores, mesopores having an average diameter of 1 to 1000 νm, has a total pore volume of 1 to 50 ml/g, has ion exchange groups being uniformly distributed, and has an ion exchange capacity of 0.5 mg equivalents/g-dry porous exchanger or more. The porous ion exchanger is capable of being used as the ion exchanger to be packed in a deionizing module of an electric type deionized water production apparatus, a solid acid catalyst, an adsorbent and a packing material for a chromatograph. |