Method of making sodium zirconium silico-phosphates
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Homogeneous sodium zirconium silico-phosphates having the formula Na1+x+4y Zr2-y (SiO4)x (PO4)3-xwhere x is from 1 to 2.8 and y is between 0 and about 0.5, are prepared by heating a zirconium phosphate with an aqueous, alkaline sodium silicate solution and calcining the resulting solid orthorhombic crystalline product. The calcined product is useful as a solid electrolyte for transporting sodium ions in a sodium-sulfur storage battery.
Clearfield, Abraham; Jerus, Paul (1985). Method of making sodium zirconium silico-phosphates. United States. Patent and Trademark Office; Texas A&M University. Libraries. Available electronically from