Zirconium phosphate and method of making same

A method of making an amorphous zirconium phosphate compound comprising mixing a water insoluble zirconium compounds, an aqueous solution of an acidic phosphorous containing reagent and an aqueous solution of an acidic sulfate containing reagent in a molar ratio of said acidic phosphorous containing reagent and said acidic sulfate containing reagent of 0.25-2.0:1 to produce a reaction mixture having a phosphorous to zirconium ratio of from about 2.0-2.5:1, and reacting said mixture at a temperature and time effective to produce said amorphous zirconium phosphate compound.

A method of making an amorphous zirconium phosphate compound comprising forming an acidic phosphorous and sulfate containing reagent from a phosphorous containing component selected from the group consisting of phosphoric acid, a mono-hydrogen phosphate of an alkali metal, a mono-hydrogen phosphate of ammonia and mixtures thereof, and a sulfate containing component selected from the group consisting of sulfuric acid, a sulfate of an alkali metal, a sulfate of ammonia and mixtures thereof, mixing a water insoluble zirconium compound with an aqueous solution of said acidic phosphorous and sulfate containing reagent comprising phosuhoric acid and sulfuric acid in a molar ratio of 0.25-2.0:1 to produce a reaction mixture having a phosphorous to zirconium ratio of from about 2.0-2.5:1 and reacting said mixture at a temperature and time effective to produce said amorphous zirconium phosphate compound.

An amorphous zirconium phosphate compound having an H-form that exhibits a peak at −13.7±0.5 ppm in the 31P NMR spectra.

An amorphous zirconium phosphate compound having the formula Zr(HPO4)2 .nMexO.mH2O, wherein n=0-1.2, m=0.5-3.0, x 0.5-1 and Me is selected from the group consisting of NH4, Li, Na, K, Cs, Mg, Ca, Sr and Ba which exhibits an affinity for Co+2 ions characterized by Kd≧500 mL/g at LOD 18%, based on a simulant solution of 0.5 M NaNO3+0.00 1 M Co(NO3)2+0.001 M Ni(NO3)2.

An amorphous zirconium phosphate compound having the formula Zr(HPO4)2 .nMexO.mH2O, wherein n=0-1.2, m=0.5-3.0, x=0.5-1 and Me is selected from the group consisting of NH4, Li, Na, K, Cs, Mg, Ca, Sr and Ba which exhibits an affinity for Ni+2 ions characterized by Kd≧400 mL/g at LOD 18%, based on a simulant solution of 0.5 M NaNO3+0.00 1 M Co(NO3)2+0.001 M Ni(NO3)2.