METHOD OF PRODUCING COMPLEX SORBENT Russian patent published in 2011 - IPC B01J20/10 B01J20/16 B01J20/30 

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing adsorptive materials. Opal-cristobalite rock from the Zikeevsk deposit and tripoli undergo hydrolysis in hot alkaline solution containing K₃[Al(OH)₆]. After hydrolysis, the suspension mixture is put into a sealed reactor and held at temperature 150°C for 5 hours, diluted with water, treated with sulphuric acid solution and dried.

EFFECT: high sorption capacity, improved ion-exchange properties, selectivity with respect to calcium and magnesium salts, heavy metal cations (Cd, Cu, Zn, Co), as well as ¹³⁷Cs radionuclides.

3 cl, 2 dwg, 3 tbl