反应条件
in water Electrolysis; special apparatus with Pt wire net covered with PbO2 as anode and current intensity of 12 - 15A; 24h;; evapn. of anode soln. in vac. at 40 - 60°C not to dryness, addn. of some HNO3, further evapn.; crystn.; decantation of mother lye; dissolving H5IO6 in hot concd. HNO3 soln., filtration, recrystn., heating in desiccator over KOH to 40°C;;
