METHOD FOR PRODUCING CRYSTALLINE TITANOSILICATE Russian patent published in 2015 - IPC C01G23/00 C01B33/20 

FIELD: chemistry.

SUBSTANCE: initial framework titanosilicate Na₃(Na,H)Ti₂O₂[Si₂O₆]₂·2H₂O is processed with 0.01-0.4 M hydrochloric acid solution for 0.5-2 hours to produce crystalline layered titanosilicate Ti₂(OH)₂[Si₄O₁₀(OH)₂](H₂O)₂. Further, it is modified by processing with 0.001-0.01 M silver nitrate or caesium chloride solution for no more than 24 hours at pH 6-12 while stirring. A titanosilicate solid phase is separated by centrifugation, washed with deionised water at solid:liquid = 1:(3-5) and dried at temperature 70-100°C. Crystalline layered titanosilicate (Me_m,H_4-m)Ti₂O₂[Si₂O₆]₂·nH₂O is produced, wherein Me is silver or caesium, m = 0.1-1.0, n = 0.5-1.8.

EFFECT: invention enables producing intercalated framework caesium and silver titanosilicates having high recoverability and iodine sorption capacity.

4 cl, 5 ex