abstract |
The synthesized inorganic crystalline ion exchange material comprises a composition having the following general formula (I) in an anhydride form: n n xM₂O·ySiO₂·zM'O, (I) n n wherein M represents Na and/or K; M' represents Ca and/or Mg; y/x is 1.4 to 2.1; z/x is 0.001 to 1.0; K/Na in M₂O is 0 to 8.0; and Mg/Ca in M'O is 0 to 100. n The inorganic ion exchange material of the present invention is excellent in both cationic exchange capacity and anti-solubility, making it useful to be used for a water softener and an alkalinity adjusting agent in detergents. |