METHOD FOR PRODUCING ION-EXCHANGING COMPOSITIONS

摘要

This invention relates to a method of obtaining composite ion exchangers by implanting active inorganic sorbents into a matrix of an organic carrier. The inorganic sorbents are ferrocynides of various metals, hydrated antimony pentoxide, zirconium or titanium phosphates, and natural or synthetic zeolites. The matrix of the composite sorbents is a resin formed from formaldehyde cross-linked sulphonated phenols. Powdered inorganic sorbent is added to the reaction mixture in the process of polycondensation of the matrix. The main advantages of the obtained composite sorbents are improved mechanical stability and the spherical shape of the sorbent beads, decreased solubility of the inorganic component in water, and relatively fast kinetics of the ion exchange process.