Improved inorganic ion-exchangers

摘要: The possibility of using the sol-gel method for preparation inorganic ion-exchangers with a silica gel matrix has been demonstrated on ammonium molybdophosphate-silica (AMP-SG) system. For ion-exchanger sodium silicate solution, containing AMP and components to cause gelling after increase temperature is poured into hot stirred silicone oil. solution forms droplets, which are filtered off their gelling, washed dried. Beads 65 wt.% per gram dry material have prepared by this tested in ion-exchange columns caesium removal from nitric acid solutions. Caesium may easily be desorbed chloride or nitrate suitable long-time reversible column operation, having not only good chemical, thermal radiation stabilities but also mechanical hydrodynamic properties resistance abrasion. It combines advantage kinetics obtained microparticles precipitated ion-exchanger, low flow large particles.