Hydrochloric Acid → Phosphoric acid, titanium(4+) salt (4:3)

反応式

Cl.[Ti:2](Cl)(Cl)(Cl)Cl.[P:7]([O-:11])([O-:10])([OH:9])=[O:8].[NH4+].[NH4+]>O>[P:7]([O-:11])([O-:10])([O-:9])=[O:8].[Ti+4:2].[P:7]([O-:11])([O-:10])([O-:9])=[O:8].[P:7]([O-:11])([O-:10])([O-:9])=[O:8].[P:7]([O-:11])([O-:10])([O-:9])=[O:8].[Ti+4:2].[Ti+4:2]

参加物

実験手順

Titanium phosphate was prepared by the following procedure. Hydrochloric acid (500 g) was added to 5 liters of water, and 500 g of titanium tetrachloride was added dropwise at room temperature. After allowing the mixture to stand for 3 hours, a 10% aqueous solution containing 356 g of diammonium hydrogen phosphate was gradually added dropwise to the mixture with thorough stirring. After the formation of a precipitate, the system was allowed to stand at 70° C. for 6 hours. The precipitate was separated by filtration, and washed with water by means of a centrifugal separator until there was no chlorine ion in the filtrate. It was dried at 120° C., and then calcined at 550° C. for 3 hours. The resulting powder had the composition 2TiO2.P2O5 and a surface area, measured by the BET method, of 72 m2 /g.