SYNTHESIS AND CHARACTERIZATION OF A NOVEL LAYERED TITANIUM PHOSPHATE

A novel metastable layered titanium phosphate has been synthesized by the treatment of layered titanates (Na2Ti3O7 and Na4Ti9O20) with 1-2 M phosphoric acid solution at 120-150 degrees C. Based on the data of P -31 MAS NMR and IR spectroscopy, x-ray powder diffraction, and thermal and elemental analysis, the formula Ti2O3(H2PO4)(2) . 2H(2)O was assi gned to the novel compound. The layered nature of the compound was con firmed from n-alkylamine intercalation and the ion exchange behavior t oward alkali, alkaline earth, and some transition metal ions.