Phosphoric Acid → Zirconium hydrogen phosphate
Reaktionsgleichung
[OH:1][P:2]([OH:5])([OH:4])=[O:3].S([O-])([O-])(=O)=O.[Zr+4:11].S([O-])([O-])(=O)=O>>[P:2]([O-:5])([O-:4])([OH:3])=[O:1].[Zr+4:11].[P:2]([O-:5])([O-:4])([OH:3])=[O:1]Komponenten
3
Versuchsvorschrift
93 ml of 10.33M H3PO4 are introduced into a reactor fitted with a condenser and a paddle stirrer. The H3PO4 is then brought to the boil (stirring at 300 rev/minute) using an oil bath on a heating plate, in which the temperature is controlled by means of a contact thermometer. At this point, 0.064 mol of zirconium sulphate is introduced. The pasty product becomes pale yellow (over 1/2 h). The temperature is then lowered to 80° C. and the mixture is left for 48 hours. After cooling, the product obtained is recovered and is centrifuged for 25 minutes. The product is washed a first time with hot water (80° C.) and then with cold water until the washing waters have a pH of 4. The product is dried under vacuum for 40 hours.
Aufarbeitung
- customfitted with a condenser and a paddle stirrer