METHOD OF PRODUCING SODIUM-CONTAINING TITANOSILICATE SORBENT Russian patent published in 2019 - IPC B01J20/30 B01J20/10 B01J20/02 G21F9/12 

FIELD: chemistry.

SUBSTANCE: invention relates to technology of titanosilicate sorbents for purification of liquid effluents from radionuclides and toxic inorganic substances. Into a titanium-containing solution with concentration of 45–70 g/l TO₂ silane reagent and sodium hydroxide are added to obtain a suspension. Suspension is held in sealed conditions at high temperature to form sodium-containing titanosilicate semi-product, which is separated by filtration. Then, the intermediate product is subjected to water treatment at weight ratio of solid and liquid phases equal to 1:0.25–1.5, to obtain pulp. Pulp is stirred during 0.5–1.5 hours and filtered till moisture content of sodium-containing titanosilicate precipitate is 20–50 wt%. Sediment is granulated by extrusion and subjected to drying.

EFFECT: method enables to obtain a monophase granular sodium-containing titanosilicate sorbent which has more developed surface and higher sorption capacity.

3 cl, 5 ex