METHOD FOR OBTAINING SODIUM-CONTAINING TITANIUM SILICATE

摘要

FIELD: chemistry.SUBSTANCE: acidic titanium-containing solution is taken and reduction of 20-40% of titanium (IV) to titanium (III) by electrochemical processing is realised. Sodium silicon reagent is introduced into titanium-containing solution until molar ratio TiO:SiO=1:3.0-4.5 is provided and sodium hydroxide solution to pH 11.5-12.5 is added. Formed suspension is exposed to air for 2-10 hours. After that, suspension is kept under hermetic conditions at temperature 200-220°C for 100-120 hours with formation of sodium-containing titanium silicon intermediate product. Obtained intermediate product is washed with water and subjected to drying at 80-150°C with obtaining sodium-containing titanosilicate of framework type.EFFECT: increased photocatalytic activity and sorption capacity for caesium, strontium and cobalt cations.4 cl, 5 ex