[en] The conditions have been found for producing dense amorphous phosphates of zirconium, titanium, cerium, and crystalline acid orthophosphates of zirconium from different acidocompounds of these elements and orthophosphoric acid. Thermal stability of synthesized phosphates has been studied within a temperature range 20-1200 deg C. An effect has been established of the initial compound on their dispersity, structure and ion-exchange properties. Infrared absorption spectra of phosphates have been studied in a range 400-4000 cm^-1. It has been shown that the method of heterophase reactions makes it possible to reduce considerably the duration of synthesis of the phosphates and consumption of the reagents