| 摘要 |
PURPOSE:To obtain crystalline zirconium phosphate having a novel structure and producing a significant effect peculiar to a cation exchanger by bringing a specified liq. mixture contg. a zirconium compound, a carboxylic acid compound and a phosphoric acid compound into a reaction. CONSTITUTION:Crystalline zirconium phosphate represented by the formula (where R is NH4 and/or amine cation, 0<=n<=1, and 0<=m<=2) is obtd. by bringing a liq. mixture into a reaction. The liq. mixture contains a zirconium compound, a carboxylic acid compound and a phosphoric acid compound by amounts in the region defined by straight lines connecting points A (28, 3, 69), B (63, 6, 31), C (44, 43, 13) and D (1, 97, 2) in the triangular component diagram showing the amounts (mol%) of the compounds (expressed in terms of Zr, C2O4 and PO4, respectively) and further contains an ammonium compound and/or an amine compound by 0.2-100mol (expressed in terms of ammonium ions and amine cations, respectively) per 1mol Zr.
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