Process for preparing AlH{HD 3{B (PO{HD 4{B ){HD 2{B {19 3H{HD 2{B O

摘要

Crystalline AlH3(PO4)2x3H2O is obtained from an aqueous solution of aluminum phosphate containing a molar ratio of Al2O3:P2O5 of from 1:2 to 1:6 and an organic solvent that is miscible with water. Crystallization is enhanced by the addition of AlH3(PO4)2x3H2O seed crystals to the aqueous solution. The product is useful in reducing the setting time of hydraulic binders.