a method of production of sorbents involving acylation of a macroporous styrene - divinylbenzene copolymer in the presence of the friedel - crafts catalyst — aluminum chloride . the acylation reaction is carried out using acetyl chloride in a dichloroethane solvent at boiling the solution . this is followed by phosphorylation of the obtained acylated copolymer with phosphorus trichloride at room temperature ; the product is hydrolyzed with water , washed and dried . the technical result consists in production of a complexing adsorbent highly selective for scandium and simplification of the production process .