NMR spectroscopy studies of the compound composition and structure in sodiumaluminophosphate glassically formative systems used in technology of liquid radioactive waste solidification

Results on study of liquid and solid phases of Na2O-Al2O3-P2O5 glassically formating system, applied in the technology for liquid radioactive wastes solidification, obtained using the 31P, 27Al and 23Na NMR spectroscopy are presented. Regularities of formation of orthophosphoric acid anions, hydrated ions Al+3 and Na+ as well as aluminophosphate complexes with composition AL:P=1:3 in the mixture of water solutions of orthophosphoric acid, sodium and aluminium nitrates, (NaP3O10)4- and Na11P3O13 compounds in glass-like matrix depending on component concentrations in liquid and solid phases of glassically formating system are established