METHOD OF PRODUCING SELECTIVE SORBENT Russian patent published in 2016 - IPC B01J20/30 B01J20/20 C02F1/28 

FIELD: chemistry.

SUBSTANCE: invention relates to production of sorbents. Chemical treatment is performed of milled raw material chosen from peach, and/or apricot, and/or plum stones, of following granulometric composition (in %): below 0.35 mm 10; 0.36 to 0.55 m 55; 0.56 to 0.75 mm 25; 0.76 to 1.25 mm 10. First, material is processed with mixture of following solutions: 0.5 % NH₄OH, 0.5 % NaOH, 0.5 % sodium EDTA, taken in ratio 1:1:1, treatment is performed in autoclave at hydro-modulus 1:8, temperature of 140-150 C, and treatment time 4-5 hours. Then solid phase is washed with desalted water, followed by treatment with mixture of following solutions: 0.5 % FeCl₃, 0.5 % NaClO₄, 0.5 % CH₃COOH, taken at ratio of 1:1:1, treatment is performed at pH 1.0-3.0 in autoclave under isothermal conditions during 4-6 hours, temperature of 140-150 C, and hydro-modulus 1:10.

EFFECT: invention enables obtaining sorption material with wide spectrum of action, which can be used for cleaning fluids of complex chemical and radiochemical composition impurities.

1 cl, 6 tbl, 4 ex