Phosphoric Acid → Zirconium phosphate

Participants

Reaction Conditions

Reaction Steps

Zirconium sulfate (0.12 mol), ammonium sulfate (0.04 mol), phosphoric acid (0.18 mol) and sodium hydroxide (0.018 mol) under mixing were added to pure water (40 g) to prepare a homogeneous aqueous solution. This reaction mixture was heated for 4 hours under saturated water vapor pressure at 120° C., and the precipitate was subjected to filtration, washing with water and drying to obtain a zirconium phosphate salt having a network structure. This was added to an aqueous silver nitrate solution containing a given amount of silver ion and stirred at 60° C. for 10 hours. Then, the slurry was filtrated, and the residue was sufficiently washed with pure water, heated and dried at 110° C. overnight and fired at 900° C. for 4 hours to obtain a microbicide having the following composition (Sample No. 11).

Provenance & Evidence