METHOD FOR PRODUCING ZIRCONIUM AND SODIUM PHOSPHATE SILICATE WITH NASICON STRUCTURE Russian patent published in 2022 - IPC C01B25/30 C01B33/32 C01G25/00 

FIELD: materials obtaining technology.

SUBSTANCE: invention relates to a technology for obtaining materials of the composition Na_1+xZr₂Si_xP_3-xO₁₂, where 0<x<3, having superionic conductivity, which can be used as solid electrolytes in sodium-ion batteries, chemical cleaning, chemical probing and radioactive waste processing. The method for preparing zirconium and sodium phosphate silicates of composition Na_1+xZr₂Si_xP_3–xO₁₂ with the NASICON structure includes successive dissolution of zirconium(IV) acetylacetonate, sodium oleate, tributyl phosphate, tetraethoxysilane, and rosin in ethyl alcohol, distillation of the solvent at a temperature of 80ºC, heat treatment at 500ºC for 30 min and pyrolysis at 1000ºC for 30 min.

EFFECT: reducing the synthesis time, obtaining a wide range of zirconium and sodium phosphate silicates with the NASICON structure with a pure phase composition of the product.

1 cl, 1 tbl, 6 ex