New Approaches to the Synthesis of Titanium Phosphates from Crystalline Precursors

The possibility to synthesize titanium phosphate from crystalline titanium salts has been shown for the first time. Optimal synthesis conditions have been found to provide preparation of monophase product of composition Ti(HPO 4 ) 2 · H 2 O or TiO(OH)H 2 PO 4 · 2H 2 O by heterogeneous reaction of titanium-containing precursors with phosphoric acid. The process has been found to proceed for 3–5 h at stoichiometric consumption of the components and provides more environmentally benign and profitable conditions as compared with the known methods of synthesis.