METHOD OF PREPARING THIN-LAYER FERROCYANIDE SORBENTS Russian patent published in 2001 - IPC

FIELD: sorbents. SUBSTANCE: method includes successive treatment of granulated carrier with solutions of potassium permanganate, potassium ferrocyanide, and optionally a transition metal salt. In the first treatment step, manganese dioxide is precipitated, which is treated with potassium ferrocyanide in presence of acetic acid to be converted into mixed manganese-potassium ferrocyanide useful as high-specificity sorbent for zesium-137. To obtain other thin- layer ferrocyanide sorbents, thin-layer manganese-potassium ferrocyanide is treated with corresponding metal salt solutions. EFFECT: simplified procedure. 2 cl, 1 tbl