SYNTHESIS OF ANTIMONIC ACID

摘要

PURPOSE:To produce vitreous antimonic acid, by hydroxylating antimony trioxide under a specific condition and carrying out wet-oxidization of the product in H2O2 to form antimony pentoxide. CONSTITUTION:A reactor furnished with a stirrer and a cooling jacket is charged with 250g of 35% aqueous solution of hydrogen peroxide, 250G of ion-exchange water and 250g of antimony trioxide and the content is thoroughly dispersed by stirring for 60min at 50+ or -20 deg.C. The slurry mixture is cooled, agitated and maintained at 20+ or -2 deg.C for =24hr to effect hydroxylation reaction and obtain a pudding-like solid. The solid is transferred to a closed reactor furnished with a heater and oxidized at 120 deg.C under a gauge pressure of 1kg/cm2 for 24hr. The oxidation product is dried at 100 deg.C for 24hr in a box-type hot-air dryer and pulverized in a mortar to obtain vitreous antimonic acid.