Ion exchange behavior of the NH4TiOPO4 based exchanger Academic Article uri icon


  • Several compounds of the general formula (NH4)(1-x)HxTiOPO4·nH 2O (x=0.45-0.75) were prepared by acid treatment of ammonium titanyl phosphate (NTP) at elevated temperature (80-90°C). The protonic phases of the NTP were characterized by elemental analysis, TGA, FT-IR, MAS 31P NMR and X-ray diffraction. Their ion exchange behavior towards alkali, alkaline each and some transition metal ions in pure single ion solutions and mixtures was studied. A high capacity and selectivity for potassium and lead makes it promising for certain types of waste treatment and selected analytical separations.

author list (cited authors)

  • Bortun, A. I., Bortun, L. N., & Clearfield, A.

citation count

  • 9

publication date

  • January 1998